Variable Displacement Piston Pumps

A3HG Series High Pressure Variable Displacement Piston Pumps A3HG71 A3HG1 A3HG Through Drive A3HG Series High Pressure Variable Displacement Piston Pumps Pump Type Graphic Symbol Geometric Displacement cm 3 /rev 1 2 5 1 2 5 1 2 3 Maximum Operating Pressure MPa Page A3HG Series High Pressure Variable Displacement Piston Pumps Single Pump M O A3HG16 A3HG37 A3HG56 A3HG71 A3HG1 A3HG145 A3HG18 35 156 our control types are available such as pressure compensator type. efer to page 157. 153

Hydraulic luids Hydraulic luids Use clean petroleum base oils equivalent to ISO VG-32 or 46. The recommended viscosity range is from 2 to 4 mm 2 /s and temperature range is from to 6 C, both of which have to be satisfied for the use of the above hydraulic oils. Control of Contamination Due caution must be paid to maintaining control over contamination of the operating oil which can otherwise lead to breakdowns and shorten the life of the unit. Please maintain the degree of contamination within NAS Grade 9. The suction port must be equipped with at least a 1 μm (15 mesh) reservoir type filter and the return line must have a line filter of under 1 μm. Instructions Mounting When installing the pump the filling port should be positioned upwards. Alignment of Shaft Employ a flexible coupling whenever possible, and avoid any stress from bending or thrust. Maximum permissible misalignment is less than.1 mm TI and maximum permissible misangular is less than.2. Suction Pressure Permissible suction pressure at suction port of the pump is between -16.7 and +5 kpa.in case of the speed is over 18 r/min, adjust the pressure to +5 kpa. or piping to the suction port, use the pipes of the same diametre as that of the specified pipe flange to be used. Make sure that the height of the pump suction port is whithin one metre from the oil level in the reservoir. Hints on Piping When using steel pipes for the suction or discharge ports, excessive load from the piping to the pump generates excessive noise. Whenever there is fear of excessive load, please use rubber hoses. Suction Piping In case the pump is installed above the oil level, the suction piping and suction line filter should be located lower than the pump position to prevent air in the suction line. Pilot Piping Install Pilot piping according to the chart. [ecommended Pilot Piping Size] Port /lange Code itting Size Inside Dia. of Pipe E1 M14 1.5 Drain Piping Install drain piping according to the chart and ensure that pressure within the pump housing should be maintained at a normal pressure of less than.1 MPa and surge pressure of less than.5 MPa. Length of piping should be less than 1 m, and the pipe end should be submerged in oil. [ecommended Drain Piping Size] Model A3HG16 A3HG37 A3HG56 A3HG18 Port /lange Code E1 U1 Size M 1.5 7/8-14UN itting U2 G 1/2 J1 1/2 E1 M27 2 U1 1 1/16-12UN U2 J1 3/4 Inside Dia. 12 mm or more 16 mm or more Inside Dia. of Pipe 12 mm or more mm or more Safety Valve When delivery line is blocked suddenly, surge pressure is occurred so a safety valve should be set in the circuit to eliminate any damage on equipment and piping. Bleeding Air It may be necessary to bleed air from pump case and outlet line to remove causes of vibration. Starting Before first starting, fill pump case with clean operating oil via the fill port. In order to avoid air blockage when first starting, adjust the control valves so that the discharged oil from the pump is returned direct to the tank or the actuator moves in a free load. [Volume of Pre-fill Oil equired] Model Volume cm 3 Model Volume cm 3 A3HG16 4 A3HG1 16 U1 1/2-2UN U2 G 1/4 J1 1/4 6 mm or more A3HG37 85 A3HG145 235 A3HG56 15 A3HG18 33 A3HG71 148 154

PISTON PUMPS Setting Discharge Pressure and Delivery At the time of shipment, the unit has been preset to maximum delivery and minimum discharge pressure. Adjust the preset delivery and pressure to meet your system requirements. Adjustment of Discharge Pressure Turning the adjustment screw clockwise, increases pressure. or the volume adjusted by each full turn of the adjustment screw, see below Table. After adjustment, make sure to tighten the lock nut. Volume adjusted by each full turn of the pressure adjustment screw Adjustment of Delivery Turning the flow adjustment screw clockwise, decreases delivery. or the volume adjusted by each full turn of the adjustment screw, see below Table. After adjustment, make sure to tighten the lock nut. The minimum adjustable flow and adjustable volume of each full turn of the delivery adjustment screw A3HG Series Model Numbers A3HG16/A3HG37/A3HG56-1 A3HG71/A3HG1/A3HG145-1 A3HG18-1 Adjustment Volume MPa 5.5 6.3 5.7 Model Numbers A3HG16 A3HG37 Adjustable volume with each full turn of the adjustment screw cm 3 /rev 1.4 3.3 Minimum adjustment flow cm 3 /rev 8 16 A3HG56 4.2 35 A3HG71 4.9 45 A3HG1 6.2 63 A3HG145 9.4 95 A3HG18 1.3 125 low Adjustment Screw Protrusion Length L vs. Geometric Displacement (reference) low Adj. Screw L Lock Nut etainer Cover Geometric Displacement cm 3 /rev 2 18 16 14 12 1 8 6 4 2 5 1 A3HG16 A3HG1 A3HG71 A3HG56 15 2 Adjustment Screw Protrusion Length L A3HG18 A3HG145 A3HG37 mm 155

A3HG Series High Pressure Variable Displacement Piston Pumps Spool Pressure Compensator Valve Pressure Adj. Screw Control Piston low Adj. Screw Pivot Shaft Port Plate Cylinder Block Spring Spring Piston Ass'y Cradle Slipper etainer eatures Conforming to International Standards We have widened the range and now have available pumps not only with JIS mounting but also ISO 3-2 and SAE J744 variants as standard depending on market needs. Both Keyed Shaft and Spline Shaft are available as standard design. Mounting Pipe lange Thread Connecting Port Mounting lange Shaft range/port Code Pipe lange Thread Connecting Port Mounting lange and Shaft E1 Conforms to ISO 3-2 U1 U2 BSPP J1 c Shaft Extension Keyed Spline High Pressure and wide flow range Maintaining the high performance of our A3H pumps, the improved A3HG series now offers a nominal pressure of 31.5 MPa. With a wide flow range, varying from 16.3 cm 3 /rev to 18.7 cm 3 /rev. Supporting a wide range of applications as mid-high load capacity pumps. Through-drive System Adopted as A Standard eature The through-drive system adopted as a standard feature allows connecting a pump having the same capacity as the driving pump on the driven side, increasing the maximum flow range. Any pump conforming to international standards can be used on the driven side; replacement in machines can be readily done. Wide Variety of Control Modes our control modes are available to support various functions: pressure compensator type, pilot pressure control type pressure compensator, constant power control type with external pilot and load sensing type. 156

PISTON PUMPS Control Type Control Type Graphic Symbols Performance Characteristics Explanation Page 1 Pressure Compensator Type 7 Pilot Pressure Control Type Pressure Compensator M O PP M O P S D Output low Output low Pressure Pressure When the system pressure increases and comes close to the preset cut-off pressure, the pump flow decreases automatically while maintaining the set pressure as it is. The output flow and full cut-off pressure can be manually adjusted. The pump is used in combination with the pilot relief valve or multistage pressure control valve. By controlling the pilot pressure, the full cut-off pressure can be remote-controlled according to your requirements. 158 177 A3HG Series 9V Constant Power Control Type With External Pilot 14 Load Sensing Type PP PP L P Output low M Pressure S D P C PC M S P D Output low Pressure A flow control valve is not included with the pump. Install the valve separately. This type of control can control the pump input power according to the motor output. When the system pressure increases, the output flow decreases, in correspondence to predetermined shaft input values. This type of control can enable one pump to act as two pumps (low-pressure and large-flow/highpressure and small-flow). Therefore, the motor capacity can be reduced. This type of control provides the remote control of the full cut-off pressure by connecting a remote control relief valve to the pilot port PP. This is an energy-saving type control which maintains the pump flow and load pressure at the absolute minimum necessary level to operate the actuator. This type of control automatically regulates the output flow so that the inlet-outlet differential pressure of the flow control valve at the output side is constant. To do so, the load pressure must be introduced to the load sensing port L of the pump through the external piping. This type of control provides the remote control of the full cut-off pressure by connecting a remote control relief valve to the pilot port PP. 184 1 Availability of Control Type Mark in the table below refers to standard model. Model Numbers Geometric Displacement Control Type cm 3 /rev 1 7 9V 14 A3HG16 16.3 A3HG37 37.1 A3HG56 56.3 A3HG71 7.7 A3HG1 1.5 A3HG145 145.2 A3HG18 18.7 157

Pressure Compensator Type Graphic Symbol M O Specifications Model Numbers Geometric Displacement cm 3 /rev Minimum Adjustment low cm 3 /rev Operating Pressure MPa Shaft Speed ange r/min Approx. Mass kg ated 1 Intermittent Max. 2 Min. lange Mtg. oot Mtg. A3HG16-*1K*-*C-1 16.3 8 36 6 17 21 A3HG37-*1K*-*C-1 35 37.1 16 27 6 26.5 A3HG37-*1K*-*D-1 34 A3HG56-*1K*-*C-1 34.5 43 56.3 35 25 6 A3HG56-*1K*-*D-1 32.5 4 A3HG71-*1K*-E1D-1 45 71 7.7 45 23 6 A3HG71-*1K*-U1D/U2D/J1D-1 41.5 49 A3HG1-*1KK-E1D-1 56.5 81.5 31.5 35 A3HG1-*1KSP-E1D-1 1.5 63 21 6 56 81 A3HG1-*1K*-U1D/U2D/J1D-1 56 83 A3HG145-*1KK-E1D-1 68.5 94.5 A3HG145-*1KSP-E1D-1 145.2 95 18 6 68 94 A3HG145-*1K*-U1D/U2D/J1D-1 68 95.5 A3HG18-*1KK-E1D-1 88 114 A3HG18-*1KSP-E1D-1 18.7 125 18 6 87.5 113.5 A3HG18-*1KK-U1D/U2D/J1D-1 87.5 115 1. Consult Yuken when pump is used over rated pressure because there is a restriction on operating condition. 2. The maximum shaft speeds shown in the above table are at suction pressure kpa. Model Number Designation A3HG16-1 K K -E1 1 D -1 Series Number A3HG16 (16.3 cm 3 /rev) A3HG37 Mounting L: oot Mtg. Direction of otation : Clockwise (Normal) Control Type 1: Pressure Compensator Type Pres. Adj. ange MPa K: 5-35 Shaft Extension Main Pump Mtg. lange Connecting Port / Pipe lange Thread Second Pump Mtg. Number of Pump Mtg. Bolts (37.1 cm 3 /rev) C: 2 Main A3HG56 : lange ( Viewed from K: Pipe Second D: 4 Pump Connecting (56.3 cm Shaft End ) 3 /rev) Keyed Code lange Pump Mtg. Port Mtg. Shaft Thread Mtg. lange A3HG71 (7.7 cm 3 /rev) A3HG1 (1.5 cm 3 /rev) A3HG145 (145.2 cm 3 /rev) A3HG18 (18.7 cm 3 /rev) SP: Splined Shaft E1 ISO ISO U1 SAE SAE U2 SAE BSPP SAE J1 SAE c SAE Design Number C: 2 1 1. SAE type is also available for the second pump mounting when using ISO type for the main pump mounting flange. Consult Yuken for details. D: 4 1 1 1 1 1 1 158 Pressure Compensator Type

PISTON PUMPS Pipe lange Kits Pipe flange mouting surface conforms to SAE J 518, 4 bolt split flange. Pipe flange kits are not available. Contact us for the details. esponse Characteristics Change in Accordance with Circuits and Operating Conditions. Test Circuit and Conditions Circuit Size of High Pressure ubber Hose Model High Pressure ubber Hose A3HG Series SOL High Pressure ubber Hose A3HG16 A3HG37/56/71 3/4B 15 mm 3/4B 2 mm A3HG1/145 1-1/4B 2 mm A3HG18 1-1/4B 25 mm M O Conditions Drive Speed : 15 r/min Hydraulic luid : ISO VG32 Oil Oil Temperature : 4 C [Viscosity 32 mm 2 /s] esult of Measurement Pressure t1 Ps t2 Model esponse Time ms t1 Overshoot Pressure Ps MPa A3HG16 13 14 2.5 A3HG37 95 7 4. t2 31.5 MPa 5 MPa 5 MPa A3HG56 15 9 7.5 A3HG71 8 125 9.5 A3HG1 85 14 11. Time SOL O ON O A3HG145 85 15 12. A3HG18 95 23 16. Pressure Compensator Type 159

Typical Performance Characteristics of Type A3HG16 at Viscosity 32 mm 2 /s [ISO VG32 oils, 4 C] Performance Characteristic Curve Volumetric Efficiency Volumetric Efficiency Volumetric Efficiency Efficiency Overall Efficiency Output low Input Power Output low Input Power Efficiency Overall Efficiency Output low Input Power Pressure Pressure Output low Input Power Efficiency Overall Efficiency Output low Pressure Input Power Output low Input Power Input Power Input Power Input Power Output low Output low The dotted line in the graph indicates less than minimum adjustable flow. Input Power Output low ull Cut-off Power ull Cut-off Power Drain Drain ull Cut-off ull low ull Cut-off Pressure Pressure Noise Level [One metre horizontally away from pump head cover] Noise Level ull low ull Cut-off Pressure Noise Level ull low ull Cut-off Pressure Pressure Noise Level ull low ull Cut-off 16 Pressure Compensator Type

PISTON PUMPS Typical Performance Characteristics of Type A3HG37 at Viscosity 32 mm 2 /s [ISO VG32 oils, 4 C] Performance Characteristic Curve Efficiency Volumetric Efficiency Volumetric Efficiency Volumetric Efficiency Overall Efficiency Overall Efficiency Overall Efficiency Output low Input Power Output low Input Power Efficiency Output low Input Power Pressure Pressure Output low Input Power Efficiency Output low Pressure Input Power Output low Input Power A3HG Series Input Power Input Power Output low Output low Output low Input Power The dotted line in the graph indicates less than minimum adjustable flow. Input Power ull Cut-off Power ull Cut-off Power Drain Drain ull Cut-off ull low Pressure ull Cut-off Pressure Noise Level [One metre horizontally away from pump head cover] Noise Level ull low ull Cut-off Pressure Noise Level ull low ull Cut-off Pressure Noise Level ull low ull Cut-off Pressure Pressure Compensator Type 161

Typical Performance Characteristics of Type A3HG56 at Viscosity 32 mm 2 /s [ISO VG32 oils, 4 C] Performance Characteristic Curve Volumetric Efficiency Volumetric Efficiency Volumetric Efficiency Efficiency Overall Efficiency Output low Input Power Output low Input Power Efficiency Overall Efficiency Output low Input Power Pressure Pressure Output low Input Power Efficiency Overall Efficiency Output low Pressure Input Power Output low Input Power Input Power Input Power Output low Input Power Output low Input Power Output low The dotted line in the graph indicates less than minimum adjustable flow. ull Cut-off Power Drain ull Cut-off Power Drain ull Cut-off ull low ull Cut-off Pressure Pressure Noise Level [One metre horizontally away from pump head cover] Noise Level ull low ull Cut-off Noise Level ull low ull Cut-off Pressure Pressure Pressure Noise Level ull low ull Cut-off 162 Pressure Compensator Type

PISTON PUMPS Typical Performance Characteristics of Type A3HG71 at Viscosity 32 mm 2 /s [ISO VG32 oils, 4 C] Performance Characteristic Curve Efficiency Volumetric Efficiency Volumetric Efficiency Overall Efficiency Overall Efficiency Output low Output low Input Power Output low Input Power Efficiency Input Power Pressure Pressure Output low Input Power Efficiency Volumetric Efficiency Overall Efficiency Output low Input Power Pressure Output low Input Power A3HG Series Input Power Input Power Output low Input Power Output low The dotted line in the graph indicates less than minimum adjustable flow. Input Power Output low ull Cut-off Power ull Cut-off Power ull Cut-off Pressure Noise Level [One metre horizontally away from pump head cover] Drain Drain ull Cut-off ull low Pressure Noise Level ull low ull Cut-off Noise Level ull low ull Cut-off Pressure Pressure Pressure Noise Level ull low ull Cut-off Pressure Compensator Type 163

Typical Performance Characteristics of Type A3HG1 at Viscosity 32 mm 2 /s [ISO VG32 oils, 4 C] Performance Characteristic Curve Volumetric Efficiency Volumetric Efficiency Volumetric Efficiency Efficiency Overall Efficiency Output low Pressure Input Power Output low Input Power Efficiency Overall Efficiency Output low Input Power Pressure Output low Input Power Efficiency Overall Efficiency Output low Input Power Pressure Output low Input Power Input Power Input Power Output low Input Power Output low The dotted line in the graph indicates less than minimum adjustable flow. Input Power Output low ull Cut-off Power ull Cut-off Power Drain Drain ull Cut-off ull low ull Cut-off Pressure Pressure Noise Level [One metre horizontally away from pump head cover] Noise Level ull low ull Cut-off Noise Level ull low ull Cut-off Pressure Pressure Pressure A3HG 164 Series High Pressure Variable Displacement Piston Pumps Pressure Compensator Type Noise Level ull low ull Cut-off

PISTON PUMPS Typical Performance Characteristics of Type A3HG145 at Viscosity 32 mm 2 /s [ISO VG32 oils, 4 C] Performance Characteristic Curve Efficiency Volumetric Efficiency Overall Efficiency Output low Input Power Output low Input Power Efficiency Volumetric Efficiency Overall Efficiency Output low Input Power Output low Input Power A3HG Series Pressure Pressure Input Power Input Power Output low Output low The dotted line in the graph indicates less than minimum adjustable flow. ull Cut-off Power Input Power Drain ull Cut-off Power Drain ull Cut-off ull low ull Cut-off Pressure Noise Level [One metre horizontally away from pump head cover] Pressure Noise Level ull low ull Cut-off Noise Level ull low ull Cut-off Pressure Pressure Pressure Compensator Type 165

Typical Performance Characteristics of Type A3HG18 at Viscosity 32 mm 2 /s [ISO VG32 oils, 4 C] Performance Characteristic Curve Volumetric Efficiency Volumetric Efficiency Efficiency Overall Efficiency Output low Input Power Pressure Output low Input Power Efficiency Overall Efficiency Output low Input Power Pressure Output low Input Power Input Power Input Power Output low The dotted line in the graph indicates less than minimum adjustable flow. Input Power Output low ull Cut-off Power Drain ull Cut-off Power Drain ull Cut-off ull low ull Cut-off Pressure Pressure Noise Level [One metre horizontally away from pump head cover] Noise Level ull low ull Cut-off Noise Level ull low ull Cut-off Pressure Pressure 166 Pressure Compensator Type

PISTON PUMPS lange Mtg.:A3HG16-1KK-E1C/U1C/U2C/J1C A Thd. B Deep Gasket 81.5 Soc. Hd. Cap Screw Dia. illing Port 1 Hex. Head Plug urnished 212.5 ully Extended 23.8 1 5.8 166.5 23 Model Numbers A B C A3HG16-1KK-E1C A3HG16-1KK-U1C A3HG16-1KK-U2C A3HG16-1KK-J1C 46 D 6.4 E K 1 M1 M1.5 36 3/8-16 17 G 1/2 41 M1 M1 G 1/2 G 1/2 41 41 Dia. H J Dia. 79 45 45 95 Dia. Center Hole DIN332-3.15 6.7 15 76.5 61.5 1. Install the pump so that the illing Port is at the top. 11 74.5 79.5 71 D E H J K L N 18 +.8 -.3 2.5 +.8 -.133 8 -.46 6 -.3.5 -.3 21.24 -.16 82.55 -.5 33 +.3 4.76 16.5 -.3 21.24 -.16 82.55 -.5 33 +.3 4.76 16.5 -.3 21.24 -.16 82.55 -.5 33 +.3 4.76 16 N L 13 low Adj. Screw 13 Hex. Pressure Adj. Screw A Thd. B Deep 13 Hex. 81 166.5 Mounting lange 26.2 Conforms to ISO 3-2 Connecting Port BSPP c 52.4 26 Dia. Pipe lange Threads A3HG Series or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG16-1KK-E1C Accessories:A3HG16-1KK-U1C (71) 1 14 9 35 Dia. Max..2 Dia. 2 31 G1/2 Thd. 7/8-14 UN Thd. SAE 3 Hex. Tightening torque : 75-83 N m Bonded Seal 16.5 +.4 2.5 15 23.9 45 +.1 Dia. 3 2. Drain port conforms to ISO 9974-1, metric threads. 3. Adapter port conforms to SAE J 514, O-ing seals. Detail:A3HG16-1KK-U2C (71) 1 17 9 29.5 -.2 Dia. Max. 21 Dia. 4. Drain port conforms to ISO 1179-1, BSPP threads. 4 Accessories:A3HG16-1KK-J1C 31 G1/2 Thd. c1/2 Thd. 3 Hex Tightening torque : 75-83 N m Bonded Seal oot Mtg.:A3HG16-L1KK-E1C/U1C/U2C/J1C 18 Model Numbers M A3HG16-L1KK-E1C 33 7 95 24.5 5 A3HG16-L1KK-U1C/U2C/J1C 12 Dia. Through 24 Dia. Spotface 38 13 75 93 35 M 16 18.5 12 232 or other dimensions, refer to lange Mtg.. Pressure Compensator Type 167

lange Mtg. Two Bolts:A3HG37-1KK-E1C/U1C/U2C/J1C 85 low Adj. Screw 17 Hex. 85 273 247.5 D ully Extended 71.5 E illing Port 1 Hex. Head Plug urnished Pressure Adj. Screw 13 Hex. 16.5 A2 Thd. B2 Deep 8 58.7 3.2 (93.5).5 32 Dia. 9 35 Dia. 9 91 12.5 Model Numbers A1 A2 B1 B2 C Max..2 Dia. 57.2 24 Dia. A1 Thd. B1 Deep 2. Drain port conforms to ISO 9974-1, metric threads. (93.5).5 29.5 -.2 Dia. Max. 21 Dia. 27.8 8 251 1. Install the pump so that the illing Port is at the top. 31 G 1/2 Thd. 31 G1/2 Thd. 13 L H Dia. J K Dia. 93.5 N Thd. P Deep 7/8-14 UN Thd. SAE 3 Hex. Tightening torque : 75-83 N m Bonded Seal oot Mtg. Two Bolts:A3HG37-L1KK-E1C/U1C/U2C/J1C 25 +.9 -.4 +.9 -.294 1 A3HG37-1KK-E1C M12 M1 18 M1.5 52 9 36 -.54 42 M8 8 -.36 14 Conforms to ISO 3-2 +.3 A3HG37-1KK-U1C 7/16-14 2 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 146 1/4- +.3 A3HG37-1KK-U2C M12 M1 18 G 1/2 46 9.7 32 25.4.18 -.18 11.6 -.5 38 2 -.5 16 6.35 146 +.3 A3HG37-1KK-J1C M12 M1 18 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 146 or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG37-1KK-E1C 2 Detail:A3HG37-1KK-U2C 4. Drain port conforms to ISO 1179-1, BSPP threads. 4 D E H J K L N P Accessories:A3HG37-1KK-U1C c1/2 Thd. 16.5 3. Adapter port conforms to SAE J 514, O-ing seals. Accessories:A3HG37-1KK-J1C 3 Hex. Tightening torque : 75-83 N m Bonded Seal +.4 1 15 45 174 Model Numbers +.1 23.9 Dia. A3HG37-L1KK-E1C 44 A3HG37-L1KK-U1C/U2C/J1C 38 S 13.5 12 Dia. 2.5 Mounting lange 3 Connecting Port BSPP c Pipe lange Threads 12 115 235.5 21.5 5 14 Dia. Through Dia. Spotface 16 1 44 121 S 152 24 8 or other dimensions, refer to lange Mtg. Two Bolts. 168 Pressure Compensator Type

PISTON PUMPS lange Mtg. our Bolts:A3HG37-1KK-E1D/U1D/U2D/J1D low Adj. Screw 17 Hex. 85 85 9 12.5 57.2 illing Port 1 Hex. Head Plug urnished 258.5 233 D ully Extended 57 E 4 Dia. H J Dia. 93.5 146 Pressure Adj. Screw 13 Hex. 16.5 P A3HG Series A2 Thd. B2 Deep 183.5 58.7 3.2 32 Dia. Model Numbers A1 A2 B1 B2 C 24 Dia. A1 Thd. B1 Deep 27.8 183.5 1. Install the pump so that the illing Port is at the top. 13 236.5 D E H J K L N P 13.5 154 Mounting lange 32 +.18 +.2 35 +.18 -.8 125 A3HG37-1KK-E1D M12 M1 18 M1.5 6 9 -.63 5 M1 1 -.36 +.3 A3HG37-1KK-U1D 7/16-14 2 G 1/2 56 12.7 31.75 -.5 35.32 -.18 127 -.5 48 7.94 113.2 114.5 Conforms to ISO 3-2 A3HG37-1KK-U2D +.3 M12 M1 18 G 1/2 56 12.7 31.75 5/16-18 -.5 35.32 -.18 127 -.5 48 7.94 114.5 A3HG37-1KK-J1D M12 M1 18 G 1/2 56 12.7 31.75 -.5 35.32 -.18 127 -.5 48 +.3 7.94 114.5 K L Thd. N Deep Connecting Port BSPP c Pipe lange Threads or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG37-1KK-E1D Accessories:A3HG37-1KK-U1D (93.5).5 9 35 Dia. Max..2 Dia. 2 7/8-14 UN Thd. SAE 3 Hex. Tightening torque : 75-83 N m G1/2 Thd. Bonded Seal 31 16.5 +.4 2.5 15 23.9 45 +.1 3 Dia. 2. Drain port conforms to ISO 9974-1, metric threads. Detail:A3HG37-1KK-U2D (93.5).5 9 29.5 -.2 Dia. Max. 21 Dia. 4 4. Drain port conforms to ISO 1179-1, BSPP threads. 3. Adapter port conforms to SAE J 514, O-ing seals. Accessories:A3HG37-1KK-J1D 31 G1/2 Thd. c1/2 Thd. 3 Hex. Tightening torque : 75-83 N m Bonded Seal oot Mtg. our Bolts:A3HG37-L1KK-E1D/U1D/U2D/J1D 27.5 15 Model Numbers A3HG37-L1KK-E1D 65 A3HG37-L1KK-U1D/U2D/J1D 61 23 3 14 Dia. Through Dia. Spotface 16 1 27 123 158 23 278 or other dimensions, refer to lange Mtg. our Bolts. Pressure Compensator Type 169

lange Mtg. Two Bolts:A3HG56-1KK-E1C/U1C/U2C/J1C 91 85 low Adj. Screw 17 Hex. 85 3 271 ully Extended 78.5 illing Port 1 Hex. Head Plug urnished D E Pressure Adj. Screw 13 Hex. X 14.5 57.2 H Dia. J K Dia. 16.5 1 A2 Thd. B2 Deep 3 69.9 35.7 38 Dia. 12 Model Numbers A1 A2 B1 B2 C 26 Dia. A1 Thd. B1 Deep 4Places 1. Install the pump so that the illing Port is at the top. D E H J K L N P 25 +.9 -.4 +.9 -.294 1 A3HG56-1KK-E1C M12 M12 M272 52 9 36 -.54 42 M8 8 -.36 +.3 A3HG56-1KK-U1C 7/16-1/2-14 13 2 21 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 1/4- +.3 A3HG56-1KK-U2C M12 M12 46 9.7 32 25.4.18 -.18 11.6 -.5 38 2 -.5 16 6.35 14 146 146 A3HG56-1KK-J1C M12 M12 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 +.3 146 27.8 3 278 13 L N Thd. P Deep 174 Mounting lange Conforms to ISO 3-2 Connecting Port BSPP c 13.5 12 Dia. Pipe lange Threads or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG56-1KK-E1C (16.5) (16.5).5.5 9 5 Dia. 1-1/16-12UN SAE +.1 1529.2 Dia. 9 Max. 27.2 Dia. 2 2. Drain port conforms to ISO 9974-1, metric threads. Detail:A3HG56-1KK-U2C 35.5 -.2 Dia. Max. 26.5 Dia. 4 4. Drain port conforms to ISO 1179-1, BSPP threads. 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 oot Mtg. Two Bolts:A3HG56-L1KK-E1C/U1C/U2C/J1C 12 115 255.5 Accessories:A3HG56-1KK-U1C +.4 3.3 3. Adapter port conforms to SAE J 514, O-ing seals. Accessories:A3HG56-1KK-J1C 5 c3/4 Thd. 14 Dia. Through Dia. Spotface 45 3 Model Numbers A3HG56-L1KK-E1C 44 A3HG56-L1KK-U1C/U2C/J1C 38 S 16 1 44 121 S 21.5 152 24 8 or other dimensions, refer to lange Mtg. Two Bolts. 17 Pressure Compensator Type

PISTON PUMPS lange Mtg. our Bolts:A3HG56-1KK-E1D/U1D/U2D/J1D 91 85 low Adj. Screw 17 Hex. 85 14.5 57.2 275 246 ully Extended illing Port 1 Hex. Head Plug urnished 53.5 D E 4 Dia. H J Dia. 16.5 146 Pressure Adj. Screw 13 Hex. P A3HG Series 69.9 A2 Thd. B2 Deep 35.7 8 12 38 Dia. Model Numbers A1 A2 B1 B2 C A3HG56-1KK-E1D A3HG56-1KK-U1D A3HG56-1KK-U2D A3HG56-1KK-J1D (16.5) (16.5).5.5 M12 7/16-14 M12 M12 M12 1/2-13 9 5 Dia. 9 M12 M12 2 21 26 Dia. A1 Thd. B1 Deep Max. 27.2 Dia. M272 27.8 8 253 1. Install the pump so that the illing Port is at the top. 6 56 56 56 13 D E H J K L N P 9 12.7 12.7 12.7 2. Drain port conforms to ISO 9974-1, metric threads. Max. 26.5 Dia. K 32 +.18 +.2 35 +.18 -.8 125 -.63 31.75 -.5 31.75 -.5 31.75 -.5 35.32 -.18 35.32 -.18 127 35.32 -.18 127 127 -.5 33 -.5 -.5 5 48 48 48 L Thd. N Deep M1 5/16-18 1-1/16-12UN SAE 1 -.36 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 13.5 154 Mounting lange +.3 7.94 +.3 7.94 +.3 7.94 113.2 114.5 114.5 114.5 Conforms to ISO 3-2 or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG56-1KK-E1D 2 Detail:A3HG56-1KK-U2D 35.5 -.2 Dia. 4 4. Drain port conforms to ISO 1179-1, BSPP threads. Accessories:A3HG56-1KK-U1D +.4 3.3 3. Adapter port conforms to SAE J 514, O-ing seals. Accessories:A3HG56-1KK-J1D oot Mtg. our Bolts:A3HG56-L1KK-E1D/U1D/U2D/J1D c3/4 Thd. +.1 1529.2 Dia. 45 3 Connecting Port BSPP c Pipe lange Threads 29.5 Model Numbers A3HG56-L1KK-E1D 65 A3HG56-L1KK-U1D/U2D/J1D 61 15 3 14 Dia. Through Dia. Spotface 16 1 27 123 23 158 23 278 or other dimensions, refer to lange Mtg. our Bolts. Pressure Compensator Type 171

f lange Mtg.:A3HG71-1KK-E1D/U1D/U2D/J1D 12 low Adj. Screw 17 Hex. 12 296.5 27 ully Extended 61 illing Port 1 Hex. Head Plug urnished D E 4 Pressure Adj. Screw 13 Hex. X A Thd. B Deep 3.5 Model Numbers A B C A3HG71-1KK-E1D M12 A3HG71-1KK-U1D 1/2-13 21 A3HG71-1KK-U2D A3HG71-1KK-J1D 77.8 42.9 M12 M12 15.5 114 51 Dia. M272 D E H J K L N P S 6 56 56 56 9 12.7 12.7 12.7 66.7 34 Dia. A Thd. B Deep 32 +.18 +.2 35 +.18 -.8 16 -.63 31.75 -.5 31.75 -.5 31.75 -.5 31.8 3.5 274.5 5 35.32 -.18 127 -.5 48 35.32 -.18 127 -.5 48 35.32 -.18 127 -.5 48 18 M1 5/16-18 K Dia. Case 5 Hex. Soc. 1 -.36 H 1. Install the pump so that the illing Port is at the top. J Dia. L Thd. N Deep 116.5 141.4 18 +.3 7.94 143 114.5 13.5 +.3 7.94 143 114.5 13.5 +.3 7.94 143 114.5 13.5 T 35 U S U Mounting lange 2 Conforms to ISO 3-2 155 155 155 P T Connecting Pipe lange Port Threads BSPP c or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG71-1KK-E1D (116.5).5 9 5 Dia. Max. 27.2 Dia. 2 2. Drain port conforms to ISO 9974-1, metric threads. Detail:A3HG71-1KK-U2D (116.5).5 9 35.5 -.2 Dia. Max. 26.5 Dia. 4 4. Drain port conforms to ISO 1179-1, BSPP threads. oot Mtg.:A3HG71-L1KK-E1D/U1D/U2D/J1D V Accessories:A3HG71-1KK-U1D 1-1/16-12UN SAE 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 3. Adapter port conforms to SAE J 514, O-ing seals. Accessories:A3HG71-1KK-J1D 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 c3/4 Thd. +.4 3.3 Model Numbers V A3HG71-L1KK-E1D 32 A3HG71-L1KK-U1D/U2D/J1D 15 +.1 29.2 45 3 Dia. W X Y Z a b c 21 29 14 15 16 1 45 175 27 123 73 36.5 61 3.5 W c d Dia. Through e Dia. Spotface Model Numbers d A3HG71-L1KK-E1D A3HG71-L1KK-U1D/U2D/J1D 14 e f 43 37 23 g h 32 8 158 j 33 23 k 398 278 3 X a Y Z b g h j k or other dimensions, refer to lange Mtg.. 172 Pressure Compensator Type

PISTON PUMPS lange Mtg.:A3HG1-1KK-E1D/U1D/U2D/J1D A Thd. B Deep 243 Model Numbers A B C A3HG1-1KK-E1D M12 A3HG1-1KK-U1D 1/2-13 21 A3HG1-1KK-U2D A3HG1-1KK-J1D 112.5 88.9 5.8 M12 M12 low Adj. Screw 17 Hex. 112.5 63 Dia. M272 163 118.5 66.7 34 Dia. A Thd. B Deep illing Port 1 27 Hex. Head Plug urnished 3 7 D ully Extended 62.5 E 31.8 243 3 1. Install the pump so that the illing Port is at the top. D E H J K L N P S +.18 +.18 8 9 56 4 +.2 43 -.8 18 -.63 7 M12 62 12.7 45 38.1 -.5 42.36 -.18 152.4 -.5 54 62 12.7 45 38.1 -.5 42.36 -.18 152.4 -.5 54 7/16-14 62 12.7 45 38.1 -.5 42.36 -.18 152.4 -.5 54 L 17.5 Case 5 Hex. Soc. 12 -.43 9.53 H Dia. +.3 J +.3 9.53 9.53 +.3 K Dia. 158.4 161.6 161.6 161.6 129 N Thd. P Deep 21 18 21.5 21.5 21.5 T 35 39 39 39 S Pressure Adj. Screw 13 Hex. 23 21 Mounting lange Conforms to ISO 3-2 Connecting Port BSPP c T Pipe lange Threads A3HG Series or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG1-1KK-E1D (129).5 9 5 Dia. Max. 27.2 Dia. 2. Drain port conforms to ISO 9974-1, metric threads. (129).5 2 Detail:A3HG1-1KK-U2D 9 35.5 -.2 Dia. Max. 26.5 Dia. 4 4. Drain port conforms to ISO 1179-1, BSPP threads. oot Mtg.:A3HG1-L1KK-E1D/U1D/U2D/J1D Accessories:A3HG1-1KK-U1D 1-1/16-12UN SAE 12 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 3. Adapter port conforms to SAE J 514, O-ing seals. Accessories:A3HG1-1KK-J1D 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 c3/4 Thd. +.4 3.3 15 29.2 45 +.1 3 Detail of Adapter Port Dia. 32 Model Numbers U A3HG1-L1KK-E1D 93 A3HG1-L1KK-U1D/U2D/J1D 75 21 373 Dia. Through 43 Dia. Spotface 29 3 14 45 175 U 37 32 8 33 398 or other dimensions, refer to lange Mtg.. Pressure Compensator Type 173

lange Mtg.:A3HG145-1KK-E1D/U1D/U2D/J1D A Thd. B Deep 266.5 123 Model Numbers A B C A3HG145-1KK-E1D M12 A3HG145-1KK-U1D 1/2-13 21 A3HG145-1KK-U2D A3HG145-1KK-J1D (138.5).5 88.9 5.8 M12 M12 low Adj. Screw Hex. 123 63 Dia. 9 5 Dia. M272 172.5 129 66.7 34 Dia. A Thd. B Deep 2. Drain port conforms to ISO 9974-1, metric threads. 321.5 ully Extended 31.8 345.5 266.5 323.5 1. Install the pump so that the "illing Port" is at the top. +.18 +.18 92 9 7 45 +.2 48.5 -.8 18 -.63 82 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 illing Port 1 27 Hex. Head Plug urnished 74 Case 5 Hex. Soc. D E H J K L N P S 3. M16 36 14 -.43 32 +.3 11.11 1/2-13 33 D E L H Dia. J K Dia. 158.4 161.6 32 32 +.3 11.11 +.3 11.11 161.6 161.6 138.5 N Thd. P Deep 21 18 21.5 21.5 21.5 UN SAE 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal T 35 39 39 39 Adapter port conforms to SAE J 514, O-ing seals. S +.4 Pressure Adj. Screw 13 Hex. 26 Mounting lange Conforms to ISO 3-2 or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG145-1KK-E1D Max. 27.2 Dia. 2 Accessories:A3HG145-1KK-U1D 3.3 15 Connecting Port BSPP c +.1 29.2 45 3 T Pipe lange Threads Dia. Detail:A3HG145-1KK-U2D (138.5).5 9 35.5 -.2 Dia. Max. 26.5 Dia. 4 4. Drain port conforms to ISO 1179-1, BSPP threads. Accessories:A3HG145-1KK-J1D 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 c3/4 Thd. oot Mtg.:A3HG145-L1KK-E1D/U1D/U2D/J1D 32 Model Numbers U A3HG145-L1KK-E1D 45 A3HG145-L1KK-U1D/U2D/J1D 14 21 382.5 212 3 Dia. Through 43 Dia. Spotface 246 29 2 35 37 32 235 U or other dimensions, refer to lange Mtg.. 8 33 398 174 Pressure Compensator Type

PISTON PUMPS lange Mtg.:A3HG18-1KK-E1D/U1D/U2D/J1D X Model Numbers A B C A3HG18-1KK-E1D M16 29 A3HG18-1KK-U1D 5/8-11 29 A3HG18-1KK-U2D A3HG18-1KK-J1D 129 16.4 A Thd. B Deep 61.9 297.5 M16 M16 76 Dia. 29 29 low Adj. Screw Hex. 129 138 79.4 44 Dia. A Thd. B Deep 352.5 ully Extended 36.5 384.5 297.5 362.5 1. Install the pump so that the illing Port is at the top. D E H J K L N P S +.18 +.18 M272 92 9 7 45 +.2 48.5 -.8 18 -.63 82 75 75 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 67 67 illing Port 1 27 Hex. Head Plug urnished 86 M16 36 14 -.43 32 +.3 11.11 1/2-13 D E L 24 H Dia. Case 5 Hex. Soc. J 158.4 161.6 32 32 +.3 11.11 11.11+.3 161.6 161.6 K Dia. 148 N Thd. P Deep 18 21.5 21.5 21.5 21 T 35 39 39 39 Pressure Adj. Screw 13 Hex. 27.5 S Connecting Mounting lange Port Conforms to ISO 3-2 BSPP c T Pipe lange Threads A3HG Series or Port/lange Code U1/J1, Adapter and bonded seal are attached. After installing the bonded seal at the drain port tighten the adapter Detail:A3HG18-1KK-E1D Accessories:A3HG18-1KK-U1D (148).5 9 5 Dia. Max. 27.2 Dia. 2 2. Drain port conforms to ISO 9974-1, metric threads. UN SAE 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 3. Adapter port conforms to SAE J 514, O-ing seals. +.4 3.3 15 29.2 45 +.1 3 Dia. Detail:A3HG18-1KK-U2D (148).5 9 35.5 -.2 Dia. Max. 26.5 Dia. 4 4. Drain port conforms to ISO 1179-1, BSPP threads. Accessories:A3HG18-1KK-J1D 36 Hex. Tightening torque : 147-162 N m G3/4 Thd. Bonded Seal 33 c3/4 Thd. oot Mtg.:A3HG18-L1KK-E1D/U1D/U2D/J1D 32 Model Numbers U A3HG18-L1KK-E1D 45 A3HG18-L1KK-U1D/U2D/J1D 14 21 4 212 3 Dia. Through 43 Dia. Spotface 246 29 2 35 235 U or other dimensions, refer to lange Mtg.. 37 32 8 33 398 Pressure Compensator Type 175

Y Y Spear Parts List A3HG*-*1KK X X Accessories Detail of Section X X Detail of Section Y Y List of Seals and Bearings Item Name of Parts 1 Gasket Part Numbers A3HG16 A3HG37 A3HG56 A3HG71 A3HG1 A3HG145 A3HG18 Z15-7- PK31495-1 Z8-71- PK314517-4 Z8-72- PK31456-7 23- PK212657-1 24- PK212655-5 25- PK212635-7 26- PK212656-3 2 Back Up ing 131E-PK41244-1 3 4 Tapered oller Bearing H337J 4T-338 339J 4T-321 H3311 Cylindrical oller Bearing NUP25E 76- PK4159-1 Tapered oller Bearing 4T-335 4T-3325 4T-3325 4T-3326 4T-3326 Needle oller Bearing HMK23V3 76- PK416-9 TCN557812 (KM) KP-C-5 (KM) S13 (KM-7) S8 (KM-7) 5 Oil Seal TCN254511 (KM) 6 Bonded Seal KP-C-4 (KM) 7 O-ing S65 (KM-7) 8 O-ing, Gasket 2- PK413358-3 TCN355511 (KM) KP-C-4 (KM) S85 (KM-7) S8 (KM-7) TCN355511 (KM) KP-C-5 (KM) S95 (KM-7) S8 (KM-7) TCN355511 (KM) KP-C-5 (KM) S1 (KM-7) S8 (KM-7) TCN57212 (KM) KP-C-5 (KM) S11 (KM-7) S8 (KM-7) TCN557812 (KM) KP-C-5 (KM) S125 (KM-7) S8 (KM-7) 9 O-ing SO-B-A139 SO-A-G7 SO-A-G75 SO-A-G8 SO-A-G95 SO-A-G95 SO-A-G15 1 1 O-ing SO-B-P14 SO-B-P18 SO-B-P21 SO-B-P24 SO-B-P24 SO-B-P26 SO-B-P26 1 11 O-ing SO-B-P14 SO-B-P14 SO-B-P14 SO-B-P14 SO-B-P18 SO-B-P18 SO-B-P18 1 12 O-ing SO-B-P6 SO-B-P8 SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P1A SO-B-P1A 1 13 O-ing SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P9 3 14 O-ing SO-B-P7 SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P9 SO-B-P9 15 O-ing SO-A-A18 SO-A-A18 SO-A-A18 SO-A-A21 SO-A-A21 SO-A-A21 SO-A-A21 1 16 O-ing SO-B-P26 SO-B-P26 SO-B-P26 SO-B-P32 SO-B-P32 SO-B-P32 SO-B-P32 1 Attached only to the port/flange U1 or J1. 'ty. 1 1 1 1 1 1 1 SO-B-P7:2 SO-B-P9:1 176 Pressure Compensator Type

PISTON PUMPS A3HG Series high Pressure Variable Displacement Piston Pumps Pilot Pressure Control Type Pressure Compensator Graphic Symbol PP P A3HG Series M O S D Specifications Model Numbers Minimum Geometric Adjustment Displacement low cm 3 /rev cm 3 /rev Operating Pressure Minimum Shaft Speed ange Approx. Mass MPa Adjustment r/min kg Pressure ated 1 Intermittent MPa Max. 2 Min. lange Mtg. oot Mtg. A3HG16-*7*-*C-1 16.3 8 36 6 18.9.9 A3HG37-*7*-*C-1 37 37.1 16 27 6.5 A3HG37-*7*-*D-1 5 36 A3HG56-*7*-*C-1 36.5 45 56.3 35 25 6 A3HG56-*7*-*D-1 34.5 42 A3HG71-*7*-E1D-1 47 73 7.7 45 23 6 A3HG71-*7*-U1D/U2D/J1D-1 43.5 51 A3HG1-*7K-E1D-1 58.5 83.5 31.5 35 A3HG1-*7SP-E1D-1 1.5 63 21 6 58 83 A3HG1-*7*-U1D/U2D/J1D-1 58 85 A3HG145-*7K-E1D-1 6 7.5 96.5 A3HG145-*7SP-E1D-1 145.2 95 18 6 7 96 A3HG145-*7*-U1D/U2D/J1D-1 7 97.5 A3HG18-*7K-E1D-1 9 116 A3HG18-*7SP-E1D-1 18.7 125 18 6 89.5 115.5 A3HG18-*7*-U1D/U2D/J1D-1 89.5 117 1. Consult Yuken when pump is used over rated pressure because there is a restriction on operating condition. 2. The maximum shaft speeds shown in the above table are at suction pressure kpa. Model Number Designation A3HG16-7 K -E1 D -1 Series Number A3HG16 (16.3 cm 3 /rev) A3HG37 Mounting L: oot Mtg. Direction of otation : Clockwise (Normal) Control Type 7: Pilot Pressure Control Type Pressure Compensator Shaft Extension Main Pump Mtg. lange Connecting Port / Pipe lange Thread Second Pump Mtg. Number of Pump Mtg. Bolts (37.1 cm 3 /rev) C: 2 Main A3HG56 : lange ( Viewed from K: Pipe Second D: 4 Pump Connecting (56.3 cm Shaft End ) 3 /rev) Keyed Code lange Pump Mtg. Port Mtg. Shaft Thread Mtg. lange A3HG71 (7.7 cm 3 /rev) A3HG1 (1.5 cm 3 /rev) A3HG145 (145.2 cm 3 /rev) A3HG18 (18.7 cm 3 /rev) SP: Splined Shaft E1 ISO ISO U1 SAE SAE U2 SAE BSPP SAE J1 SAE c SAE Design Number C: 2 1 SAE type is also available for the second pump mounting when using ISO type for the main pump mounting flange. Consult Yuken for details. D: 4 1 1 1 1 1 1 Pilot Pressure Control Type Pressure Compensator 177

Pipe lange Kits Pipe flange mouting surface conforms to SAE J 518, 4 bolt split flange. Pipe flange kits are not available.contact us for the details. Typical Performance Characteristics of Type A3HG71 at Viscosity 32 mm 2 /s[iso VG32 oils,4 C] Pressure vs. Output low Output lowl/min 14 12 1 8 6 4 18 r/min 15 r/min 2 5 1 15 2 25 3 35 PressureMPa ull Cut-off Power 16 ull Cut-off Drain 2 ull Cut-off PowerkW 14 12 1 8 6 4 23 r/min 18 r/min 15 r/min ull Cut-off DrainL/min 15 1 5 23 r/min 18 r/min 15 r/min 2 5 1 15 2 25 3 35 ull Cut-off PressureMPa 5 1 15 2 25 3 35 ull Cut-off PressureMPa 178 Pilot Pressure Pressure Control Compensator Type Pressure Type Compensator

PISTON PUMPS lange Mtg.:A3HG16-7K-E1C/U1C/U2C/J1C A Thd. B Deep Gasket 81 125 Soc. Hd. Cap Screw Plain Washer Dia. 1 212.5 ully Extended 129.5 23.8 5.8 166.5 23 46 1 M14 1.5 illing Port 2 Hex. Head Plug urnished D 6.4 E K 1 Dia. H J Dia. Center Hole DIN332-3.15 6.7 79 1. emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. 45 95 Dia. 71 79.5 11 81 78.5 76.5 61.5 31.5 N L 13 Safety Valve Pressure Adj. Screw 14 Hex. 45 A Thd. B Deep 166.5 26.2 low Adj. Screw 13 Hex. 52.4 129 26 Dia. A3HG Series Model Numbers A B C A3HG16-7K-E1C A3HG16-7K-U1C A3HG16-7K-U2C A3HG16-7K-J1C M1 M 1.5 36 3/8-16 17 G 1/2 41 M1 M1 G 1/2 G 1/2 41 41 D E 18 +.8 -.3.5 -.3.5 -.3.5 -.3 H 2.5 +.8 -.133 8 -.46 21.24 -.16 21.24 -.16 21.24 -.16 J 82.55 -.5 82.55 -.5 82.55 -.5 K L N 33 33 6 -.3 +.3 4.76 +.3 4.76 16 16 33 +.3 4.76 16 Mounting lange Conforms to ISO 3-2 Connecting Port BSPP c Pipe lange Threads or Port/lange Code U1/U2/J1,Adapter and O-ing are attached.after installing the O-ing at the drain port tighten the adapter Detail:A3HG16-7K-E1C Accessories:A3HG16-7K-U1C (125) 13.5 9 26 Dia. Max.14.2 Dia. 3. Pilot port conforms to ISO 9974-1, metric threads. 3 24 1/2-2 UN Thd. SAE #5 24 Hex Tightening torque : 26-29 Nm O-ing 11.5 4. Adapter port conforms to SAE J 514, O-ing seals +.4 2.4 12 14 +.1 Dia. 45 4 Accessories:A3HG16-7K-U2C 24 G 1/4 Thd. 24 Hex Tightening torque : 26-29 Nm O-ing 12.5 9 21 +.2 Dia. Max.13.2 Dia. Accessories:A3HG16-7K-J1C 24 c 1/4 Thd. 24 Hex Tightening torque : 26-29 Nm O-ing 5 5. Adapter port conforms to ISO 1179-1, BSPP threads. is common to that of pressure compensator model. efer to page 167 for the dimensions of. oot Mtg.:A3HG16-L7K-E1C/U1C/U2C/J1C Mounting bracket is common to that of pressure compensator model (except max height dimension). efer to page 167 for the dimensions of mounting bracket. Pilot Pressure Control Type Pressure Compensator 179

lange Mtg. Two Bolts:A3HG37-7K-E1C/U1C/U2C/J1C 1 low Adj. Screw 17 Hex. 85 85 33 273 247.5 ully Extended 162 illing Port 2 Hex. Head Plug urnished D 71.5 E 16.5 Safety Valve Pressure Adj. Screw 14 Hex. A2 Thd. B2 Deep 8 58.7 3.2 32 Dia. 129.5 91 Model Numbers A1 A2 B1 B2 C 133.5 57.2 24 Dia. A1 Thd. B1 Deep 27.8 13 8 251 1. 2. L H Dia. J K Dia. 93.5 N Thd. P Deep 174 emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. Install the pump so that the "illing Port" is at the top. D E H J K L N P 1 Mounting lange 25 +.9 -.4 +.9 -.294 1 A3HG37-7K-E1C M12 M1 18 M1.5 52 9 36 -.54 42 M8 8 -.36 14 Conforms to ISO 3-2 +.3 A3HG37-7K-U1C 7/16-14 2 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 146 1/4- +.3 A3HG37-7K-U2C M12 M1 18 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 2 16 6.35 146 +.3 A3HG37-7K-J1C M12 M1 18 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 146 13.5 Connecting Port BSPP c 12 Dia. Pipe lange Threads lange Mtg. our Bolts:A3HG37-7K-E1D/U1D/U2D/J1D 1 85 33 low Adj. Screw 17 Hex. 85 258.5 233 ully Extended 147.5 57 illing Port 2 Hex. Head Plug urnished D E 4 16.5 Safety Valve Pressure Adj. Screw 14 Hex. 129.5 133.5 57.2 Dia. H J Dia. 93.5 146 P 58.7 9 A2 Thd. B2 Deep 3.2 32 Dia. 183.5 Model Numbers A1 A2 B1 B2 C 24 Dia. A1 Thd. B1 Deep 27.8 183.5 236.5 13 K L Thd. 13.5 N Deep 154 1. emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. D E H J K L N P 32 +.18 +.2 35 +.18 -.8 125 A3HG37-7K-E1D M12 M1 18 M1.5 6 9 -.63 5 M1 1 -.36 113.2 +.3 A3HG37-7K-U1D 7/16-14 2 G 1/2 56 12.7 31.75 -.5 35.32 -.18 127 -.5 48 7.94 114.5 +.3 A3HG37-7K-U2D M12 M1 18 G 1/2 56 12.7 31.75 5/16-18 -.5 35.32 -.18 127 -.5 48 7.94 114.5 A3HG37-7K-J1D M12 M1 18 G 1/2 56 12.7 31.75 -.5 35.32 -.18 127 -.5 48 7.94 +.3 114.5 Mounting lange Conforms to ISO 3-2 is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 168 or 169 for the dimensions of. oot Mtg.:A3HG37-L7K-E1C/U1C/U2C/J1C, A3HG37-L7K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model (except max height dimension). efer to page 168 and 169 for the dimensions of mounting bracket. Connecting Port BSPP c Pipe lange Threads 18 Pilot Pressure Pressure Control Compensator Type Pressure Type Compensator

PISTON PUMPS lange Mtg. Two Bolts:A3HG56-7K-E1C/U1C/U2C/J1C 1 91 85 69.9 A2 Thd. B2 Deep 35.7 3 Model Numbers 36 low Adj. Screw 17 Hex. 85 38 Dia. 14.5 12 144.5 57.2 26 Dia. A1 Thd. B1 Deep 3 271 ully Extended 184.5 78.5 27.8 13 3 278 illing Port 2 Hex. Head Plug urnished D E L H Dia. J K Dia. N Thd. P Deep 16.5 1 174 Safety Valve Pressure Adj. Screw 14 Hex. 13.5 12 Dia. 1. emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. A1 A2 B1 B2 C D E H J K L N P Mounting lange A3HG56-7K-E1C M12 M12 M27 2 52 A3HG56-7K-U1C 7/16-1/2-14 13 2 21 46 A3HG56-7K-U2C M12 M12 46 A3HG56-7K-J1C M12 M12 46 9 36 9.7 32 9.7 32 9.7 32 25 +.9 -.4 +.9 -.294 1 -.54 25.4 -.5.18 -.18 11.6 -.5 25.4 -.5.18 -.18 11.6 -.5 25.4 -.5.18 -.18 11.6 -.5 42 M8 8 -.36 14 +.3 38 16 6.35 1/4-146 +.3 38 2 16 6.35 146 38 16 6.35 +.3 146 Conforms to ISO 3-2 Connecting Port BSPP c Pipe lange Threads A3HG Series lange Mtg. our Bolts:A3HG56-7K-E1D/U1D/U2D/J1D 1 91 85 36 85 low Adj. Screw 17 Hex. 275 246 D ully Extended 159.5 E 53.5 4 illing Port 2 Hex. Head Plug urnished Safety Valve Pressure Adj. Screw 14 Hex. 14.5 144.5 57.2 Dia. H J Dia. 16.5 146 P 69.9 12 K L Thd. N Deep 13.5 27.8 13 8 A2 Thd. 26 Dia. 253 154 B2 Deep 35.7 38 Dia. A1 Thd. B1 Deep 8 1. emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. Model Numbers A1 A2 B1 B2 C D E H J K L N P Mounting lange Connecting Pipe lange Port Threads A3HG56-7K-E1D M12 M12 M27 2 6 9 32 +.18 +.2 35 +.18 -.8 125 -.63 5 M1 1 -.36 113.2 Conforms to ISO 3-2 A3HG56-7K-U1D 7/16-1/2-14 13 2 21 56 12.7 31.75 +.3 -.5 35.32 -.18 127 -.5 48 7.94 114.5 A3HG56-7K-U2D M12 M12 56 12.7 31.75 35.32 -.18 127-.5 48 5/16-18 +.3 -.5 7.94 114.5 BSPP A3HG56-7K-J1D M12 M12 56 12.7 31.75-.5 +.3 35.32 -.18 127-.5 48 7.94 114.5 c is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 17 or 171 for the dimensions of. oot Mtg.:A3HG56-L7K-E1C/U1C/U2C/J1C, A3HG56-L7K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model (except max height dimension). efer to page 17 and 171 for the dimensions of mounting bracket. Pilot Pressure Control Type Pressure Compensator 181

lange Mtg.:A3HG71-7K-E1D/U1D/U2D/J1D 1 low Adj. Screw 17 Hex. 12 12 43.5 296.5 27 ully Extended 176 61 illing Port 2 Hex. Head Plug urnished D E 4 Safety Valve Pressure Adj. Screw 14 Hex. A Thd. B Deep Model Numbers A B C A3HG71-7K-E1D M12 A3HG71-7K-U1D 1/2-13 21 A3HG71-7K-U2D A3HG71-7K-J1D lange Mtg.:A3HG1-7K-E1D/U1D/U2D/J1D 1 77.8 42.9 3.5 M12 M12 low Adj. Screw 17 Hex. 112.5 42.5 112.5 114 152.5 51 Dia. M272 6 56 56 56 148.5 1. emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. D E H J K L N P S 9 12.7 12.7 12.7 66.7 34 Dia. A Thd. B Deep 32 +.18 +.2 35 +.18 -.8 16 -.63 31.75 -.5 31.75 -.5 31.75 -.5 31.8 3.5 274.5 5 35.32 -.18 127 -.5 48 35.32 -.18 127 -.5 48 35.32 -.18 127 -.5 48 18 3 7 ully Extended 188 62.5 M1 1 -.36 +.3 7.94 5/16-18 illing Port 2 27 Hex. Head Plug urnished D E K Dia. H J Dia. L Thd. N Deep Case 5 Hex. Soc. 116.5 141.4 18 35 143 114.5 13.5 7.94+.3 143 114.5 13.5 7.94 +.3 143 114.5 13.5 T S U 2 155 155 155 Mounting lange Conforms to ISO 3-2 Connecting Port BSPP c 23 U P T Pipe lange Threads Safety Valve Pressure Adj. Screw 14 Hex. 163 118.5 154 66.7 L H Dia. J K Dia. 129 21 A Thd. B Deep 243 Model Numbers A3HG1-7K-E1D M12 A3HG1-7K-U1D 1/2-13 21 A3HG1-7K-U2D A3HG1-7K-J1D 88.9 5.8 M12 M12 63 Dia. M272 34 Dia. A Thd. B Deep 8 9 56 62 12.7 45 62 12.7 45 62 12.7 45 31.8 243 3 1. emove the plug(6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. A B C D E H J K L N P S T +.18 +.18 4 +.2 43 -.8 18 -.63 7 38.1 -.5 42.36 -.18 152.4 -.5 54 38.1 -.5 42.36 -.18 152.4 -.5 54 38.1 -.5 42.36 -.18 152.4 -.5 54 M12 7/16-14 12 -.43 Connecting Mounting lange Port Conforms to ISO 3-2 BSPP c is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 172 or 173 for the dimensions of. oot Mtg.:A3HG71-L7K-E1D/U1D/U2D/J1D, A3HG1-L7K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model. efer to page 172 and 173 for the dimensions of mounting bracket. 17.5 Case 5 Hex. Soc. 9.53 N Thd. P Deep +.3 +.3 9.53 9.53 +.3 158.4 18 161.6 21.5 161.6 21.5 161.6 21.5 S 35 39 39 39 21 T Pipe lange Threads 182 Pilot Pressure Pressure Control Compensator Type Pressure Type Compensator

PISTON PUMPS lange Mtg.:A3HG145-7K-E1D/U1D/U2D/J1D 1 low Adj. Screw Hex. 123 46 123 172.5 16.5 66.7 illing Port 2 27 Hex. Head Plug urnished 345.5 321.5 ully Extended 211.5 D 74 E H Dia. J K Dia. 138.5 21 26 Safety Valve Pressure Adj. Screw 14 Hex. A3HG Series 129 L A Thd. B Deep Model Numbers A B C A3HG145-7K-E1D M12 A3HG145-7K-U1D 1/2-13 21 A3HG145-7K-U2D A3HG145-7K-J1D 88.9 266.5 5.8 63 Dia. M12 M12 M272 34 Dia. A Thd. B Deep 31.8 266.5 323.5 D E H J K L N P S +.18 +.18 92 9 7 45+.2 48.5 -.8 18 -.63 82 75 12.7 56 44.45-.5 49.39-.18 152.4 -.5 67 75 12.7 56 44.45-.5 49.39-.18 152.4 -.5 67 75 12.7 56 44.45 49.39 -.18 -.5 152.4 -.5 67 M16 36 14 -.43 32 +.3 11.11 1/2-13 N Thd. S P Deep Case 5 Hex. Soc. 1. emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. 158.4 18 35 161.6 21.5 39 32 +.3 11.11 161.6 21.5 39 32 +.3 11.11 161.6 21.5 39 T Mounting lange Conforms to ISO 3-2 T Connecting Port BSPP c Pipe lange Threads lange Mtg.:A3HG18-7K-E1D/U1D/U2D/J1D 1 low Adj. Screw Hex. 129 129 4 illing Port 2 27 Hex. Head Plug urnished 384.5 352.5 ully Extended 238.5 D 86 E 27.5 Safety Valve Pressure Adj. Screw 14 Hex. A Thd. B Deep 61.9 76 Dia. 297.5 Model Numbers A B C A3HG18-7K-E1D A3HG18-7K-U1D A3HG18-7K-U2D A3HG18-7K-J1D 16.4 M16 29 5/8-11 29 M16 M16 29 29 44 Dia. M272 168.5 138 79.4 36.5 297.5 362.5 A Thd. B Deep 1. emove the plug (6 Hex. Soc.), install piping with refering to the instructions Pilot Piping on page 154. 2. Install the pump so that the "illing Port" is at the top. D E H J K L N P S +.18 +.18 92 9 7 45+.2 48.5 -.8 18 -.63 82 M16 36 75 12.7 56 44.45-.5 49.39-.18 152.4 -.5 67 32 75 12.7 56 44.45-.5 49.39-.18 152.4 -.5 67 1/2-13 32 75 12.7 56 44.45-.5 49.39-.18 152.4 -.5 67 32 24 L H Dia. J 14 -.43 N Thd. P Deep Case 5 Hex. Soc. K Dia. +.3 11.11 +.3 11.11 11.11 +.3 148 21 158.4 18 161.6 21.5 161.6 21.5 161.6 21.5 S T 35 39 39 39 T Connecting Mounting lange Port Conforms to ISO 3-2 BSPP c Pipe lange Threads is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 174 or 175 for the dimensions of. oot Mtg.:A3HG145-L7K-E1D/U1D/U2D/J1D, A3HG18-L7K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model. efer to page 174 and 175 for the dimensions of mounting bracket. Pilot Pressure Control Type Pressure Compensator 183

A3HG Series high Pressure Variable Displacement Piston Pumps Constant Power Control Type With External Pilot Graphic Symbol P P PP PP M S D A3HG37/A3HG56 M S D A3HG71/A3HG1 A3HG145/A3HG18 Specifications Model Numbers Minimum Geometric Adjustment Displacement low cm 3 /rev cm 3 /rev Operating Pressure MPa Minimum Adjustment Pressure Shaft Speed ange r/min ated 1 Intermittent MPa Max. 2 Min. Approx. Mass kg A3HG37-*9V*-*-*C-1 45.5 37.1 16 27 6 37 A3HG37-*9V*-*-*D-1 44.5 A3HG56-*9V*-*-*C-1 45 53.5 56.3 35 25 6 A3HG56-*9V*-*-*D-1 43 5.5 A3HG71-*9V*-*-E1D-1 56 82 7.7 45 23 6 A3HG71-*9V*-*-U1D/U2D/J1D-1 52.5 6 A3HG1-*9V*-K-E1D-1 67.5 92.5 A3HG1-*9V*-SP-E1D-1 1.5 63 31.5 35 5 21 6 67 92 A3HG1-*9V*-*-U1D/U2D/J1D-1 67 94 A3HG145-*9V*-K-E1D-1 83.5.5 A3HG145-*9V*-SP-E1D-1 145.2 95 18 6 83 A3HG145-*9V*-*-U1D/U2D/J1D-1 83 11.5 A3HG18-*9V*-K-E1D-1 11 127 A3HG18-*9V*-SP-E1D-1 18.7 125 18 6 1.5 126.5 A3HG18-*9V*-*-U1D/U2D/J1D-1 1.5 1 1. Consult Yuken when pump is used over rated pressure because there is a restriction on operating condition. 2. The maximum shaft speeds shown in the above table are at suction pressure kpa. lange Mtg. oot Mtg. Model Number Designation A3HG37-9V B -K -E1 D -1 Series Number A3HG37 (37.1 cm 3 /rev) A3HG56 (56.3 cm 3 /rev) A3HG71 (7.7 cm 3 /rev) A3HG1 (1.5 cm 3 /rev) A3HG145 (145.2 cm 3 /rev) A3HG18 (18.7 cm 3 /rev) Mounting : lange Mtg. L: oot Mtg. Direction of otation ( Viewed from Shaft End ) : Clockwise (Normal) Control Type 9V: Constant Power Control Type With External Pilot Input Power Setting B:7.5 kw N:11 kw efer to the table on following page for combination. Shaft Extension K: Keyed Shaft SP: Splined Shaft Main Pump Mtg. lange Connecting Port / Pipe lange Thread Second Pump Mtg. Code Main Pump Mtg. lange Connecting Port Pipe lange Thread Second Pump Mtg. E1 ISO ISO U1 SAE SAE U2 SAE BSPP SAE J1 SAE c SAE Number of Pump Mtg. Bolts SAE type is also available for the second pump mounting when using ISO type for the main pump mounting flange. Consult Yuken for details. C: 2 D: 4 D: 4 Design Number 1 1 1 1 1 1 184 Constant Power Pressure Control Compensator Type With Type External Pilot

PISTON PUMPS Combination of pump series and input power setting Mark " " in the table below refers to available combinations. Model Numbers B: 7.5 C: 11 D: 15 E: 18.5 Input Power Setting kw : A3HG37 A3HG56 A3HG71 A3HG1 A3HG145 A3HG18 G: 3 H: 37 J: 45 K: 55 L: 75 M: 9 N: 11 A3HG Series Pipe lange Kits Pipe flange mouting surface conforms to SAE J 518, 4 bolt split flange. Pipe flange kits are not available.contact us for the details. Typical Performance Characteristics of Type A3HG37/56/71 at Viscosity 32 mm 2 /s [ISO VG32 oils,4 C] A3HG37 Output low L/min 8 7 6 5 4 3 2 1 7.5 kw 11 kw N=1 r/min 15 kw 18.5 kw kw Output low L/min 8 7 6 5 4 3 2 1 7.5 kw 11 kw N=12 r/min N=15 r/min N=18 r/min 8 8 15 kw 18.5 kw kw Output low L/min 7 6 5 4 3 2 7.5 kw 1 11 kw 15 kw 18.5 kw kw Output low L/min 7 6 5 4 3 2 7.5 kw 1 11 kw 15 kw 18.5 kw kw 5 1 15 2 25 3 35 5 1 15 2 25 3 35 5 1 15 2 25 3 35 5 1 15 2 25 3 35 A3HG56 Output low L/min 12 1 8 6 4 2 A3HG71 Output low L/min 14 12 1 8 6 4 2 11 kw 15 kw 18.5 kw N=1 r/min 12 N=12 r/min 12 N=15 r/min 12 N=18 r/min kw 1 1 1 kw 3 kw 8 8 3 kw 8 6 6 37 kw 6 37 kw kw3 kw 37 kw 5 1 15 2 25 3 35 5 1 15 2 25 3 35 Output low L/min 3 kw 37 kw Output low L/min 5 1 15 2 25 3 35 5 1 15 2 25 3 35 5 1 15 2 25 3 35 5 1 15 2 25 3 35 5 1 15 2 25 3 35 N=1 r/min N=12 r/min N=15 r/min N=18 r/min 14 14 14 3 kw 12 12 12 3 kw 37 kw 3 kw 1 3 kw 1 37 kw 1 45 kw 37 kw 37 kw 45 kw 45 kw 8 8 8 45 kw 6 6 6 15 kw 15 kw 15 kw 4 15 kw 4 4 2 18.5 kw 18.5 kw 18.5 kw 18.5 kw 2 2 kw kw kw kw Output low L/min 4 2 11 kw 15 kw 18.5 kw kw Output low L/min 4 11 kw 2 15 kw 18.5 kw Output low L/min Output low L/min 4 11 kw 15 kw 2 18.5 kw 5 1 15 2 25 3 35 1. Pumps are adjusted to the required power before shipment, but in case of oil temperature raise(increase of drain) the input power may exceed the adjusted power. In that case phase re-adjust screw refering to instruction manual. 2. In case of over 18 r/min of shaft speed, the input power may exceed the adjusted power.in that case phase re-adjust screw refering to instruction manual. Constant Power Control Type With External Pilot 185

Typical Performance Characteristics of Type A3HG1/145/18 at Viscosity 32 mm 2 /s [ISO VG32 oils,4 C] A3HG1 2 N=1 r/min 2 N=12 r/min N=15 r/min 2 N=18 r/min 2 Output low L/min 16 12 8 4 18.5 kw kw 3 kw 37 kw 45 kw 55 kw 5 1 15 2 25 3 35 Output low L/min 16 12 8 4 Output low L/min 37 kw 45 kw 55 kw 16 12 8 37 kw 45 kw 55 kw 18.5 kw 18.5 kw 4 kw kw 4 3 kw 3 kw 5 1 15 2 25 3 35 5 1 15 2 25 3 35 Output low L/min 16 12 8 18.5 kw kw 3 kw 37 kw 45 kw 55 kw 5 1 15 2 25 3 35 A3HG145 Output low L/min 24 2 16 12 8 4 N=1 r/min N=12 r/min N=15 r/min N=18 r/min 24 24 24 55 kw 55 kw 55 kw 75 kw 55 kw 2 2 75 kw 2 75 kw 75 kw 9 kw 9 kw 16 16 9 kw 9 kw 16 12 12 12 kw 3 kw 37 kw45 kw 5 1 15 2 25 3 35 Output low L/min 8 4 kw 3 kw 37 kw 45 kw 5 1 15 2 25 3 35 Output low L/min 8 4 kw 3 kw 37 kw 45 kw 5 1 15 2 25 3 35 Output low L/min 8 kw 3 kw 4 37 kw 45 kw 5 1 15 2 25 3 35 A3HG18 Output low L/min 35 3 25 2 15 1 5 N=1 r/min 3 kw 37 kw 45 kw 55 kw 5 1 15 2 25 3 35 Output low L/min 75 kw 9 kw 11 kw 35 3 25 2 15 1 5 3 kw 37 kw 45 kw N=12 r/min N=15 r/min 35 Output low L/min 75 kw 9 kw 11 kw 3 25 2 15 1 5 3 kw 37 kw 45 kw 55 kw 75 kw 9 kw 11 kw 15 1 55 kw 5 1 15 2 25 3 35 5 1 15 2 25 3 35 Output low L/min 35 3 25 2 5 N=18 r/min 75 kw 9 kw 11 kw 3 kw 37 kw 45 kw55 kw 5 1 15 2 25 3 35 1. Pumps are adjusted to the required power before shipment, but in case of oil temperature raise(increase of drain) the input power may exceed the adjusted power. In that case phase re-adjust screw refering to instruction manual. 2. In case of over 18 r/min of shaft speed, the input power may exceed the adjusted power.in that case phase re-adjust screw refering to instruction manual(except the model of A3HG145/A3HG18 ). 186 Constant Power Pressure Control Compensator Type With Type External Pilot

PISTON PUMPS lange Mtg. Two Bolts:A3HG37-9V*-K-E1C/U1C/U2C/J1C 32 Dia. A2 Thd. B2 Deep low Adj. Screw 17 Hex. 1 58.7 3.2 8 68 85 158 Model Numbers A1 A2 B1 B2 C 17.5 136.5 91 27.8 2 Dia. A1 Thd. B1 Deep 273 247.5 ully Extended 143.5 D 71.5 E 57.2 13 167.5 251 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. D E H J K L N P 16.5 Safety Valve Pressure Adj. Screw 14 Hex. Mounting lange Connecting Port 25 +.9 -.4 +.9 -.294 1 A3HG37-9V*-K-E1C M12 M1 18 M1.5 52 9 36 -.54 42 M8 8 -.36 14 Conforms to ISO 3-2 +.3 A3HG37-9V*-K-U1C 7/16-14 2 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 146 1/4- +.3 A3HG37-9V*-K-U2C M12 M1 18 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 2 16 6.35 146 BSPP +.3 A3HG37-9V*-K-J1C M12 M1 18 G 1/2 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 146 c illing Port 2 Hex. Head Plug urnished H Dia. J K Dia. 93.5 1 L N Thd. P Deep Input Power Setting Screw 3 174 13.5 12 Dia. Pipe lange Threads A3HG Series lange Mtg. our Bolts:A3HG37-9V*-K-E1D/U1D/U2D/J1D low Adj. Screw 17 Hex. 1 68 32 Dia. A2 Thd. B2 Deep 58.7 3.2 183.5 85 158 Model Numbers A1 A2 B1 B2 C 17.5 136.5 9 27.8 258.5 233 ully Extended 129 D 57 E illing Port 2 Hex. Head Plug urnished K L Thd. 13.5 57.2 13 N Deep 2 Dia. 153 Input Power Setting Screw 154 236.5 A1 Thd. B1 Deep 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. D E H J K L N P A3HG37-9V*-K-E1D 32 +.18 +.2 35 +.18 -.8 125 M12 M1 18 M1.5 6 9 -.63 5 M1 1 -.36 +.3 A3HG37-9V*-K-U1D 7/16-14 2 G 1/2 56 12.7 31.75 -.5 35.32 -.18 127 -.5 48 7.94 +.3 A3HG37-9V*-K-U2D M12 M1 18 G 1/2 56 12.7 31.75 5/16-18 -.5 35.32 -.18 127 -.5 48 7.94 113.2 114.5 114.5 A3HG37-9V*-K-J1D M12 M1 18 G 1/2 56 12.7 31.75 -.5 35.32 -.18 127 -.5 48 7.94 +.3 114.5 Mounting lange Conforms to ISO 3-2 BSPP c is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 168 or 169 for the dimensions of. oot Mtg.:A3HG37-L9V*-K-E1C/U1C/U2C/J1C, A3HG37-L9V*-K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model (except max height dimension). efer to page 168 and 169 for the dimensions of mounting bracket. 4 Dia. H J Dia. 93.5 146 3 16.5 Connecting Port Safety Valve Pressure Adj. Screw 14 Hex. P Pipe lange Threads Constant Power Control Type With External Pilot 187

lange Mtg. Two Bolts:A3HG56-9V*-K-E1C/U1C/U2C/J1C 1 low Adj. Screw 17 Hex. 91 85 71 158 3 271 D ully Extended 166 E 78.5 illing Port 2 Hex. Head Plug urnished Safety Valve Pressure Adj. Screw 14 Hex. 38 Dia. 69.9 A2 Thd. B2 Deep 35.7 3 Model Numbers A1 A2 B1 B2 C 147.5 181.5 12 27.8 2 Dia. A1 Thd. B1 Deep 57.2 13 2.5 278 L H Dia. J K Dia. N Thd. P Deep 16.5 Input Power Setting Screw 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. D E H J K L N P 1 174 Mounting lange Connecting Port 25 +.9 -.4 +.9 -.294 1 A3HG56-9V*-K-E1C M12 M12 M272 52 9 36 -.54 42 M8 8 -.36 14 Conforms to ISO 3-2 7/16-1/2- +.3 A3HG56-9V*-K-U1C 14 13 2 21 46 9.7 32 25.4 -.5.18 -.18 11.6 -.5 38 16 6.35 146 1/4-.18 -.18 11.6 -.5 +.3 A3HG56-9V*-K-U2C M12 M12 46 9.7 32 25.4 38 2 -.5 16 6.35 146 BSPP A3HG56-9V*-K-J1C M12 M12 46 9.7 32 25.4 -.5.18 +.3 -.18 11.6 -.5 38 16 6.35 146 c 3 13.5 12 Dia. Pipe lange Threads lange Mtg. our Bolts:A3HG56-9V*-K-E1D/U1D/U2D/J1D 1 low Adj. Screw 17 Hex. 91 85 158 71 275 246 D ully Extended 141 E 53.5 4 illing Port 2 Hex. Head Plug urnished Safety Valve Pressure Adj. Screw 14 Hex. 147.5 181.5 27.8 Dia. H J Dia. 16.5 P 146 12 K 13.5 38 Dia. L Thd. 57.2 13 N Deep 2 Dia. 167.5 Input Power Setting Screw 154 253 A2 Thd. B2 Deep A1 Thd. B1 Deep 35.7 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard 8 accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. Connecting Pipe lange Model Numbers A1 A2 B1 B2 C D E H J K L N P Mounting lange Port Threads A3HG56-9V*-K-E1D M12 M12 M272 6 9 32 +.18 +.2 35 +.18 -.8 125 -.63 5 M1 1 -.36 113.2 Conforms to ISO 3-2 7/16-1/2- A3HG56-9V*-K-U1D 14 13 2 21 56 12.7 31.75 +.3 -.5 35.32 -.18 127 -.5 48 7.94 114.5 A3HG56-9V*-K-U2D M12 M12 56 12.7 31.75 -.5 5/16-18 +.3 35.32 -.18 127 -.5 48 7.94 114.5 BSPP A3HG56-9V*-K-J1D M12 M12 56 12.7 31.75 -.5 35.32 -.18 127 -.5 48 7.94 +.3 114.5 c 69.9 is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 17 or 171 for the dimensions of. oot Mtg.:A3HG56-L9V*-K-E1C/U1C/U2C/J1C, A3HG56-L9V*-K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model (except max height dimension). efer to page 17 and 171 for the dimensions of mounting bracket. 3 188 Constant Power Pressure Control Compensator Type With Type External Pilot

PISTON PUMPS lange Mtg.:A3HG71-9V*-K-E1D/U1D/U2D/J1D 1 84 51 Dia. A Thd. B Deep 3.5 12 188 Model Numbers A B C A3HG71-9V*-K-E1D M12 1/2-13 A3HG71-9V*-K-U1D 21 A3HG71-9V*-K-U2D M12 A3HG71-9V*-K-J1D M12 low Adj. Screw 17 Hex. 77.8 42.9 M272 D E H J K L N P S 6 56 56 56 155.5 189.5 9 12.7 12.7 12.7 32 +.18 +.2 35 +.18 -.8 16 -.63 31.75 -.5 31.75 -.5 31.75 -.5 296.5 27 D ully Extended 159 E 61 4 66.7 lange Mtg.:A3HG1-9V*-K-E1D/U1D/U2D/J1D 114 31.8 23 Dia. A Thd. B Deep Case 5 Hex. Soc. 2 18 274.5 K illing Port 2 Hex. Head Plug urnished Dia. H J Dia. L Thd. N Deep 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. T U Mounting lange Connecting Pipe lange Port Threads 5 M1 1 -.36 141.4 18 35 2 Conforms to ISO 3-2 35.32 -.18 127 -.5 48 +.3 7.94 143 114.5 13.5 155 35.32 -.18 127 -.5 48 5/16-18 +.3 7.94 35.32 -.18 127 -.5 48 7.94 +.3 143 114.5 13.5 143 114.5 13.5 155 155 BSPP c 116.5 Input Power Setting Screw B Input Power Setting Screw A 3 S 3 U Safety Valve Pressure Adj. Screw 14 Hex. P T A3HG Series 1 63 Dia. A Thd. B Deep 112.5 8.5 Model Numbers A B C A3HG1-9V*-K-E1D M12 A3HG1-9V*-K-U1D 1/2-13 21 A3HG1-9V*-K-U2D A3HG1-9V*-K-J1D low Adj. Screw 17 Hex. 83 M12 M12 88.9 5.8 243 M272 5 161 118.5 31.8 23 Dia. A Thd. B Deep 3 7 ully Extended 171 D 62.5 E 66.7 17.5 211.5 3 is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 172 or 173 for the dimensions of. oot Mtg.:A3HG71-L9V*-K-E1D/U1D/U2D/J1D, A3HG1-L9V*-K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model (except max height dimension). efer to page 172 and 173 for the dimensions of mounting bracket. L illing Port 2 27 Hex. Head Plug urnished H Dia. J K Dia. N Thd. P Deep 129 Input Power Setting Screw B Input Power Setting Screw A 3 3 S 23 21 Safety Valve Pressure Adj. Screw 14 Hex. T 21 Case 5 Hex. Soc. 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. D E H J K L N P S T Mounting lange Connecting Pipe lange Port Threads +.18 +.18 8 9 +.2 -.8 18 56 4 43 -.63 7 M12 12 -.43 158.4 18 35 Conforms to ISO 3-2 +.3 62 12.7 45 38.1 -.5 42.36 -.18 152.4 -.5 54 9.53 161.6 21.5 39 +.3 62 12.7 45 38.1 -.5 42.36 -.18 152.4 -.5 54 7/16-14 9.53 161.6 21.5 39 BSPP 62 12.7 45 38.1 -.5 42.36 -.18 152.4 -.5 54 9.53 +.3 161.6 21.5 39 c Constant Power Control Type With External Pilot 189

16.4 lange Mtg.:A3HG145-9V*-K-E1D/U1D/U2D/J1D 1 low Adj. Screw Hex. 123 234 86.5 345.5 321.5 ully Extended 4.5 D 74 E Safety Valve Pressure Adj. Screw 14 Hex. N Thd. S T 66.7 32 Dia. P Deep 63 Dia. A Thd. B Deep 2.5 Input Power Setting Screw B 323.5 A Thd. Input Power Setting Screw A B Deep 5.8 Case 15 Hex. Soc. 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard 266.5 accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. Model Numbers A B C D E H J K L N P S T Mounting lange Connecting Pipe lange Port Threads +.18 +.18 A3HG145-9V*-K-E1D M12 M272 92 9 +.2 -.8 18 -.63 7 45 48.5 82 M16 36 14 -.43 158.4 18 35 Conforms to ISO 3-2 A3HG145-9V*-K-U1D 1/2-13 21 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 32 +.3 11.11 161.6 21.5 39 +.3 A3HG145-9V*-K-U2D M12 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 1/2-13 32 11.11 161.6 21.5 39 BSPP A3HG145-9V*-K-J1D M12 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 32 11.11 +.3 161.6 21.5 39 c 88.9 167.5 21.5 129 31.8 L illing Port 2 27 Hex. Head Plug urnished H Dia. J K Dia. 138.5 3 3 26 21 lange Mtg.:A3HG18-9V*-K-E1D/U1D/U2D/J1D 1 low Adj. Screw Hex. 129 243 8.5 384.5 352.5 ully Extended 1.5 D 86 E illing Port2 27 Hex. Head Plug urnished 27.5 Safety Valve Pressure Adj. Screw 14 Hex. 175.5 29.5 138 31.8 N Thd. S T 32 Dia. 66.7 24 P Deep A1 Thd. B1 Deep 253.5 76 Dia. Input Power Setting Screw B 3 362.5 Case Input Power Setting Screw A 3 A2 Thd. 5 Hex. Soc. B2 Deep 61.9 1. emove the plug when using the port (6 Hex. Soc.).Also the pilot port adapter is not standard 297.5 accessory, so it must be ordered separately refering to the on page 179. 2. Install the pump so that the "illing Port" is at the top. 3. Do not touch the screw because it is adjusted at the time of shipment. Model Numbers A1 A2 B1 B2 C D E H J K L N P S T Mounting lange Connecting Pipe lange Port Threads +.18 +.18 A3HG18-9V*-K-E1D M12 M16 29 M272 92 9 +.2 -.8 18 -.63 7 45 48.5 82 M16 36 14 -.43 158.4 18 35 Conforms to ISO 3-2 A3HG18-9V*-K-U1D 1/2-13 5/8-11 +.3 21 29 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 32 11.11 161.6 21.5 39 +.3 A3HG18-9V*-K-U2D M12 M16 29 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 1/2-13 32 11.11 161.6 21.5 39 BSPP A3HG18-9V*-K-J1D M12 M16 29 75 12.7 56 44.45-.5 49.39 -.18 152.4 -.5 67 32 11.11 +.3 161.6 21.5 39 c is common to that of A3HG16-7K-E1C/U1C/U2C/J1C (except the height dimension from the center of the pump). efer to page 179 for the dimensions of. is common to that of pressure compensator model.efer to page 174 or 175 for the dimensions of. oot Mtg.:A3HG145-L9V*-K-E1D/U1D/U2D/J1D, A3HG18-L9V*-K-E1D/U1D/U2D/J1D Mounting bracket is common to that of pressure compensator model (except max. height dimension). efer to page 174 and 175 for the dimensions of mounting bracket. L H Dia. J K Dia. 148 21 Constant Power Pressure Control Compensator Type With Type External Pilot

PISTON PUMPS A3HG Series high Pressure Variable Displacement Piston Pumps Load Sensing Type Graphic Symbol P PP L P C PC M S D A flow control valve is not included with the pump. Install the valve separately. A3HG Series Specifications Model Numbers Operating Pressure 1 Geometric MPa Displacement cm 3 /rev Load Sensing Pres. Difference ΔP MPa Shaft Speed ange r/min ated Intermittent Max. 3 Min. Approx. Mass kg A3HG16-*14*-*C-11 16.3 36 6.5 23.5 A3HG37-*14*-*C-11 37.5 37.1 27 6 29 A3HG37-*14*-*D-11 36.5 A3HG56-*14*-*C-11 37 45.5 56.3 25 6 A3HG56-*14*-*D-11 35 42.5 A3HG71-*14*-E1D-11 47.5 73.5 7.7 23 6 A3HG71-*14*-U1D/U2D/J1D-11 44 51.5 1.5 A3HG1-*14K-E1D-11 2 59 84 31.5 35 (At the time A3HG1-*14SP-E1D-11 1.5 21 6 58.5 83.5 of shipment) A3HG1-*14*-U1D/U2D/J1D-11 58.5 85.5 A3HG145-*14K-E1D-11 71 97 A3HG145-*14SP-E1D-11 145.2 18 6 7.5 96.5 A3HG145-*14*-U1D/U2D/J1D-11 7.5 98 A3HG18-*14K-E1D-11 9.5 116.5 A3HG18-*14SP-E1D-11 18.7 18 6 9 116 A3HG18-*14*-U1D/U2D/J1D-11 9 117.5 1. The operating pressure means pump discharge pressure. 2. Load pressure difference is adjustable in range of 1. -3. MPa 3. The maximum shaft speeds shown in the above table are at suction pressure kpa. Model Number Designation A3HG16-14 K -E1 D -11 Series Number A3HG16 (16.3 cm 3 /rev) A3HG37 Mounting Direction of otation Control Type Shaft Extension Main Pump Mtg. lange Connecting Port / Pipe lange Thread Second Pump Mtg. lange Mtg. Number of Pump Mtg. Bolts (37.1 cm 3 /rev) C: 2 Main A3HG56 : lange ( Viewed from K: Pipe Second D: 4 Pump Connecting (56.3 cm Shaft End ) 3 /rev) Keyed Code lange Pump Mtg. Port Mtg. Shaft Thread Mtg. lange A3HG71 (7.7 cm 3 /rev) A3HG1 (1.5 cm 3 /rev) A3HG145 (145.2 cm 3 /rev) A3HG18 (18.7 cm 3 /rev) L: oot Mtg. : Clockwise (Normal) 14: Load Sensing Type SP: Splined Shaft E1 ISO ISO U1 SAE SAE U2 SAE BSPP SAE J1 SAE c SAE oot Mtg. Design Number C: 2 11 SAE type is also available for the second pump mounting when using ISO type for the main pump mounting flange. Consult Yuken for details. D: 4 11 11 11 11 11 11 Load Sensing Type 1