Bosch Rexroth | AA2FM4561W-VPD520
AA2FM45/61W-VPD520
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The AA2FM45/61W-VPD520 motor belongs to the A2FM Fixed Motors series and is manufactured by Bosch Rexroth for hydraulic automation where consistent rotary output is required. Its displacement is 45.6 cm³ per revolution, which defines the amount of fluid converted into rotational movement each cycle. A nominal pressure limit of 400 bar identifies the continuous operating load, while a maximum pressure rating of 450 bar sets the upper transient boundary. At 350 bar the motor develops 254 Nm of torque, and this rises to 290 Nm when the supply reaches 400 bar, allowing predictable drive sizing. The torque constant is 0.725 Nm per bar so controllers can calculate output torque directly from line pressure. Continuous operation is permitted up to 5600 rpm, and intermittent demand can reach 6200 rpm for short duty peaks. Bidirectional rotation enables the shaft to drive or be driven in both directions without internal changes.
The maximum flow capability is 255 L/min, matching circuits that demand high volumetric throughput. A 4-hole ISO 3019-2 mounting flange standardizes the interface to gearboxes or frames. The service port uses a 3/4-inch SAE connection to simplify hose selection, and the drain port is threaded M18×1.5 for leakage return. An internal case volume of 0.33 L stores residual oil, helping pressure equalization during transient load changes. FKM seals are fitted so the unit is compatible with common hydraulic oils at elevated temperatures. The assembled weight is 13.5 kg, allowing manual handling during equipment maintenance. All these characteristics support compact and reliable operation in mobile or stationary hydraulic drives.
Technical Specifications
Case Volume
0.33 L
Direction Of Rotation
Bidirectional
Displacement
45.6 cm³/rev
Drain Port Thread
M18×1.5
Max Flow
255 L/min
Max Speed
5600 rpm
Max Speed (intermittent)
6200 rpm
Maximum Pressure
450 bar
Mounting Flange
4-hole ISO 3019-2
Nominal Pressure
400 bar
Seal Material
FKM
Service Port Size (sae)
3/4 in
Torque At 350 Bar
254 Nm
Torque At 400 Bar
290 Nm
Torque Constant
0.725 Nm/bar
Weight (approx.)
13.5 kg
1620 Old Apex Road
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