Bosch Rexroth | AA2FO25060R-VPB05
AA2FO250/60R-VPB05
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The AA2FO250/60R-VPB05 belongs to the Bosch Rexroth A2FM Fixed Motors series and is intended for hydraulic automation where a constant-displacement element drives pumps or transmissions. It moves 250 cm³ of fluid per revolution, setting the volumetric output for each shaft turn. When operated at its nominal speed of 1500 rpm, it supplies 375 L/min to the circuit, supporting medium-flow machinery. Clockwise rotation is specified, so line routing and valving can be arranged without reversal devices. A 4-hole ISO 3019-2 mounting flange allows direct bolting to standardized housings, while the SAE 2 1/2-inch suction flange accommodates large-diameter inlet hoses to minimize pressure drop. High-pressure delivery is provided through SAE 1 1⁄4-inch flanged working ports that match common manifold blocks.
Operating limits include a nominal pressure of 350 bar and a permissible maximum of 400 bar, values that let the shaft deliver up to 1393 Nm of torque to connected equipment. Absolute inlet pressure may fall to 0.8 bar without inducing cavitation, yet it must remain below 30 bar to protect seals. The high-pressure side requires at least 25 bar to maintain internal lubrication and prevent bearing damage. A recommended flushing flow of 10 L/min continually removes heat and contaminants from the case, sustaining oil quality during prolonged duty cycles. These parameters define safe conditions for the unit within closed-loop or semi-open hydraulic systems.
Technical Specifications
Displacement
250 cm3/rev
Flow At Nominal Speed
375 L/min
Flushing Flow (recommended)
10 L/min
Maximum Inlet Pressure (abs)
30 bar
Maximum Pressure
400 bar
Minimum Hp-side Pressure (abs)
25 bar
Minimum Inlet Pressure (abs)
0.8 bar
Mounting Flange
4-Hole ISO 3019-2
Nominal Pressure
350 bar
Nominal Speed
1500 rpm
Rotation
Clockwise (R)
Suction Port (s)
SAE 2 1/2 in (flange)
Torque At 350 Bar
1393 Nm
Working Ports (a/b)
SAE 1 1/4 in (flange)
1620 Old Apex Road
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