A Series Variable Displacement Piston Pumps. A16 Type performance characteristics A16 Type Noise level characteristics.

EIC--12- PISTON PUMPS Series Variable Features High efficiency Under the conditions of pressure 16 Kgf/cm² and speed 18 r/min. volumetric efficiency is over 98% and the overall efficiency is over 9%. Low noise level In the 16 pump, the noise level is as low as 57.3dB() [t the full cut-off pressure 21 Kgf/cm² with speed 15 r/min. at one meter horizontally away from pump head cover.] 16 Type performance characteristics 16 Type Noise level characteristics % N=18 r/min. Overall Efficiency 8 32 28 6 24 2 16 12 8 4 9 6 8 12 16 db() 12 3 N=15 r/min. 8 2 21 Kgf/cm² ccomplishment of energy saving Because the overall efficiency is high and the cut-off characteristics is sharp, thus the input power may be saved. Noise Level Volumetric Efficiency 1 Efficiency 7 6 Full Cut-off 5 8 12 16 221 Kgf/cm² Low heat generation Because of small power loss, it is possible to reduce the rise in oil temperature. ccordingly, capacity of a reservoir can be reduced 19

Instructions Hydraulic Fluids. Use petroleum base oil such as anti-wear type hydraulic oils or R & O ( Rust and oxidation inhibitor ) type hydraulic oils (ISO VG 32 or 46) with a viscosity range of 2 to cst at temperature of -6 C both to be satisfied. Control of contamination. Much care should be taken to maintain control over contamination of the operating oil which can otherwise lead to breakdown and shorten the life of the unit. Please maintain the degree of contamination within NS Grade 1. The suction port must be equipped with at least a 1 µm (15mesh) reservoir type filter and the return line must have a line type filter of under 1µm. Mounting When installing the pump the filling port should be positioned upwards. lignment of Shaft. Employ a flexible coupling whenever possible, and avoid any stress from bending thrust. Maximum permissible misalignment is less than.1 mm TIR and maximum permissible misangularity is less than.2. Suction. Permissible suction pressure at inlet port of the pump is between -.17 and +.5 Kgf/cm 2 (-125 mm Hg~+.5 Kgf/cm 2 ). For piping to the suction port, use pipes of the same diameter as that of the specified pipe flange to be used. Make sure that the height of the pump inlet port is within one meter from the oil level in the reservoir. Hints on Piping. When using steel piping for the suction of 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. 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. Drain Piping. Install drain piping according to the chart and ensure that pressure within the pump housing should be maintained at a normal of less than 1 Kgf/ cm 2 and surge pressure of less than 5 Kgf/cm 2. Recommended Drain Piping Size. Fix drain pipe for each side of the pump Model Number Series 1,16,22 37 56,7 9,145 Bleeding ir. It may be necessary to bleed air from pump case and outlet line to remove causes of vibration. n air bleed valve (Model No. ST14- -18) is recommended for this purpose. Starting. Fitting Size 3/8 (Inside dia. 8.5 mm or more) Before starting, first time fill the pump case with clean operating oil through 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 directly to the tank or the actuator moves in a free load. [Volume of Pre-Fill Oil Required] Model Number Series 1/2 (Inside dia. 12 mm or more) 3/4 (Inside dia. 16 mm or more) Volume cm 3 1 37 16,22 6 37, 56 12 7 21 9 25 145 33 Inside Of Pipe ø 1 mm ø 12 mm ø 19 mm 2 Length of piping should be less than 1 m, and the pipe end should be submerged in oil.

Setting Discharge and Delivery t the time of dispatch, the unit has been preset to the maximum delivery and minimum discharge pressure. djust the preset delivery and pressure to meet your system requirements. djustment of Discharge Turning the adjustment screw clockwise, increases pressure. [ adjusted by each one turn of the pressure adjustment screw] Model Numbers djustment Kgf/cm² 1-FR1B 29.6 1-FR1C/H 55.1 16/22/37/56- -R-1-B 35.7 16/22/37/56/- -R-1-C 66.3 16/37/56/- -R-1-H 8.6 7/9/145- -R1B 23.4 7/9/145- -R1C 32.6 7/9/145- -R1H.8 7/9/145- -R1K 47.9 djustment of Delivery Turning the delivery adjustment screw clockwise, decreases delivery. Lock the screw after adjustment. [The minimum adjustable flow and adjustable volume of each full turn of the delivery adjustment screw] Model Numbers djustable Volume with each full turn of the adjustment screw cm³/rev. Minimum adjustable flow cm³/rev. 1 1.1 2 16 1.4 4 22 2 6 37 2.9 1 56 3.9 12 7 4.4 3 9 4.8 56 145 7.2 83 Series Variable 21

Control Type 1 Control Type Compensator Type Graphic Symbols M O Performance Characteristics Explanation 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. Page 24 2 *1 Solenoid-two Control Type PL PH M SOL "OFF" PL SOL "ON" PH This type of control is ideal for an application where the output power of the actuator has to be controlled in two different load pressures while keeping the actuator speed nearly constant. * O 3 *1 Compensator With Unloading Type M O SOL "OFF" SOL "ON" It is suitable for a situation where a long unloading time is required and heat generation and noise have to be kept at their lowest levels. The pump can use in combination with the multistage pressure control valve. * 4 4E Proportional Electro Hydraulic Load Sensing Type Proportional Electro Hydraulic & Flow Control Type i1 M O. M O i2 (S Input Current i 1 L) (S Input Voltage L) (S Input Current i L) (S Input Voltage L) This is an energy saving type control which regulates the pump flow and load pressure to be at absolute minimum necessary level to operate the actuator. Pump flow rate and cut off pressure are controlled proportional to the input current to the control device on the pump and the input current is regulated by the specific amplifier. This type of control has the pressure sensor and tilt angle sensor in the pump. The pump is used with the external amplifier. Flow and pressure can be controlled in proportion to input voltage by only one control valve. The features has been greatly improved by electrical feedback of swash plate tilt angle correspond to flow rate and load pressure to control valve. Linearity of input characteristics is excellent and easy to set. Hysteresis is lower, repeatability and reproducibility are fine 43 53 5 *1 Two- Two-Flow Control Type by System Pres. PH PL M O QH QL PL PH This type of control is suitable for an application like Presses where the changeover from rapid advance to feed is required just when the pressing (pressurizing) starts * 22

6 7 Control Type *1 *1 Two- Two-Flow Control Type by Solenoid valve Pilot Control type Compensator Graphic Symbols PL PH M O M O QH QL Performance Characteristics SOL "OFF" PL SOL "ON" PH Explanation This pump control is suitable for machining found on machine tool, where machining starts after the changeover from rapid advance, to feed has been made. 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 the requirements. Page * * Series Variable 9 *1 Constant Power Control Type M O Pump input power can be controlled in accordance with the motor output. When the discharge pressure raises, the output flow decreases corresponding to the preset input power. The pump can act for function of 2 pumps, low pressure large-flow and high-pressure small-flow. Therefore, the motor capacity can be reduced. * * Control Type 1,"4" & "4E" are shown in catalogue. Contact YUKEN for the details of other control type *1 Please check YUKEN KOGYO.CO.LTD website or catalogue for more details vailability of Control Type Mark O in the table below refers to standard model. Model Numbers Geometric Displacement cm³/rev. Control Type 1 2 3 4 4E 5 6 7 9 1 1. O O 16 15.8 O O O O O O O O O 22 22.2 O O O O O O O 37 36.9 O O O O O O O O O 56 56.2 O O O O O O O O O 7 7. O O O O O O O O 9 91. O O O O O O O 145 145. O O O O O O O O 23

-Single Pump, Compensator Type Graphic Symbol M Specifications Model Numbers Geometric Displacement cm 3 /rev. Minimum dj. Flow cm 3 /rev Operating Kgf/cm² Shaft Speed Range r/min. Rated *2 Intermittent *1 Max. Min. 1-FR1B-12 5.1 1. 2. 16 21 18 6 1-FR1C/H-12 8.5 pprox. Mass Kg. Flange Mtg. 16- -R-1- - -K-32 15.8 4 16 21 18 6 16.5 18.7 22- -R-1- - -K-32 22.2 6 16 16 18 6 16.5 18.7 37- -R-1- - -K-32 36.9 1 16 21 18 6 28. 32.3 56- -R-1- - -K-32 56.2 12 16 21 18 6 35. 39.3 7- R1 S-6 7. 3 25 28 18 6 58.5 7.5 9- R1 S-6 91. 56 25 28 18 6 72.5 93 145- R1 S-6 145. 83 25 28 18 6 92.5 117.5 Foot Mtg. - *1 Whenever setting pressure, make sure the full cut off pressure never exceeds the maximum intermittent pressure. *2 Care should be taken in case of used at a higher pressure than the rated pressure, because operating terms may be restricted. For example, if used as per maximum illustrated operating conditions, intermittent time at maximum flow is restricted to under 1/5 of one cycle time and under 6 seconds simultaneously. Conditions may vary according to the actual working pressure and delivery (inclination angle of swash plate). Consult factory or Yuken sales representative for further information. Max. Output Flow One cycle time 1/5 of one cycle (Max. 6S) Delivery 1 pplicable only for 7/9/145 21 Kgf/cm² (28 Kgf/cm²) 2 Kgf/cm² (27 Kgf/cm²) 1 1 24 Single pump, Compensator Type

Model Number Designation 16 -F -R -1 -B -S -K -32 Series Number Mounting Direction of Rotation Control Type Pres. dj. Range Kgf/cm² Port Position Shaft Extension Design Number 16 (15.8 cm³/rev.) F: Flange 22 (22.2 cm³/rev.) Mounting (Viewed from Shaft End) 1: Compensator B: 12 ~ 7 C: 12 ~ 16 H: 12 ~ 21 B: 12 ~ 7 C: 12 ~ 16 R: L: Clockwise 37 Foot Mounting (Normal) *1 Type (36.9 cm³/rev.) B: 12 ~ 7 56 (56.2 cm³/rev) C: 12 ~ 16 H: 12 ~ 21 None: xial Port S: Side Port K: Keyed Shaft 32 32 32 32 Series Variable 7 -F R 1 B S -6 Series Number 1 (1. cm³/rev.) 7 (7. cm³/rev.) 9 (91. cm³/rev.) 145 (145 cm³/rev.) Mounting F: *2 Flange Mounting F: Flange Mounting L: Foot Mounting Direction of Rotation (Viewed from Shaft End) R: Clockwise (Normal) *1 Control Type 1: Compensator Type Pres. dj. Range Kgf/cm² B: 12 ~ 7 C: 2 ~ 16 H: 2 ~ 21 B: 12 ~ 7 C: 15 ~ 16 H: 18 ~ 214 K: 2 ~ 286 Port Position S: Side Port Design Number ------ 12 *1 vailable to supply pump with anti-clockwise rotation. Consult Yuken for details. *2 When 1 pump is used as the foot mounting, order the mounting bracket kit shown below separately. Ref. to the page 18 for dimensions of the mounting bracket. Note: The mounting bracket-kit consists of Mounting Bracket, 2 hex. Bolts and 2 Plain Washers. Pipe Flange Kits. Mounting Bracket Kit Numbers pprox. Mass Kg. LP-1-1 2.2 Pipe flange kits are available. When ordering, specify kit number from the table below. Pump Model Numbers 16- -R-1 22- -R-1 37- -R-1 56- -R-1 7- R1 9- R1 145- R1 Port Name Pipe Flange Kit Numbers. *1 Threaded Connection Socket Welding Suction F5-6--1 F5-6-B-1 Discharge F5-6--1 F5-6-B-1 Suction F5-1--1 F5-1-B-1 Discharge F5-1--1 F5-1-B-1 Suction F5-12--1 F5-12-B-1 Discharge F5-8--1 F5-8-B-1 Suction F5-16--1 F5-16-B-1 Discharge F5-1--1 F5-1-B-1 *1 Details of pipe flange kits are described in EIC-L-11. 6 6 6 Single pump, Compensator Type 25

Typical Performance Characteristics of Type 1 Oil Viscosity 2cSt [ISO VG 32, 5 o C] Performance Characteristic Curve Efficiency % 1 8 2 Volumetric Efficiency 6 15 1 1 8 6 5 4 2 8 12 16 2 21 Overall Efficiency N=15 r/min. Kgf/cm² 8 7 6 5 4 3 2 1 N=15 r/min. P = Kgf/cm² P = 2 P = 18 P = 16 P = 1 P = 12 P = 1 P = 8 P = 6 P = P = 2 5 1 15 2 Full Cut-off Power Full Cut-off Power 1..8.6.4.2 1-FR1H 18 r/min 1-FR1C 15 r/min 1-FR1B 8 12 16 2 21 Full Cut-off Kgf/cm² Noise Level [One meter horizontally away from pump head cover] Noise Level db () N=15 r/min. 7 6 Full Flow 5 Full Cut-off 8 12 16 2 21 Kgf/cm² Drain 1.5 Full Cut-off 1-FR1H Drain 1..5 18 r/min. 1-FR1B 1-FR1C 15 r/min. Full Flow 15,18 r/min. 8 12 16 2 21 Kgf/cm² 26 Single pump, Compensator Type

Typical Performance Characteristics of Type 16 Oil Viscosity 2cSt [ISO VG 32, 5 o C] Performance Characteristic Curve Efficiency % 1 8 N=15 r/min. Volumetric Efficiency Overall Efficiency 6 24 9 2 16 6 12 8 3 4 8 12 16 2 21 Kgf/cm² Example: t a pressure of 1 Kgf/cm 2, a flow 2 & speed 15 r/min. the axial input becomes about 3.7. as shown the dotted line in the graph 12 1 8 6 4 2 N=15 r/min. P = Kgf/cm² P = 2 P = 18 P = 16 P = 1 P = 12 P = 1 P = 8 P = 6 P = P = 2 P = 7 Series Variable 5 1 15 2 25 3 Full Cut-off Power Full Cut-off Power 1.5 1..5 16- -R-1-B 18 r/min. 16- -R-1-H 8 15 r/min. 12 16 2 Full Cut-off 16- -R-1-C Noise Level [One meter horizontally away from pump head cover] db () Noise Level 8 7 6 5 Full Flow N=15 r/min. Full Cut-off 21 Kgf/cm² 8 12 16 2 21 Kgf/cm² Drain Drain 3 2 1 Full Cut-off Full Flow 18 r/min. 15 r/min. 16- -R-1-B 8 12 16 2 21 16- -R-1-H 16- -R-1-C 15, 18 r/min. Kgf/cm² Single pump, Compensator Type 27

Typical Performance Characteristics of Type 22 Oil Viscosity 2cSt [ISO VG 32, 5 o C] Performance Characteristic Curve % Efficiency 1 8 6 3 2 1 8 12 16Kgf/cm² Full Cut-off Power Full Cut-off Power 1.5 1..5 Volumetric Efficiency Overall Efficiency 22- -R-1-C 18 r/min. 15 r/min. 22- -R-1-B N=15 r/min. 8 12 16 Full Cut-off 12 1 8 6 4 2 Kgf/cm² Example: t a pressure of 1 Kgf/cm 2, a flow 3 & speed 15 r/min. the axial input becomes about 5.4. as shown the dotted line in the graph 1 8 6 4 2 Noise Level [One meter horizontally away from pump head cover] db () Noise Level 8 7 6 N=15 r/min. 1 2 3 Full Flow N=15 r/min. Full Cut-off 5 2 6 8 1 12 1 P = Kgf/cm² P = 1 P = 12 P = 1 P = 8 P = 6 P = P = 2 P = 1 5 Kgf/cm² Drain 7 18 r/min. N=15 r/min. Full Cut-off 22- -R-1-C Drain 6 15 r/min. 5 22- -R-1-B Full Flow 8 12 16 15,18 r/min. Kgf/cm² 28 Single pump, Compensator Type

Typical Performance Characteristics of Type 37 Oil Viscosity 2cSt [ISO VG 32, 5 o C] Performance Characteristic Curve Efficiency % 1 8 6 6 2 Volumetric Efficiency N=15 r/min. Overall Efficiency 3 8 12 16 221Kgf/cm² 2 1 Example: t a pressure of 16 Kgf/cm 2, a flow 45 & speed 15 r/min. the axial input becomes about 12.6. as shown the dotted line in the graph 25 2 15 1 5 N=15 r/min. P = Kgf/cm² P = 2 P = 18 P = 16 P = 1 P = 12 P = 1 P = 8 P = 6 P = P = 2 P = 1 1 2 3 5 6 7 Series Variable Full Cut-off Power Full Cut-off Power 3 2 1 37- -R-1-C 37- -R-1-H N = 18 r/min. N = 15 r/min. 37- -R-1-B 8 12 16 2 21 Kgf/cm² Full Cut-off Noise Level [One meter horizontally away from pump head cover] Noise Level db () 8 7 6 5 Full Flow Full Cut-off N=15 r/min. 8 12 16 2 21 Kgf/cm² Drain 3 Drain 2 1 Full Flow Full Cut-off N = 18 r/min. 37- -R-1-B N = 15 r/min. 37- -R-1-C 37- -R-1-H 15, 18 r/min. 8 12 16 2 21 Kgf/cm² Single pump, Compensator Type 29

Typical Performance Characteristics of Type 56 Oil Viscosity 2cSt [ISO VG 32, 5 o C] Performance Characteristic Curve Efficiency % 1 8 6 1 8 6 2 Volumetric Efficiency 8 12 16 N=15 r/min. Overall Efficiency 2 2 Kgf/cm² Example: t a pressure of 16 Kgf/cm 2, a flow 7 & speed 15 r/min. the axial input becomes about 2.8. as shown the dotted line in the graph 35 3 25 2 15 1 5 N=15 r/min. 2 6 8 1 12 P=2 P=18 P=16 P=1 P=12 P=1 P=8 P=6 P= P=2 P=Kgf/cm² Full Cut-off Power 4 Full Cut-off Power 3 2 1 N=18 r/min. N=15 r/min. 8 12 16 2 21 Kgf/cm² Full Cut-off Noise Level [One meter horizontally away from pump head cover] db() Noise Level 8 7 6 Full Flow Full Cut-Off 5 8 12 16 N=15 r/min. 2 21 Kgf/cm² Drain Drain 4 3 2 Full Cut-Off 1 56- -R-1-B N=15 r/min. 56- -R-1-C 8 12 16 N=18 r/min. 56- -R-1-H Full Flow 15, 18 r/min. 2 21 Kgf/cm² 3 Single pump, Compensator Type

Typical Performance Characteristics of Type 7 Oil Viscosity 32cSt [ISO VG 32, 5 o C] Performance Characteristic Curve Efficiency % 1 8 6 12 1 8 Volumetric Efficiency Overall Efficiency N=15 r/min. 5 1 15 2 6 2 25 Kgf/cm² Example: t a pressure of 2 Kgf/cm 2, a flow 7 & speed 15 r/min. the axial input becomes about 26. as shown the dotted line in the graph N=15 r/min. 6 P=2 5 P=22 P=2 P=18 P=16 P=1 3 P=12 P=1 2 P=8 P=6 P= 1 P=2 P=Kgf/cm² 2 6 8 1 12 Series Variable Full Cut-off Power Full Cut-Off Power 7 6 5 4 3 2 1 Drain 5 1 15 2 25 7 6 5 18 r/min 15 r/min Full Cut-Off Kgf/cm² Noise Level [One meter horizontally away from pump head cover] db() Noise Level 8 7 Full Flow 6 Full Cut-off 5 5 1 15 2 25 N=15 r/min. Kgf/cm² Drain 4 3 2 Full Cut-Off 15, 18 r/min. 1 Full Flow 15, 18 r/min. 5 1 15 2 25 Kgf/cm² Single pump, Compensator Type 31

Typical Performance Characteristics of Type 9 Oil Viscosity 32cSt [ISO VG 32, 5 o C] Performance Characteristic Curve Efficiency % 1 8 6 L/min 1 13 12 Overall Efficiency Volumetric Efficiency 5 1 15 2 Full Cut-off Power Full Cut-off Power 7 6 5 4 3 2 1 18 r/min. N=15 r/min. 15 r/min. 6 2 25 Kgf/cm² 5 1 15 2 25 Kgf/cm² Full Cut-off Example: t a pressure of 18 Kgf/cm 2, a flow 11 & speed 15 r/min. the axial input becomes about 34. as shown the dotted line in the graph Noise Level [One meter horizontally away from pump head cover] Noise Level N=15 r/min. 7 P=25 P=2 P=22 6 P=2 5 P=18 P=16 P=1 3 P=12 P=1 P=8 2 P=6 P= 1 P=2 P=Kgf/cm² 2 6 8 1 12 1 db() 8 7 6 Full Flow N=15 r/min. Full Cut-off 5 5 1 15 2 25 Kgf/cm² Drain 8 6 Drain 4 2 18 r/min. Full Cut-off 15 r/min. Full Flow 5 1 15 2 18 r/min. 15 r/min. 25 Kgf/cm² 32 Single pump, Compensator Type

Typical Performance Characteristics of Type 145 Oil Viscosity 32cSt [ISO VG 32, 5 o C] Performance Characteristic Curve Efficiency % 1 8 6 L/min 1 13 12 Volumetric Efficiency Overall Efficiency N=15 r/min. 5 1 15 2 6 2 25 Kgf/cm² Example: t a pressure of 2 Kgf/cm 2, a flow 18 & speed 15 r/min. the axial input becomes about 64. as shown the dotted line in the graph 1 12 1 8 6 2 8 12 16 N=15 r/min. P=28 P=26 P=2 P=22 P=2 P=18 P=16 P=1 P=12 P=1 P=8 P=6 P= P=2 P=1 P Kgf/cm² 2 2 Series Variable Full Cut-off Power Full Cut-off Power 12.5 1. 7.5 5. 2.5 18 r/min 15 r/min 5 1 15 2 25 Full Cut-off Kgf/cm² Noise Level [One meter horizontally away from pump head cover] db() 9 Noise Level N=15 r/min. 8 Full Flow 7 Full Cut-off 6 5 1 15 2 25 Kgf/cm² Drain 1 Drain 7.5 5 18 r/min. Full Cut-off 15 r/min. 2.5 Full Flow 5 1 15 2 15, 18 r/min. 25 Kgf/cm² Single pump, Compensator Type 33

C 1-FR1-12 H 85 Rc 1/2 dj. Screw 13 Hex. Fully Extended 12 25 25 64.5 64.5 Flow dj. Screw 13 Hex. Dec. 34 Spotface 2 Places 167 13 Discharge Port*2 *3 Rc 1/2 *1 Install the pump so that the Filling Port is at the top. *2 Use either port of two suction and discharge ports at your option. Keep the remaining ports plugged. *3 s the tightening torques of suction, discharge and drain port fittings, conform to the below. 41 Fully Extended 186 156 159.5 131 9.5 52.5 1.5 DIMENSIONS IN MILLIMETRES Filling Port*1 22 Hex. Head. Plug Furnished 44.5 6.5 25 19.5 19.2 21.24 21.8 4.79 Key Width 4.76 *3 Rc 3/8 82.55 82.5 65 X Tightening Torque Kgf-m Model Numbers & Discharge Port Drain Port 1-FR1B/C/H-12 6.5 ~ 7.5 4. - 5. 31 12 1-FR1B-12 93 16 13 View rrow X 25 25 64.5 64.5 156 131 * For other dimensions, refer to above adj. range C & H. 34 Single pump, Compensator Type

16-F-R-1-22-F-R-1- Flow dj. Screw Dec. 17 Hex. Suction Port 19 16 -K-32 -K-32 22.2 65 16 dj. Screw 17 Hex. xial Port Type 47.6 187 19 M1 Thd.x 17 Deep 8 Places Discharge Port 19 62 Lock Nut 17 Hex. Fully Extended 219 44.5 Filling Port* 59 6.5 22 Hex. Head Plug Furnished 26.5 172 PISTON PUMPS 12 25 Rc 3/8 19.5 19.2 X * Install the pump so that the Filling Port is at the top. 16-F-R-1- -S-K-32 22-F-R-1- -S-K-32 Discharge Port 19 Rear Side 19 188 Side Port Type Fully Extended 219 44.5 DIMENSIONS IN MILLIMETRES 78 47.6 19 21.24 21.8 82.55 82.5 96 Series Variable 4.79 Key Width 4.76 12 18 95 R12 16 13 188 View rrow X 74 Foot Mounting type 74 Discharge Port Note : For Foot Mounting Type refer page no. 47. 22.2 M1 Thd. 15.5 x 17 Deep (Both Sides) Single pump, Compensator Type 35

37-F-R-1- -K-32 Flow dj. Dec. Screw 17 Hex. 13 19 Lock Nut 17 Hex. dj. Screw 17 Hex. xial Port Type Fully Extended 247 PISTON PUMPS 77 3 59 9.5 Filling Port * 22 Hex. Head Plug Furnished 32 Rc 1/2 58.7 X 6.38 Key Width 6.35 14 25 22.23 22.2 68 112 25.1 24.85 15 22 3.2 72 32 M1 Thd. x 19 deep 8 Places Discharge Port 32 195 12 11.6 11.55 DIMENSIONS IN MILLIMETRES 12 R14 *Install the pump so that the Filling Port is at the top. 37-F-R-1- -S-K-32 Discharge Port 32 Rear Side 32 22 Side Port Type 146 174 22 View rrow X Fully Extended 247 59 22 58.7 112 36 86 86 Foot Mounting type Discharge Port Note : For Foot Mounting Type refer page no. 48. M1 Thd. x 19 Deep (Both Sides) 3.2 178.5 Single pump, Compensator Type

56-F-R-1- Flow dj. Screw Dec. 17 Hex. -K-32 13 19 dj. Screw 17 Hex. 58.7 236 xial Port Type 138 9 77 Lock Nut 17 Hex. Fully Extended 259.5 Filling Port*1 22 Hex. Head Plug Furnished 62 5.5 43.5 9.5 *2 Rc 3/4 (Both Sides) 31.75 31.7 35.32 35.14 11.6 11.55 Series Variable Suction Port 35 41 49 7.97 Key Width 7.94 DIMENSIONS IN MILLIMETRES 14 * 1 Install the pump so that the Filling Port is at the top. * 2 Use either port of two drain ports at your options. Keep the remaining ports plugged. 12 25 R14 146 174 232 56-F-R-1- -K-32 232 Discharge Port 32 Rear 35 Side Port Type Fully Extended 259.5 62 236 58.7 138 76 3.2 M1 Thd. x 19 deep 8 Places Discharge Port 32 27 12 1 1 Foot Mounting type Delivery Port Note : For Foot Mounting Type refer page no. 49. M1 Thd. x 19 Deep (Both Sides) 3.2 191 Single pump, Compensator Type 37

7-FR1 -S-6 Side Port Type DIMENSIONS IN MILLIMETRES Fully Extended 31.5 62 *2 65 9.5 Rc 3/4 (Both Sides) Discharge Port 27 Spotface (From Rear) 95 95 73 73 7.97 Key 7.94 Width Y 52.4 Discharge Port 26 M1 Thd. x 17 Deep 26.2 246.5 16 31.75 18 19.5 31.7 35.32 35.14 127. 126.95 9 14 14 18 35 Spotface 2 Places (From Rear) 114.4 134 181 211 114.4 18 118 182 X dj. Screw 17 Hex. Eye Bolt M1 Thd. *1 Filling Port 22 Hex. Head Plug Furnished Flow dj. Screw 17 Hex. Dec. View rrow Y 69.9 38 Case 5 Hex. Soc. *3 246.5 35.7 M12 Thd. x 19 Deep View rrow X * 1 Install the pump so that the Filling Port is at the top. * 2 Use either port of two drain ports at your options. Keep the remaining ports plugged. * 3 Case drain port is available for use when draining hydraulic fluid from pump casing. Foot Mounting type Note : For Foot Mounting Type refer page no. 5. 38 Single pump, Compensator Type

9-FR1 Y -S-6 58.7 Discharge Port 32 M1 Thd. x 19 Deep Fully Extended 329 *2 Rc 3/4 119.5 95 23 13 (Both Sides) 3.2 23 27 Side Port Type 22 63 38.1 38.5 Case 5 Hex.Soc. Discharge Port *3 42.36 42.18 152. 152.35 113 161.6 21.5 x Thru. 39 Spotface (From Rear) 15 15 X Flow dj. Screw 17 Hex. Dec. dj. Screw 17 Hex. Eye Bolt M1 Thd. Filling Port*1 27 Hex. Head Plug Furnished DIMENSIONS IN MILLIMETRES 48 77.8 68 68 161.6 9.56 Key 9.53Width R22 19.5 127 Series Variable View rrow Y M12 Thd. x 19 deep 27 42.9 View rrow X * 1 Install the pump so that the Filling Port is at the top. * 2 Use either port of two drain ports at your options. Keep the remaining ports plugged. * 3 Case drain port is available for use when draining hydraulic fluid from pump casing. Foot Mounting type Note : For Foot Mounting Type refer page no. 51. Single pump, Compensator Type 39

145-FR1 -S-6 Side Port Type DIMENSIONS IN MILLIMETRES Flow dj. Screw 17 Hex. *2 Rc 3 4 (Both Side) 357.5 112 89 23 13 7 Diacharge Port Drain Port 112 72 143 112 72 58.7 Discharge Port 32 M1 Thd. x 19 Deep *3 Case 5 Hex.Soc. 3.2 299.5 26 24 44.45 44. 49.39 49.21 152. 152.35 11 R22 228.6 273 11.14 Key 11.11 Width 228.6 198.5 141 21.5 x Thru. 39 Spotface (From Rear) X Filling Port *1 27 Hex. Head Plug Furnished Eye Bolt M1 Thd. Pres. dj.screw 17 Hex. 48 77.8 * 1 Install the pump so that the Filling Port is at the top. * 2 Use either port of two drain ports at your option. Keep the remaining ports plugged. Note that the drain port is machined only on the left side, as viewed from the shaft end. * 3 Case drain port are available for use when draining hydraulic fluid from pump casing. 299.5 42.9 View rrow X M12 Thd. x 19 Deep Foot Mounting type Note : For Foot Mounting Type refer page no. 52. Single pump, Compensator Type

Spare Parts List 1- FR1-12 Sl. No. List of Seals Name of Parts Part Numbers Qty. Pres. dj. Range B C & H 1 Oil Seal TCN248Y 1 1 2 O-Ring SO-N-G5 1 1 3 O-Ring SO-NB-P14 1 1 4 O-Ring SO-NB-G12 1 1 5 O-Ring SO-NB-P6 2 2 6 O-Ring SO-NB-P12 6 5 7 O-Ring SO-N-18 1 1 8 O-Ring SO-NB-P1 1 1 9 O-Ring SO-NB-P9 --- 1 List of Seals Kits Pump Model Numbers 1-FR1B-12 1-FR1C-12 1-FR1H-12 PISTON PUMPS Seal Kit Numbers KS-1-1B-12 KS-1-1H-12 Note: When ordering seals, please specify the seal kit number from the table above. Series Variable 16/22/37/56- -R-1- - -K-32 Sl. No. List of Seals Name of Parts Part Numbers 16- -R-1 22- -R-1 37- -R-1 56- -R-1 1 Oil Seal TCN254511 TCN 355511 1 2 Gasket 133-PK2 11969-1 1316-PK2 1197-9 137-PK2 11971-7 1 3 O-Ring SO-N-G25 SO-N-G3 SO-N-P36 2 4 O-Ring SO-NB-P12 SO-NB-P1 1 5 O-Ring SO-NB-P9 1 6 O-Ring SO-N-17 1 7 Seal Washer W8 1 8 O-Ring SO-NB-P14 1 9 O-Ring SO-N-G55 SO-N-G75 1 List of Seals Kits Pump Model Numbers 16- -R-1- - -K-32 22- -R-1- - -K-32 37- -R-1- - -K-32 56- -R-1- - -K-32 Seal Kit Numbers KS-16-1-32 KS-37-1-32 KS-56-1-32 Note: When ordering seals, please specify the seal kit number from the table above. Qty. Single pump, Compensator Type 41

7/9- R1 -S-6 Sl. No. List of Seals Name of Parts 7- -R1- -S Parts Numbers 9- -R1- -S 1 Gasket 1314E-PK2 11972-5 131E-PK2 11973-3 1 2 Back up Ring 131E-PK4 124-1 3 Oil Seal TCN 355511 TCN 456812 1 4 O-Ring SO-F-G85 SO-F-G95 1 5 O-Ring SO-N-P18 1 6 O-Ring SO-NB-P9 3 7 O-Ring SO-NB-P14 SO-NB-P18 1 8 Seal Washer W1-1 9 O-Ring SO-NB-P5 1 Qty. List of Seals Kits Pump Model Numbers 7- R1 S-6 9- R1 S-6 Seal Kit Numbers KS-7-1-6 KS-9-1-6 Note: When ordering the seals, please specify the seal kit number from the table above. 145- R1 S-6 List of Seals Sl. No. Name of Parts Parts Number Qty. 1 O-Ring S-31.5(NBR, Hs7) 1 2 O-Ring SO-F-G15 1 3 O-Ring SO-N-P18 1 4 O-Ring SO-NB-P9 2 5 O-Ring SO-NB-17 1 6 O-Ring SO-NB-16 1 7 O-Ring SO-NB-P18 1 8 O-Ring SO-NB-P5 1 9 Back Up Ring 131E-PK4 124-1 1 Back Up Ring For SO-NB-17 1 11 Back Up Ring For SO-NB-16 1 12 Oil Seal TCN 57212 1 13 Gasket 1312-PK2 11974-1 1 Note: When ordering seals, please specify the seal kit number KS-145-1-6. 42 Single pump, Compensator Type

-Single Pump, Proportional Electro-Hydraulic Load Sensing Type Performance Characteristic (Small Input Large) Current i 2 (Small Input Large) Current i 1 i1 Graphic Symbol i1 M O 16/22/37/56 i2 i2 Series Variable M O Model Number Designation 56 -F -R -4 -C -K -32 Direction of dj. Range Shaft Design Series Number Mounting Control Type Rotation Kgf/cm 2 Extension Number * B: 15-7 16 (15.8 cm 3 C: 15-16 32 /rev.) H: 15-21 F: (Viewed 22 4: Flange Mtg. from Shaft B: 15-7 (22.2 cm 3 /rev.) Proportional End) C: 15-16 Electro-Hydraulic 37 Load Sensing L: R: (36.9 cm 3 /rev.) Foot Mtg. Clockwise *1 Type B: 2-7 56 (56.2 cm 3 /rev.) C: 2-16 H: 2-21 *1 vailable to supply pump with anti-clockwise rotation. Consult Yuken for details. K: Keyed Shaft 7 -F R 4 C S -6 Direction of dj. Range Port Design Series Number Mounting Control Type Rotation Kgf/cm 2 Position Number * 7 (7. cm 3 /rev.) 9 (91. cm 3 /rev.) 145 (145 cm 3 /rev.) F: Flange Mtg. L: Foot Mtg. (Viewed from Shaft End) R: Clockwise *1 4: Proportional Electro-Hydraulic Load Sensing Type C: 15-16 H: 15-21 7/9/145 S: Side Port 32 32 32 6 6 6 Single Pump, Proportional Electro-Hydraulic Load Sensing Type 43

Pipe Flange Kits Pipe Flange kits are available. When ordering, specify the kit number from the table below. Pump Model Numbers 16- -R-4 22- -R-4 37- -R-4 56- -R-4 7- R4 9- R4 145- R4 Instructions Name of Port Pipe Flange Kit Numbers. Threaded Connection Socket Welding *1 Suction F5-6--1 F5-6-B-1 Discharge *2 *2 Suction F5-1--1 F5-1-B-1 Discharge F5-6--1 F5-6-B-1 Suction F5-12--1 F5-12-B-1 Discharge F5-1--1 F5-1-B-1 Suction F5-16--1 F5-16-B-1 Discharge F5-1--1 F5-1-B-1 *1 In case of using socket welding flanges, there is a case where the operating pressure should be set lower than the normal because of strength of the flanges. Therefore, please pay cautious attention to the operating pressure when the socket welding flanges are used. *2 Discharge port for pump model 16 and 22 is available only the threaded connections. Details of pipe flange kits are described in EIC-L-11 page no. 744. Bleeding ir In order to get steadily controlled pressure and flow, bleed air by loosening the air vent screw and fill solenoid armature with operating oil. Manual djustment Screws Manual adjustment screws may be used for initial running adjustment or in case of electrical failures in order to adjust pressure and flow temporarily. In case of normal use, put the manual adjustment screws back in their preset position. Position of Cable Departure Position of cable departure can be changed. For details, refer to EDG-1 valve in EIC-H-11page no. 555. Connection of Surge Cut-off Valve to Series Pump (For 16 to 56 Type) If using surge cut-off valve (SF115--1), connect between pilot port PP of this pump and port PP of surge cut-off valve as pilot piping (refer to drawing below). Inside diameter of pipe should be more than 8 mm. Consult Yuken for details of surge cut-off valve. Surge Cut-off Valve (SF115--1) i1 "PP" i2 M O 44 Single Pump, Proportional Electro-Hydraulic Load Sensing Type

Specifications Descriptions Geometric Displacement Operating Pres. (Kgf/cm 2 ) Shaft Speed Range r/min. Flow Control Model Number cm 3 /rev. 16 22 37 56 7 9 145 15.8 22.2 36.9 56.2 7. 91. 145 Rated *2 16 16 16 16 21 21 21 Intermittent *1 21 16 21 21 21 21 21 Max. 18 18 18 18 18 18 18 Min. 6 6 6 6 6 6 6 Flow dj. Range 1-28.4 1-1-66 1-11 1-126 1-163 2-261 Min. Pres. Required Kgf/cm 2 for Flow dj. 15 15 15 2 1 1 1 Differential Pres. Kgf/cm 2 3.7 2.2 Step Response * 5 ( Max. Flow) ms 7 8 12 125 1 12 21 Hysteresis 3% or less* 4 Rated Current m 9 7 7 79 82 92 92 Coil Resistance [2 C] 1 Pres. dj. Range Kgf/cm 2 Refer to model Number Designation Series Variable Control Step t Response 1 * 5 8 8 5 55 15 15 16 ms t 2 * 5 1 9 8 8 8 12 18 Hysteresis 2% or less* 4 Rated Current Coil Resistance [2 C] pplicable mplifier Model* 3 pprox. Mass Kg. m Ω (Pres. dj. Range) B: 77, C:88, H:79 1 ME-D2-11-11 C: 86 H: 765 C: 873 H: 765 C: 875 H: 755 Flange Mtg. 32 32 38 45 72.5 88.5 19.5 Foot Mtg. 34.2 34.2 43.2 49.3 84.5 19 134.5 Model Pres. Step Response t 1 t 2 Loading Volume 16, 22 15 16 Kgf/cm 2 16 15 Kgf/cm 2 High Hose 3/8 x 2 m 37, 56 2 16 Kgf/cm 2 16 2 Kgf/cm 2 High Hose 3/4 x 2 m 7, 9, 145 3 16 Kgf/cm 2 16 3 Kgf/cm 2 High Hose 1-1/4 x 2 m *1 Whenever setting pressure, make sure the full cut-off pressure never exceeds the maximum intermittent pressure. *2 When operating the pump exceeding the rated pressure, operating conditions are restricted. Refer to page no. 24. *3 For detail specifications of power amplifiers, refer to EIC-H-18 page no. 691. *4 The figure mentioned in the above table are those obtained using Yuken s amplifier. *5 Step response depends on circuit and operating conditions. Data shown in the table above is an example based on the condition right. Single Pump, Proportional Electro-Hydraulic Load Sensing Type 45

Full Cut-off Pres. Vs. Input Current 16/22/37/56 Kgf/cm² 32 24 16 8 N=18 r/min. 2 6 8 1 37 7 6 5 3 2 1 9 21 2 16 12 8 16 2 16 12 Input Current m N=18 r/min. 2 6 8 8 Typical Performance Characteristics Oil Viscosity 2 cst [ISO VG 32, 5 C] 2 6 8 9 Input Current m Note : adjustment range H is not available for 22. vs. Input Current 46 Full Cut-off Presuure Input Current m Input Current m "H" "B" "C" N=18 r/min. 2 6 8 1 7/9/145 Kgf/cm² Full Cut-off Presuure 22 3 2 1 56 11 1 8 6 2 7 1 12 8 145 2 2 16 12 8 28 2 2 16 12 8 PISTON PUMPS "H" 2 6 8 1 Input Current m N=18 r/min. 2 6 8 Input Current m N=18 r/min. 2 6 8 9 Input Current m N=18 r/min. 2 6 8 1 Input Current m Input Current m "C" N=18 r/min. 2 6 8 1 Single Pump, Proportional Electro-Hydraulic Load Sensing Type

16-F-R-4-22-F-R-4- Gauge Connection for Pump Discharge Rc 1/4 Thd. Tank Port Rc 1/4 Thd. 19 M1 Thd. x17 Deep *1 Detail of Discharge Port 22.2 [For Japanese Standard] 14 32.5 2.5 1 28 18.6 X Safety Valve dj. Screw 17 Hex. 15 255.5 177.5 -K-32 -K-32 *2 Cable Departure (For Pres. Control) 152.5 57.5 ir Vent 3 Hex. Soc. Manual dj. Screw 3 Hex. Soc. G 3 8 Thd. 229 213 262 48 167.5 26.5 172 187 12 47.6 59 94 19.5 19.2 Discharge Port 44.5 6.5 25 21.24 21.8 152.2 7 41 56 85 Filling Port 22 Hex. Head Plug Furnished Rc 3/8 Thd. 82.55 82.5 96 19.5 View rrow X 95 12 57.5 DIMENSIONS IN MILLIMETRES 16 13 188 11.5 63.2 Pilot Port "PP" Rc 1/4 Thd. 4.79 4.76 18 R12 Cable Departure *2 (For Flow Control) Manual dj. Screw 3 Hex. Soc. 13 ir Vent 3 Hex. 3 Places Discharge Port G 3/8 Thd. See*3 *2 Cable pplicable: Outside 8-1 mm. Conductor rea Not Exceeding 1.5 mm 2. *3 Do not touch the screw because it is adjusted at the time of shipment. Series Variable Foot Mounting type 12 x Thru. 24 Spotface 14 15 8 5 56.5 95 95 27.5 Note: For other dimensions, refer to Flange Mtg. 72.5 72.5 Single Pump, Proportional Electro-Hydraulic Load Sensing Type 18 47

37-F-R-4- -K-32 ir Vent 3 Hex. Soc. 3 Places Manual dj. Screw 3 Hex. Soc. X 275.5 185.5 Manual Presure dj. Screw 3 Hex. Soc. 147.2 38.5 59 296.5 9.5 11.5 77 3 ir Vent 3 Hex. Soc. 3 Places 32 *1 Cable Departure (For Pres. Control) Filling Port 22 Hex. Head Plug Furnished Rc 1/2 Thd. 15 Safety Valve dj.screw 3 Hex.Soc. 77.3 6.38 6.35 132 195 228 282 12 14 12 146 174 22 25 R14 Dischrge Port Pilot Port "PP" Rc 1/4 Thd. 1.5 115.5 27 *1 Cable Departure (For Flow Control) Discharge Port 2 58.7 85 7 Gauge Connection for Pump Diascharge Rc 1/4 Thd. 47.6 22.23 22.2 25.1 24.85 11.6 11.55 32 M1 Thd. x19 Deep 3.2 36 42 83 22.2 M1 Thd. x 19 Deep *1 Cable pplicable: Outside 8-1 mm. Conductor rea Not Exceeding 1.5 mm 2. View rrow X Foot Mounting type Mounting Bracket is common to that of pressure compensator model. DIMENSIONS IN MILLIMETRES 14 x Thru. 28 Spotface 3 12 6 74 115 39 12 95 95 14 15 48 Note: For other dimensions, refer to Flange Mtg. Single Pump, Proportional Electro-Hydraulic Load Sensing Type 23

56-F-R-4- Manual Screw 3 Hex. Soc. ir Vent 3 Hex. Soc. 3 Places Manual Flow dj. Screw 3 Hex. Soc. X 283.5 185.5 -K-32 147.2 7 ir Vent 3 Hex. Soc. 3 Places 32.5 62 38.5 9.5 122.5 43.5 Cable Departure*1 (For Pres.Control) 5.5 35.32 35.14 *2 (Both Sides) Rc 3/4 Thd. 9 Filling Port 22 Hex. Head Plug Furnished 14 77.8 41 49 Safety Valve dj. Screw 3 Hex. Soc. 7.97 7.94 Series Variable Gauge Connection for Pump Discharge Rc 1/4 Thd. 12 27 2 294 31.75 31.7 11.6 11.55 12 146 174 232 R14 25 Discharge Port Pilot Port "PP" Rc 1/4 Thd. 94 M1 Thd. x 19 Deep 35 58.7 3.2 38 1 116 27 85 View rrow X 22.2 44 47.6 Cable Departure *1 (For Flow Control) M1 Thd. x 19 Deep Discharge Port 2 *1 Cable pplicable: Outside 8-1 mm. Conductor rea Not Exceeding 1.5 mm 2. *2 Use either port of two drain ports at your option. Keep the remaining port plugged. 56-L-R-4- -K-32 Foot Mounting type 14 x Thru. 28 Spotface DIMENSIONS IN MILLIMETRES 3 15 12 6 115 77 42 12 95 95 23 14 Note: For other dimensions, refer to Flange Mtg. Single Pump, Proportional Electro-Hydraulic Load Sensing Type 49

7-FR4 S-6 ir Vent 3 Hex.Soc. 3 Places Manual Flow dj.screw 3 Hex. Soc. ir Vent 3 Hex. Soc. 3 Places 83 *3 Cable Departure (For Flow Control) 3.2 Tank Port Rc 3/8 Thd. Primary Gauge Connection For Pump Discharge Rc 1/4 Thd. M1 Thd. x 17 Deep Manual dj.screw Cable Departure *3 3 Hex. Soc. (For Pres. Control) 344.5 *1 227.5 (Both Sides) 196.5 Rc 3/4 Thd. 191.5 137 19.5 65 9.5 62 58.7 215 276 Discharge Port 25 Dia 16 18 31.75 31.7 *1 Use either port of two drain ports at your option. Keep the remaining port plugged. *2 Case drain port is available for use when draining hydraulic fluid from pump casing. *3 Cable pplicable: Outside 8-1 mm. Conductor rea Not Exceeding 1.5 mm 2. 35.32 35.14 127. 126.95 9 Pilot Port Rc 1/4 Thd. Secondary Gauge Connection For Pump Discharge Rc 1/4 Thd. 137 12 5 35 Spotface (From Rear) 2 Places 27 Dia Spotface (From Rear) Filling Port 22 Hex. Head plug Furnished 196.5 169 1 95 14.3 73 73 246.5 114.4 134 181 211 Eye Bolt M1 View rrow X 14 Safety Valve dj. Screw 3 Hex. Soc. 7.97 7.94 18 14 38 69.9 114.4 18 196.5 118 X M12 Thd. x 19 Deep 35.7 *2 Case 5 Hex. Soc. 7-LR4 S-6 Foot Mounting type DIMENSIONS IN MILLIMETRES 42.5 127 22 x Thru. 43 Spotface 24 13 3 125 77 26 195 37 171 13 13 32 Note: For other dimensions, refer to Flange Mtg. 5 Single Pump, Proportional Electro-Hydraulic Load Sensing Type

9-FR4 S-6 ir Vent 3 Hex.Soc. 3 Places Manual Flow dj. Screw 3 Hex.Soc. ir Vent 3 Hex. Soc. 3 Places *3 Cable Departure (For Flow Control) 83 3.2 Tank Port Rc 3/8 Thd. Primary Gauge Connection for Pump Discharge Pres. Rc 1/4 Thd. M1 Thd.x17 Deep Manual dj.screw 3 Hex.Soc. 37.5 251 22 215 16.5 119.5 23 58.7 238.5 299.5 Discharge Port 25 *1 Both Sides Rc 3/4 Thd. Pilot Port Rc 1/4 Thd. 95 Secondary Gauge 23 Connection for Pump 63 Discharge 13 Rc 1/4 Thd. 22 *3 Cable Departure (For Control) 38.1 38.5 42.36 42.18 152. 152.35 Case 5 Hex.Soc. *2 113 Eye Bolt M1 Filling Port 27 Hex. Head Plug Furnished 137 12 5 21.5 x Thru. 39 Spotface (From Rear) 26.5 179 15 14.3 68 161.6 15 68 X *1 Use either port of two drain ports at your option. Keep the remaining port plugged. *2 Case drain port is available for use when draining hydraulic fluid from pump casing. *3 Cable pplicable: Outside 8-1 mm. Conductor rea Not Exceeding 1.5 mm 2. View rrow X 9-LR4 S-6 Foot Mounting DIMENSIONS IN MILLIMETRES 22 x Thru. 43 Spotface 1 3 24 25 48 Dia Safety Valve dj. Screw 3 Hex. Soc. 161.6 R22 9.56 9.53 127 26 M12 Thd. x 19 Deep Series Variable 27 77.8 42.9 125 11 2 7 215 157.5 157.5 375 Note: For other dimensions, refer to Flange Mtg. Single Pump, Proportional Electro-Hydraulic Load Sensing Type 51

145-FR4 S-6 *3 Cable Departure Manual (For Pres. Control) dj. Screw 3 Hex.Soc. ir Vent 28.5 112 3 Hex. Soc. 249.5 23 3 Places 225 Tank Port Rc 3/8 Thd. 168 Cable*3 89 13 Departure (For Flow 7 Control) 83 3.2 Primary Gauge Connection for Pump Discharge Pres. Rc 1/4 Thd. M1 Thd. x17 Deep Discharge Port 25 58.7 264 332 24 26 *2 Case 5 Hex. Soc. 44.45 44. 49.39 49.21 *1 (Both Sides) Rc 3/4 Thd. ir Vent 3 Hex. Soc. 3 Places Manual Flow dj. Screw 3 Hex. Soc. Pilot Port Rc 1/4 Thd. Secondary Gauge Connection For Pump Discharge Rc 1/4 Thd. 152. 152.35 11 137 12 5 21.5 x Thru. 39 Spotface (From Rear) Filling Port 27 Hex.Head Plug Furnished 216.5 189 16 72 85.3 228.6 273 112 72 Eye Bolt M1 Thd. Safety Valve dj. Screw 3 Hex.Soc. 28 141 R22 11.14 11.11 228.6 X 48 *1 Use either port of two drain ports at your option. Keep the remaining port plugged. *2 Case drain ports are available for use when draining hydraulic fluid from pump casing. *3 Cable pplicable: Outside 8-1 mm. Conductor rea Not Exceeding 1.5 mm 2. 42.9 299.5 View rrow X 77.8 M12 Thd. x 19 Deep 145-LR4 S-6 Foot Mounting type DIMENSIONS IN MILLIMETRES 22 x Thru. 43 Spotface 187.3 3 114.3 119 185 8 28 187.3 187.3 438 29 3 Note: For other dimensions, refer to Flange Mtg. 52 Single Pump, Proportional Electro-Hydraulic Load Sensing Type

- Single Pump, Electro-Hydraulic Proportional & Flow Control Type Safety Valve Input Signal for Flow Control Input Signal for Control mplifier Proportional Solenoid Sensor Control Piston Control Valve Performance Characteristic Curve (S Input Voltage L) *1 *2 (S Input Voltage L) Series Variable Graphic Symbols Tilt ngle Sensor Bias Piston *1 Unloading pressure when input signal is V. *2 Safety valve setting pressure. 16/22/37/56 7/9/145 Model Number Designation 7 -F R 4E 16 M -6-6 Series Number 16 (15.8 cm 3 /rev.) 22 (22.2 cm 3 /rev.) 37 (36.9 cm 3 /rev.) 56 (56.2 cm 3 /rev.) 7 (7. cm 3 /rev.) 9 (91. cm 3 /rev.) 145 (145. cm 3 /rev.) Mounting F: Flange Mtg. L: Foot Mtg. Direction of Rotation (Viewed from Shaft End) R: Clockwise *1 (Normal) Control Type 4E: Proportional & Flow Control Type Control Press. at Input Signal is 5 V Use the same measure of the control pressure as shown on the right, 6.9 MPa Specify within the range of maximum operating pressure Unit of Control M: MPa P: PSI Type of Outboard Pump *2 Compensation Number *3 Design Number *1 vailable to supply pump with anti-clockwise rotation. Consult Yuken for details. *2 These pumps, except 16 and 22 types, can be connected to outboard pumps. - 37/56 type (outboard pump connection symbol: None): spigot diameter:82.55mm (16,22, and PV2R1). - 7/9/145 type (outboard pump connection symbol: ): spigot diameter:82.55mm (16,22, and PV2R1). - 7/9/145 type (outboard pump connection symbol: B ): spigot diameter:11.6mm (37 and PV2R2). *3 mplifier Compensation Number may differ according to the main machine condition. Consult Yuken for details. 6 42 11 42 None *2 1 42 : *2 B: *2 2 42 6 6 6 6 6 6 Single Pump, Electro-Hydraulic Proportional & Flow Control Type 53

Specifications PISTON PUMPS Descriptions Model Numbers 16 22 37 56 7 9 145 Geometric Displacement cm 3 /rev. 15.8 22.2 36.9 56.2 7. 91. 145. Operating Pres. (Kgf/cm 2 ) Rated *2 16 16 16 16 25 25 25 Intermittent *1 21 16 21 21 28 28 28 Shaft Speed Range r/min. 6-18 Max. Flow *3 28.4. 66.4 11. 126. 163. 261. Min. Pres. Required Kgf/cm 2 Flow 2 *4 for Flow dj. Control Hysteresis 1% or less Repeatability 1% or less Input Signal Max. Flow / 5 V DC Min. dj. Kgf/cm 2 7 Hysteresis 1% or less Control Repeatability 1% or less Input Signal Specified Control / 5 V DC Coil Resistance [@ 2 C] 1 Input Impedance Flow Control : 1 kω Pres. Control : 1 kω Supply Electric Power 24 V DC (21 28 V Included Ripple) Power Input (Max.) W 3 Output Signal Flow 5 V DC/Max. Flow 5 V DC/Specified Control larm Signal Output (Open Collector) Voltage: Max. 3 V DC Current: Max. m mbient Temperature C - 5 (With Circulated ir) pprox. Mass Kg. Flange Mtg. 2.5 2.5 32. 39. 64. 76.5 96.4 Foot Mtg. 22.7 22.7 36.3 43.3 76. 97. 121.4 *1 Whenever setting pressure, make sure the full cut-off pressure never exceeds the maximum intermittent pressure. *2 When operating pump exceeding the rated pressure, operating conditions are restricted. Refer to page 24 on Catalogue No. EIC--12 for the details. *3 Maximum flow differs to shaft speed. The value listed above indicates shaft speed of 18 r/min. For other shaft speed calculate by the ratio of shaft speed. *4 To secure the required minimum pressure, special sequence valves are available, to be directly installed at the discharge port of the pump. Consult Yuken for details. Pipe Flange Kits For pipe flange, refer to form of pressure compensator type in page no.25 on Catalogue No. EIC--12. Instructions Input Signal The pump is on unload condition when the pump is operated without input signal voltage. Electric Source lways turn off electric source whenever the connector for swash plate tilt angle sensor is removed. Compensation of pump Maximum Regulated Flow at Frequency If the same maximum flow is required at 5 Hz or 6 Hz, connect short plug in the amplifier to 6 Hz at the place where supplied frequency is 6 Hz. t this condition, maximum flow comes to the same value at 5 Hz. If short plug is used at 6 Hz without making the change, maximum flow increased in proportion to frequency. Painting on MP. BOX and Solenoid To Maintain suitable radiation effect, the amp. box and the solenoid of the control valve should not be painted. Outboard Pumps 37 to 145 type pumps, except 16 and 22, can be used as double pumps, by connecting an outboard pump on the cover side. For details consult YUKEN. 54 Single Pump, Electro-Hydraulic Proportional & Flow Control Type

vs. Input Signal 32 24 16 8 1 2 3 4 5 45 3 2 1 Input Signal V DC 1 2 3 4 5 8 6 2 16 22 Input Signal V DC 37 1 2 3 4 5 Input Signal V DC 18 r/min. 15 r/min. 18 r/min. 15 r/min. 18 r/min. 15 r/min. Note: Pump characteristics at 18 r/min. is the same as those 15 r/min. where frequency is compensated. [Refer to page 5 of catalogue EIC--12] Full Cut-off Pre. Vs. Input Signal Kgf/cm² Full Cut-off 28 25 2 15 1 5 - - R4E27.5M - R4E24.5M R4E2.6M Input Signal V DC - R4E15.7M - 1 2 3 4 5 R4E6.9M 12 1 8 6 2 15 125 1 75 5 25 175 15 125 1 1 2 3 4 5 75 5 25 28 2 2 16 12 1 2 3 4 5 8 56 1 2 3 4 5 Input Signal V DC 7 Input Signal V DC 9 Input Signal V DC 145 1 2 3 4 5 Input Signal V DC 18 r/min. 15 r/min. 18 r/min. 15 r/min. 18 r/min. 15 r/min. 18 r/min. 15 r/min. Refer to page 26 to 33 for performance characteristics of pressure compensator type excluding characteristics appeared on this catalogue. Single Pump, Electro-Hydraulic Proportional & Flow Control Type 55 Series Variable

16-FR4E -6-42 22-FR4E -11-42 ir Vent 3 Hex. Soc. 3 Places Cable *3 *4 Departure Y 232.5 25.5 147.5 59 26.5 44.5 6.5 25 19.5 19.2 21.24 21.8 *1 Filling Port 22 Hex. Head Plug Furnished Rc 3/8 Thd. 82.55 82.5 96 18 11 R12 151.5 142 4.79 Key 4.46 Width 162 78 X 172 12 95 16 13 Sensor*3 Connector *2 Tilt ngle *3 Sensor Connector M1 Thd. x 17 Deep 8 Places 47.6 47.6 19 22.2 65 View rrow Y 22.2 Discharge Port 19 View rrow X Foot Mounting type *1 Install the pump so that the Filling Port is at the top. *2 Do not touch the screw because it is adjusted at the time of shipment. *3 For cable connection with amplifiers, see page 62. *4 Cable pplicable: Outside.. 8-1mm Conductor area.. Not Exceeding 1.5mm 2 Note : For Foot Mounting Type refer page no. 47. DIMENSIONS IN MILLIMETRES 56 Single Pump, Electro-Hydraulic Proportional & Flow Control Type

37-FR4E -1-42 Cable Departure*3 Cable pplicable: Outside...8-1mm Conductor rea...not Exceeding 1.5 mm² 274.5 251.5 224.5 166.5 77 62 3 9.5 *1 Filling Port 22 Hex. Head Plug Furnished Discharge Port Rc 1/2 Thd. 151.5 86 146.5 86 Suction Port *2 Series Variable ir Vent 3 Hex. Soc. 3 Places 58.7 Discharge Port 32 M1 Thd. x 19 Deep 3.2 12 178.5 252.5 31.75 31.7 35.32 35.14 11.6 11.55 X Tilt ngle*3 Sensor Connector Pres. Sensor *3 Connector 32 Plain Washer Hex. Hd. Screw 58.7 15 25 7.97 7.94 14 12 146 174 9 166 *2 178.5 3.2 End Cover Seal Cover M1 Thd. x 19 Deep View rrow X *1 Install the pump so that the Filling Port is at the top. *2 Do not touch the screw because it is adjusted at the time of shipment. *3 For cable connection with amplifiers, see page 62. Foot Mounting type Note : For Foot Mounting Type refer page no. 48. DIMENSIONS IN MILLIMETRES Single Pump, Electro-Hydraulic Proportional & Flow Control Type 57

56-FR4E -2-42 Cable Departure*4 Cable pplicable: Outside...8-1mm Conductor rea...not Exceeding 1.5 mm² ir Vent 3 Hex. Soc. 3 Places 287 264 237 179 62 5.5 43.5 9.5 *1 Filling Port [22 Hex. Head Plug Furnished] *2 RC 3/4 Thd. (Both Sides) Discharge Port Drain Port 151.5 16.5 1 1 41 49 7.97 7.94 191 58.7 Discharge Port 32 3.2 265 191 12 31.75 31.7 M1 Thd. x19 Deep 35.32 35.14 11.6 11.55 9 25 14 12 *4 Tilt ngle Sensor Connector 146 174 *3 R14 98 X *4 Pres. Sensor Connector 35 Plain Washer *1 Install the pump so that the Filling Port is at the top. *2 Use either port of two drain ports at your option. Keep the remaining port plugged. *3 Do not touch the screw because it is adjusted at the time of shipment. *4 For cable connection with amplifiers, see page 62. Foot Mounting type 3.2 191 View rrow X 58.7 M1 Thd. x 19 Deep DIMENSIONS IN MILLIMETRES Hex. Hd. Screw End Cover Seal Cover Note : For Foot Mounting Type refer page no. 49. 58 Single Pump, Proportional Electro-Hydraulic & Flow Control Type

7-FR4E -6-6 ir Vent 3 Hex. Soc. 3 Places Y 52.4 Discharge Port 26 M1 Thd. x 17 Deep Cable Departure*4 Cable pplicable: Outside... 8~1 mm Conductor rea... Not Exceeding 1.5 mm² *3 *5 333.5 37 249 26.2 246.5 35.5 *3 19.5 65 62 9.5 16 18 31.75 *2 Rc 3/4 Thd. (Both Sides) Discharge Port 31.7 35.32 35.14 127. 126.95 9 35 Spotface 2 Places (From rear) *1 Filling Port 22 Hex. Head Plug Furnished 18 116.5 95 73 181 211 Eye Bolt M1 Thd. 155 95 73 7.97Key 7.94Width 18 118 27.5 *4 Tilt ngle Sensor Connector *4 Pres. Sensor Connector 38 Plain Washer X Series Variable View rrow Y 246.5 View rrow X *1 Install the pump so that the Filling Port is at the top. *2 Use either port of two drain ports at your option. Keep the remaining port plugged. *3 Do not touch the screw because it is adjusted at the time of shipment. *4 For cable connection with amplifiers, see page 62. *5 If you do not use the special sequence valve, plug the port (FP-SC-1/32) 35.7 69.9 Case 5 Hex. Soc. Hex. Hd. Screw End Cover Seal Cover M12 Thd. x 19 Deep Foot Mounting type DIMENSIONS IN MILLIMETRES Note : For Foot Mounting Type refer page no. 5. Single Pump, Proportional Electro-Hydraulic & Flow Control Type 59

9-FR4E -6-6 *4 Cable Departure Cable pplicable: Outside... 8~1 mm Conductor rea... Not Exceeding 1.5 mm² *2 347 Rc 3/4 Thd. 32 (Both Sides) 262 Discharge Port 119.5 95 23 Drain *1 13 Filling Port Port 27 Hex. Head ir Vent 63 Plug 3 Hex. Soc. 3 Places *3 9.56 Key *3 9.53 Width Discharge Port 32 M1 Thd. x19 Deep 58.7 *5 3.2 27 324 23 22 38.1 38.5 42.36 42.18 152. 152.35 Case Drain port 5 Hex. Soc. 113 21.5 x Thru. 39 Spotface (From Rear) 117.5 155 15 15 68 68 161.6 161.6 127 217 R22 Drain Port X *4 Tilt ngle Sensor Connector Eye Bolt M1 Thd. Pres. Sensor*4 Connector 77.8 48 Plain Washer Hex. Hd. Screw 27 42.9 End Cover Seal Cover M12 Thd. x 19 Deep View rrow X *1 Install the pump so that the Filling Port is at the top. *2 Use either port of two drain ports at your option. Keep the remaining port plugged. *3 Do not touch the screw because it is adjusted at the time of shipment. *4 For cable connection with amplifiers, see page 62. *5 If you do not use the special sequence valve, plug the port (FP-SC-1/32) Foot Mounting type DIMENSIONS IN MILLIMETRES Note : For Foot Mounting Type refer page no. 51. 6 Single Pump, Electro-Hydraulic Proportional & Flow Control Type