Bosch Rexroth | AA2FM25060W-VSD510
AA2FM250/60W-VSD510
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The AA2FM250/60W-VSD510 motor belongs to the A2FM Fixed Motors series from Bosch Rexroth. It is used to convert hydraulic flow into rotary motion for automated machinery. The displacement is 250 cm³ per revolution, defining the volume transferred each shaft turn. At a nominal speed of 2700 rpm it admits 675 l/min of oil, supplying adequate flow for continuous service. Operation at a nominal pressure of 350 bar yields 1393 Nm of torque for high power density. The case volume is 2.5 l, allowing for internal oil expansion and leakage collection. A mass of 73 kg provides structural stiffness for secure mounting. The maximum permissible pressure is 400 bar and protects components during transient peaks.
The primary working port measures 1 1/4 in under SAE J518, and fastening is handled by an M14 x 2 thread cut 19 mm deep. A bearing flushing port marked U uses an M14 x 1.5 thread 12 mm deep to direct cooling oil past the bearings. Drain connections t1 and t2 are M22 x 1.5 to 14 mm depth so return flow is routed without restriction. The rotary group moment of inertia is 0.061 kg·m², reducing the torque needed to accelerate the shaft. Maximum angular acceleration capability reaches 10000 rad/s² for rapid speed changes. Rotary stiffness is 73.1 kNm/rad, which limits shaft twist under load. Radial loads up to 20.3 kN at a 25 mm radius are supported by the bearings. These connection and dynamic ratings enable secure installation and fast response in closed-loop hydraulic drives.
Technical Specifications
Bearing Flushing Port U
M14 x 1.5 (12 mm deep)
Case Volume
2.5 l
Displacement
250 cm³/rev
Drain Port Size (t1/t2)
M22 x 1.5 (14 mm deep)
Inlet Flow At Nominal Speed
675 l/min
Maximum Angular Acceleration
10000 rad/s²
Maximum Pressure
400 bar
Maximum Radial Force At 25 Mm
20.3 kN
Moment Of Inertia (rotary Group)
0.061 kg·m²
Nominal Pressure
350 bar
Nominal Speed
2700 rpm
Rotary Stiffness
73.1 kNm/rad
Torque At Nominal Pressure
1393 Nm
Weight
73 kg
Working Port Fastening Thread
M14 x 2 (19 mm deep)
Working Port Size
1 1/4 in (SAE J518)
1620 Old Apex Road
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