Bosch Rexroth | AZPF-11-011RFN20MB
AZPF-11-011RFN20MB
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The AZPF-11-011RFN20MB gear pump belongs to the AZPF External High Performance Gear Pumps series from Bosch Rexroth. It supplies hydraulic fluid to mobile or industrial circuits where compact size and consistent output are required. The pump rotates clockwise, so drive shafts and hose routing must follow that direction. Its geometric displacement is 11 cm³ per revolution, a fixed volume that determines flow rate at a given speed. A continuous operating pressure of 250 bar supports regular duty cycles without overstressing the housing, while an allowable intermittent pressure of 280 bar handles brief load spikes. The unit withstands peak events up to 300 bar, protecting equipment during sudden pressure surges. A rated speed ceiling of 3500 rpm permits high flow rates when driven by fast prime movers. Suction conditions are limited to an absolute inlet pressure of 3 bar to prevent cavitation, and operation can continue down to 0.7 bar absolute at the inlet when proper fluid viscosity is maintained.
The pump sustains low-speed performance under several defined operating windows, starting at 1200 rpm when discharge pressure reaches 180 bar with 12 mm²/s oil, at 600 rpm when viscosity is 25 mm²/s under rated pressure, and at 500 rpm when outlet pressure stays below 100 bar with 12 mm²/s oil; these thresholds help designers avoid flow instability. A two-bolt mounting flange with a 50 mm diameter aligns the housing to standard motor adaptors and simplifies replacement. The drive end uses a spline shaft where each tooth measures 3.200 mm in thickness, ensuring proper torque transfer to mating couplings. An available spline engagement length of at least 14.8 mm guarantees full load contact without fretting. Total mass is 2.85 kg, so the assembly can be supported by lightweight brackets in mobile machinery.
Technical Specifications
Direction Of Rotation
Clockwise
Geometric Displacement
11 cm³/rev
Max Continuous Pressure
250 bar
Max Intermittent Pressure
280 bar
Max Peak Pressure
300 bar
Max Speed
3500 rpm
Max Suction Pressure (absolute)
3 bar
Min Speed (180 Bar–p2, 12 Mm²/s)
1200 rpm
Min Speed (25 Mm²/s At P2)
600 rpm
Min Speed (p<100 Bar, 12 Mm²/s)
500 rpm
Min Suction Pressure (absolute)
0.7 bar
Mounting Flange Diameter
50 mm (2-bolt)
Spline Tooth Thickness
3.200 mm
Usable Spline Length
14.8 mm (min)
Weight
2.85 kg
1620 Old Apex Road
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