PISTON PUMPS. A3H Series High Pressure Variable Displacement Piston Pumps. Features. A3H Series Variable Displacement Piston Pumps.

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1 3H Series High Variable EIC--13- Features 1 Control System for Wide Range pplication: 1 Compensator Type 3H Series High Variable 9 Constant Power Control Type 1 Load Sensing Type For these controls system, consult YUKEN for details. Wide range of Delivery Volume 7 models from 3H16 to 3H1 meet the wide range of delivery volume from 16.3 to 1.7 cm 3 /rev. Compact Size Because of output power Vs. mass ratio is high, 3H - Series pumps could be designed in quite small size. High Performance to meet 35 Kgf/cm of max. operating pressure. Case for 3H37 under the condition of pressure 35 Kgf/cm and shaft speed 1 r/min, the volumetric efficiency is 95 (or above) and the overall efficiency is 9 (or above). Efficiency1 6 6 Volumetric Efficiency Overall Efficiency N=1 r/min. 1

2 Instructions Hydraulic Fluids. Use petroleum base oils such as anti-wear type hydraulic oils or R & O (Rust and oxidation inhibitor) type hydraulic oils (ISO VG 3 or 6) with a viscosity range of 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 (15 mesh) reservoir type filter and the return line must have a line type filter of under 1 µm. 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 or thrust. Maximum permissible misalignment is less than.1mm TIR and maximum permissible misangularity is less than.. Suction. Permissible suction pressure at suction port of the pump is between -.16 and +.5 Kgf/cm (-15 mm Hg~+.5 Kgf/cm ). For piping to the suction port, use pipes of the same diameter as that of the specified pipe flange. Make sure that the height of the pump suction port is within one meter from the oil level in the reservoir. Hints on Piping. When using steel piping for the suction or discharge ports, excessive load from the piping on 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. 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 and surge pressure of less than 5 Kgf/cm. Length of piping should be less than 1m, and the pipe end should be submerged in oil. Recommended Drain Piping Size. Model Number 3H16, 3H37 3H56, 3H71, 3H1, 3H15, 3H1 Safety valve Bleeding ir. Starting. Fitting Size 1/ (Inside dia. 1 mm or more) 3/ (Inside dia. 16 mm or more) [Volume of Pre-Fill Oil Required] Model Volume Number cm 3 3H16 3H37 7 3H56 9 3H H1 17 3H15 3H1 3 Inside of Pipe 1 mm 19 mm When delivery line is blocked suddenly, surge pressure is occurred so a relief valve should be set in the circuit to eliminate any damage on equipment and piping. It may be necessary to bleed air from pump case and outlet line to remove causes of vibration. Before starting, first 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.

3 Setting Discharge and Delivery t the time of Despatch, 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 Turing the adjustment screw clockwise, increases pressure. [ adjusted by each one turn of the pressure adjustment screw] Model Numbers djustment Kgf/cm 3H16, 3H37, 3H H71, 3H1, 3H H 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 cm 3 /rev. Minimum adjustment flow cm 3 /rev. 3H H H H H H H H Series High Variable Flow dj. Screw Protrusion length L Vs Geometric Displacement (Reference) cm³/rev. 1 3H1 Flow dj. Screw Lock Nut L Retainer Cover Geometric Displacement H15 3H1 3H71 3H56 3H37 3H dj. Screw Protrusion Length (L) mm 3

4 -Single pump, Compensator type Graphic Symbol M O Specifications Model Number Geometric Displacement cm 3 /rev. Model Number Designation Min dj. Flow cm 3 /rev. 3H16- R1KK Operating Kgf/cm Shaft Speed r/min. Rated *1 Intermittent Max. * Min. pprox. Mass Kg. Flange Mounting Foot Mounting H37- R1KK H56- R1KK H71- R1KK H1- R1KK H15- R1KK H1- R1KK *1 Consult YUKEN when pump is used over rated pressure because, there is a restriction on operating condition. * The Max. shaft speeds shown in the above table are at suction pressure Kgf/cm. *3 The table above shows specifications for using Petroleum based oils. 3H16 -F R 1 K K -1 Series Number 3H16 (16.3cm 3 /rev.) 3H37 (37.1cm 3 /rev.) 3H56 (56.3cm 3 /rev.) 3H71 (7.7 cm 3 /rev.) 3H1 (1.5cm 3 /rev.) 3H15 (15.cm 3 /rev.) 3H1 (1.7cm 3 /rev.) Mounting F : Flange Mounting L : Foot Mounting Direction of Rotation (Viewed from Shaft End) R : Clockwise 1 (Normal) Control Type 1 : Compensator Type dj. Range Kgf/cm K: 5~35 *1 vailable to supply pump with anti-clockwise rotation. Consult YUKEN for details. * We are also supplying spline-type shaft extension. Consult YUKEN for details. Shaft Extension K: Keyed Shaft Design Number 1

5 Efficiency N=15 r/min. 1 Efficiency PISTON PUMPS Typical Performance Characteristics of 3H16 Oil Viscosity 3 cst [ISO VG 3, C] Performance Characteristics Curve N=1 r/min. N=36 r/min. Efficiency Power Power N=15 r/min. N=1 r/min. N=36 r/min Note: The dotted line in the graph indicates less than minimum adjustable flow. 36 r/min. 1 r/min. 15 r/min. Drain 5 Drain r/min. 1 r/min. 15 r/min. 36 r/min 1 r/min. 15 r/min. 3H Series High Variable (db): [One meter horizontally away from pump head cover] N=15 r/min. N=1 r/min. N=5 r/min

6 Performance Characteristic Curve PISTON PUMPS Typical Performance Characteristics of 3H37 Oil Viscosity 3 cst [ISO VG 3, C] Efficiency1 Efficiency1 Efficiency N=15 r/min. N=1 r/min. N=7 r/min N=7 r/min. 65 N=15 r/min. N=1 r/min Note: The dotted line in the graph indicates less than minimum adjustable flow Power 1 Power 6 7 r/min 1 r/min 15 r/min Drain 1 6 Drain 7 r/min. 1 r/min. 15 r/min. 7 r/min. 1 r/min. 15 r/min (db): [One meter horizontally away from pump head cover] 7 6 N=15 r/min N=1 r/min N=5 r/min

7 Performance Characteristic Curve Efficiency PISTON PUMPS Typical Performance Characteristics of 3H56 Oil Viscosity 3 cst [ISO VG 3, C] 1 N=15 r/min. N=1 r/min. N=5 r/min Efficiency N=15 r/min. N=1 r/min Efficiency N=5 r/min Note: The dotted line in the graph indicates less than minimum adjustable flow H Series High Variable Power 1 Power 6 5 r/min. 1 r/min. 15 r/min Drain 1 Drain r/min. 15, 1 r/min. 15, 1 r/min. 5 r/min. (db): [One meter horizontally away from pump head cover] 9 N=15 r/min. N=1 r/min. N=5 r/min

8 Efficiency PISTON PUMPS Typical Performance Characteristics of 3H71 Oil Viscosity 3 cst [ISO VG 3, C] Performance Characteristic Curve N=15 r/min. N=1 r/min. N=3 r/min. 1 1 Efficiency Efficiency N=15 r/min. N=1 r/min. 35 N=3 r/min Power Power (db): [One meter horizontally away from pump head cover] Note: The dotted line in the graph indicates less than minimum adjustable flow. N=15 r/min. 3 r/min. 1 r/min. 15 r/min. 9 Drain Drain N=1 r/min r/min. 1 r/min. 15 r/min. 3 r/min. 1 r/min. 15 r/min. N=3 r/min

9 Typical Performance Characteristics of 3H1 Oil Viscosity 3 cst [ISO VG 3, C] Performance Characteristic Curve N=15 r/min. N=1 r/min. N=1 r/min. Volumetric Efficiency Volumetric Efficiency Volumetric Efficiency Overall Efficiency Overall Efficiency Overall Efficiency 19 Efficiency1 Efficiency1 Efficiency Power Power Drain N=15 r/min. N=1 r/min Note: The dotted line in the graph indicates less than minimum adjustable flow. 1 r/min. 1 r/min. 15 r/min. 1 Drain N=1 r/min r/min. 1 r/min. 15 r/min. 15,1 r/min. 1 r/min. 3H Series High Variable (db): [One meter horizontally away from pump head cover] 9 N=15 r/min. N=1 r/min. N=1 r/min

10 Typical Performance Characteristics of 3H15 Oil Viscosity 3 cst [ISO VG 3, C] Performance Characteristic Curve Efficiency N=15 r/min. N=1 r/min N=15 r/min Efficiency N=1 r/min Note: The dotted line in the graph indicates less than minimum adjustable flow. Power Power r/min. 15 r/min. Drain Drain r/min. 15 r/min. 1 r/min. 15 r/min (db): [One meter horizontally away from pump head cover] 9 N=15 r/min. N=1 r/min

11 Typical Performance Characteristics of 3H1 Oil Viscosity 3 cst [ISO VG 3, C] Performance Characteristic Curve Efficiency 1 Power N=1 r/min N=15 r/min. N=1 r/min. 1 Power 16 1 r/min. 15 r/min Note: The dotted line in the graph indicates less than minimum adjustable flow. Efficiency Drain Drain N=15 r/min. 1 6 FUll Flow r/min. 15 r/min. 15 r/min. 1 r/min. 3H Series High Variable (db): [One meter horizontally away from pump head cover] 9 N=15 r/min. N=1 r/min

12 3H16-FR1KK-1 Flange Mounting Flow dj. Screw 13 Hex. Dec. Suction Port "S" Filling Port Hex. Head Plug Furnished M1 Thd. x 19 Deep Places Discharge Port "P" 19 * Fully Extended 5.5 Rc 1 Thd X Position of Pres. dj. Screw 13 Hex. Inc * Install the pump so that the filling port is at the top. 16 View rrow X 3H16-LR1KK-1 Foot Mounting DIMENSIONS IN MILLIMETRES 1 x Thru. Spotface Places For other dimensions, refer to Flange Mtg. 1

13 3H37-FR1KK-1 Flange Mounting Flow dj. Screw 17 Hex. Dec. M1 Thd. x 1 Deep Places Suction Port "S" M1 Thd. x Deep Places * Filling Port Hex. Head Plug Furnished Fully Extended 3 Rc 1 Thd X 3H Series High Variable Discharge Port "P" Position of Pres. dj. Screw 13 Hex. INC * Install the pump so that the filling port is at the top. 3H37-LR1KK-1 Foot Mounting 15 View rrow X DIMENSIONS IN MILLIMETRES 1 x Thru. Spotface Places For other dimensions, refer to Flange Mtg. 13

14 3H56-FR1KK-1 Flange Mounting Flow dj. Screw 17 Hex. Dec. 9 9 * Filling Port Hex. Head Plug Furnished Fully Extended 39 Rc 3/ Thd. 6.5 DIMENSIONS IN MILLIMETRES Suction Port "S" X M1 Thd. x Deep Places Discharge Port "P" Position of Pres. dj. Screw 13 Hex. INC * Install the pump so that the filling port is at the top. 3H56-LR1KK-1 Foot Mounting 15 View rrow X 1 x Thru. Spotface Places For other dimensions, refer to Flange Mtg. 1

15 3H71-FR1KK-1 Flange Mounting Suction Port "S" Flow dj. Screw 17 Hex. Dec * Filling Port Hex. Head Plug Furnished Fully Extended 6 Rc 3 Thd DIMENSIONS IN MILLIMETRES X 3H Series High Variable M1 Thd. x 19 Deep Places Discharge Port "P" Case 5 Hex. Soc. Position of Pres. dj. Screw 13 Hex. INC * Install the pump so that the filling port is at the top H71-LR1KK-1 Foot Mounting View rrow X 1 x Thru. Spotface Places For other dimensions, refer to Flange Mtg. 15

16 3H1-FR1KK-1 Flange Mounting Flow dj. Screw 17 Hex. Dec * Filling Port 7 Hex. Head Plug Furnished Fully Extended.5 Rc 3 Thd DIMENSIONS IN MILLIMETRES Suction Port "S" X 5. M1 Thd. x 19 Deep Places Discharge Port "P" 3 Position of Case 5 Hex. Soc. Pres. dj. Screw 13 Hex. INC * Install the pump so that the filling port is at the top. 3H1-LR1KK-1 Foot Mounting 39 View rrow X 3 x Thru. 3 Spotface Places For other dimensions, refer to Flange Mtg. 16

17 3H15-FR1KK-1 Flange Mounting Suction Port "S" Flow dj. Screw 19 Hex. Dec Filling Port Hex. Head Plug Furnished Fully Extended * Rc 3 Thd X 3H Series High Variable M1 Thd. x Deep Places Position of Pres. dj. Screw 13 Hex. Inc Discharge Port "P" 3 Case 5 Hex. Soc * Install the pump so that the filling port is at the top. View rrow X 39 DIMENSIONS IN MILLIMETRES 3H15-LR1KK-1 Foot Mounting 3 x Thru. 3 Spotface Places For other dimensions, refer to Flange Mtg. 17

18 3H1-FR1KK-1 Flange Mounting Position of Flow dj. Screw 19 Hex. Dec * Filling Port 7 Hex. Head Plug Furnished Fully Extended Rc 3 Thd Suction Port "S" X M16 Thd. x 9 Deep Places Pres. dj. Screw 13 Hex. INC Discharge Port "P" Case 5 Hex. Soc * Install the pump so that the filling port is at the top. View rrow X 39 DIMENSIONS IN MILLIMETRES 3H1-LR1KK-1 Foot Mounting 3 x Thru. 3 Spotface Places For other dimensions, refer to Flange Mtg. 1

19 Spare Parts List List of Seals Sl. No. Name of Parts Part Numbers 3H16 3H37 3H56 1 Gasket 7-PK PK PK Back Up Ring 131E-PK1-1 3 Oil Seal TCN5511 (FKM) TCN11 (FKM) TCN (FKM) 1 O-Ring S65 (NBR, Hs7) S5(NBR,Hs7) S95(NBR,Hs7) 1 5 O-Ring SO-N-G6 SO-N-G6 S71(NBR,Hs7) 1 6 O-Ring S-NB-P1 S-NB-P1 S-NB-P1 1 7 O-Ring S-NB-P1 1 O-Ring S-NB-P9 9 O-Ring S-NB-P6 S-NB-P S-NB-P9 1 1 O-Ring SO-N O-Ring SO-NB-P6 1 Note: When ordering seals, please specify the seal kit number from the table below. List of Seal Kit Model Number 3H16- R1KK-1 3H37- R1KK-1 3H56- R1KK-1 Seal Kit Numbers KS-3H KS-3H KS-3H Qty. 3H Series High Variable Sl. No. List of Seals Name of Parts Part Numbers 3H71 3H1 3H15 3H1 1 Gasket 73-PK PK PK PK Back Up Ring 131E-PK1-1 3 Oil Seal TCN651(FKM) TCN571(FKM) TCN5571(FKM) 1 O-Ring S1 (NBR, Hs7) S11 (NRB, Hs7) S15 (NBR, Hs7) S13 (NBR, Hs7) 1 5 O-Ring SO-N-G SO-N-G95 SO-N-G95 SO-N-G O-Ring SO-NB-P SO-NB-P6 1 7 O-Ring SO-NB-P1 SO-NB-P1 SO-NB-P1 1 O-Ring SO-NB-P9 SO-NB-P1 1 9 O-Ring SO-NB-P9 1 O-Ring SO-N O-Ring SO-NB-P3 1 Note: When ordering seals, please specify the seal kit number from the table below. List of Seal Kit Model Number 3H71- R1KK-1 3H1- R1KK-1 3H15- R1KK-1 3H1- R1KK-1 Seal Kit Numbers KS-3H KS-3H1-1-1 KS-3H KS-3H1-1-1 Qty. 19