A7H Pump
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A7H Series High-Pressure Piston Pump Release of New Products Enhancing variety of variable piston pumps, 35MPa high pressure variable piston pump “A7H Series” is now on market. Features High Pressure-Large Volume Displacement Adding to current A3H series, 180 + 270 cm3/rev displacement with rated pres. 35MPa, Max. Pres. 40MPa pumps are now available. Optional Through Drive Optional through drive allows an auxiliary or outboard pump (SAE Standard) to be directly mounted. Fire-Resistant Fluids Water-Glycols and Polyol Ester Type are applicable under certain condition. Specifications Geometric Displacement cm3/rev Approx. Mass Operating Pressure Shaft Speed Range Series Number (1) Ask Yuken for Max. Pres. operating condition. (2) Max.Allowable Shaft Speed is specified when the suction pressure is -0.01 MPa ~. (3) When the viscosity is more than 200mm2/s, system is required to be warmed up before operating at rated pressure. Specifications for Special Fluids Type of Fluids Series Number Shaft Speed Range r/min Rated Water-Glycols Polyol Ester Type Temperature Range (1) Ask Yuken for Max. Pres. operating condition. (2) Max.Allowable Shaft Speed is specified when the suction pressure is -0.01 MPa ~. (3) When the viscosity is more than 200mm2/s, system is required to be warmed up before operating at rated pressure. Application steel mill equipment, press machines and industrial machines

Control Type and Graphic Symbols Pressure Compensator Type Constant Power Control Type Constant Power Control Type with External Pilot Output flow Output flow Model Number Performance Characteristics Pressure Compensator Type Constant Power Control Type Constant Power Control Type Graphic Symbols with External Pilot Pressure Compensator Type Constant Power Control Type Constant Power Control Type with External Pilot Model Number Designation Pressure Compensator Type M- Series Number None:Petroleum Base Oils (mineral oils) M:Water-Glycols P:Polyol Ester Type Control Type Port Position 01:...

Typical Performance Characteristics of Type “A7H180” at Viscosity 20mm2/s [ISO VG 32 Oils, 50 ] Performance Characteristics of Constant Power Control Type A7H180 Performance Characteristic Curve Volumetric Efficiency Input Power Pressure Pressure Full Cut-off Power Output Flow Output Flow Full Flow 1800 r/min Full Cut-off Input Power Typical Performance Characteristics of Type “A7H265” at Viscosity 20mm2/s [ISO VG 32 Oils, 50 Performance Characteristic Curve Volumetric Efficiency Overall Efficiency Output Flow Input Power Input Power Full Cut-off Power Drain L/min Full Cut-off 1000 r/min...

Outboard Pump Mounting Type "A7H180" Pressure Compensator Type, Constant Power Control Type, Constant Power Control Type with External Pilot ALLOWABLE INPUT POWER WiTH A N0.2 PUMP, THERE IS A LIMIT TO THE SUM OF THE INPUT POWER OF THE INBOARD AND OUTBOARD PUMPS BECAUSE OF SHAFT AND COUPLING STRENGTH. IF BOTH PUMPS ARE USED FOR BOOSTING AT ONCE, REFERRING FORMULAS BELOW, CHECK THAT THE SHAFT TORQUES OF BOTH PUMPS ARE WITHIN THE ALLOWABLE RANGE. *FOR OTHER DIMENSIONS, REFER TO 1 /4 PAGE (DIMENSION FROM PUMP MOUNTING SURFACE) (DIMENSION FROM PUMP MOUNTING SURFACE) ALLOWABLE INPUT POWER WITH A...

51 Spindus Road, Speke Hall Industrial Estate Outboard Pump Mounting Type "A7H265" Pressure Compensator Type, Constant Power Control Type, Constant Power Control Type with External Pilot ALLOWABLE INPUT POWER WITH A N0.2 PUMP, THERE IS A LIMIT TO THE SUM OF THE INPUT POWER OF THE INBOARD AND OUTBOARD PUMPS BECAUSE OF SHAFT AND COUPLING STRENGTH. IF BOTH PUMPS ARE USED FOR BOOSTING AT ONCE, REERRING FORMULAS BELOW, CHECK THAT THE SHAFT TORQUES OF BOTH PUMPS ARE WITHIN THE ALLOWABLE RANGE. *F0R OTHER DIMENSIONS, REFER TO 1 /4 PAGE (DIMENSION FROM PUMP MOUNTING SURFACE) (DIMENSION FROM PUMP...