Bosch Rexroth | AA10VSO45DFR31R-VKC62K68
AA10VSO45DFR/31R-VKC62K68
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The AA10VSO45DFR/31R-VKC62K68 is a variable displacement axial piston unit from Bosch Rexroth in the A10VSO Variable Pumps series. It supplies adjustable hydraulic flow for industrial automation circuits. The pump displacement is 45 cm³ per revolution, allowing predictable output per shaft turn. At its nominal speed it can deliver 30.9 gallons per minute, offering adequate flow for medium-size actuator groups. The shaft may run up to 3100 rpm, while operation at full displacement is limited to 2600 rpm to control piston velocity. With a pressure differential of 4100 psi the input shaft transmits 74 horsepower and 148 pound-feet of torque, giving designers clear power and torsional requirements. The integral pressure cut-off is preset at 4100 psi so system pressure is limited without external valving. Suction line pressure is permitted up to 145 psi, preventing cavitation when the pump is mounted below tank level.
System interfaces are arranged for standard hydraulic hardware. The suction port uses a 1 ½ inch SAE J518 pattern, and the working port is 1 inch SAE J518 so hose selection is straightforward. Working pressure can reach 5100 psi, enabling high force cylinders while respecting the earlier cut-off value. The case drain outlet withstands 30 psi and is threaded 7/8-14 UNF-2B to relieve housing leakage flow to the reservoir. A pilot line connection threaded 7/16-20 UNF-2B accepts control signals for the displacement regulator. Through-drive capability is provided by an SAE J744 101-2 (B) flange coupled with a 7/8 inch 13-tooth 16/32DP spline, allowing another pump to be mounted in tandem without separate drives. These connection and pressure limits define installation constraints and ensure dependable service in closed-loop hydraulic systems.
Technical Specifications
Case Drain Port Pmax
30 psi
Case Drain Port Thread
7/8-14 UNF-2B
Displacement
45 cm3/rev
Max Flow At Nominal Speed
30.9 gpm
Max Permissible Speed
3100 rpm
Max Speed At Vg Max
2600 rpm
Max Torque (Δp 4100 Psi)
148 lb-ft
Pilot Port Thread
7/16-20 UNF-2B
Power At Nominal Speed (Δp 4100 Psi)
74 HP
Pressure Cut-off Setting
4100 psi
Suction Port Pmax
145 psi
Suction Port Size
1 1/2 in (SAE J518)
Through-drive Flange
SAE J744 101-2 (B)
Through-drive Spline
7/8 in 13T 16/32DP
Working Port Pmax
5100 psi
Working Port Size
1 in (SAE J518)
1620 Old Apex Road
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