VDR-11A VDR-11B Series VDR-11B-1A1-1A1-13 VDR-11B-1A3-1A3-13 VDR-11B-1A2-1A2-U-13 Hydraulic Vane Pump

hydraulic vane pump zRotation Direction The direction of rotation is always is clockwise (rightward) when viewed from the shaft side. xDrain Drain piping must be direct piping up to a point that is below the tank fluid level, and back pressure due to pipe resistance should not exceed 0.03MPa. cDischarge Volume Adjustment The discharge flow rate is decreased by clockwise (rightward) rotation of the discharge rate adjusting screw, and increased by counterclockwise (leftward) rotation. Loosen the lock nut before making adjustments. After adjustment is complete, re-tighten the lock nut. The graph below provides general guidelines for the relationship between the rotation angle of the flow rate adjusting screw and the no-load discharge rate

VDR-11A VDR-11B series VDR-11B-1A1-1A1-13 VDR-11B-1A3-1A3-13 VDR-11B-1A2-1A2-U-13 hydraulic vane pump

maximum pump discharge volume with the flow volume adjusting screw at the 0°position.

The broken line shows the flow

volume adjustment range lower

limit value (Provide an air bleed valve in circuits where it is difficult to bleed air before startup.) mSub Plate When a sub plate is required, specify a sub-plate type from the table in the installation dimension diagram. ,For the hydraulic operating fluid, use an R&O type and wear-resistant type of ISO VG32 to 68 or equivalent (viscosity index of at least 90). Use hydraulic operating fluid that provides kinematic viscosity during operation in the range of 20 to 150mm2/s. .The operating temperature range is 15 to 60°C. When the oil temperature at startup is 15°C or less, perform a warm-up operation at low pressure and low speed until the oil temperature reaches 15°C. Use the pump in an area where the temperature is within the range of 0 to 60°C. ⁄0Suction pressure is -0.03 to +0.03MPa (-0.3 to +0.3kgf/cm2 ), and the suction port flow rate should be to greater than 2m/sec.

VDR.