Bosch Rexroth | A10VSO18DFR31R-VKC62N00
A10VSO18DFR/31R-VKC62N00
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The A10VSO18DFR/31R-VKC62N00 axial piston unit belongs to the A10VSO Variable Pumps series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation. With a displacement of 18 cm³ per revolution, the pump meters a controlled volume of oil each shaft turn for accurate actuator movement. The DFR pressure/flow control option modulates the swashplate so outlet flow and pressure track system demand. Clockwise rotation is specified, allowing direct coupling to right-hand prime movers. A parallel keyed shaft conforming to ISO 3019-1 and measuring 19.05 mm in diameter transmits torque while fitting standard bell housings. The internal case holds 0.4 liters of fluid to lubricate rotating groups and send leakage oil back to tank. FKM seals are installed to tolerate high temperature mineral oils common in industrial machinery.
At the nominal speed of 3300 rpm the pump delivers up to 59 L/min, supplying medium-capacity hydraulic circuits. The flow regulator keeps a 14 bar differential so compensator response stays consistent under variable load. Continuous operation is rated for 280 bar, while brief peaks up to 350 bar are permitted without damaging the cylinder block. Maximum shaft speed reaches 3900 rpm for short-term flow increases, and the prime mover must supply 80 Nm of torque at 280 bar to avoid overload. A 1 inch SAE flange on the suction port minimizes inlet losses, and the working port is sized at 3/4 inch SAE flange to fit compact outlet lines.
Technical Specifications
Case Volume
0.4 l
Control Option
DFR (Pressure/Flow)
Direction Of Rotation
Right (CW)
Displacement
18 cm³/rev
Drive Shaft Type
Parallel Keyed (ISO 3019-1)
Flow At Nnom (vg Max)
59 l/min
Flow Control Δp Setting
14 bar
Max Permissible Speed
3900 rpm
Maximum Pressure
350 bar
Nominal Pressure
280 bar
Nominal Speed
3300 rpm
Sealing Material
FKM
Shaft Diameter
19.05 mm
Suction Port Size (s)
1 in SAE Flange
Torque At 280 Bar
80 Nm
Working Port Size (b)
3/4 in SAE Flange
1620 Old Apex Road
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