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Bosch Rexroth | AZPF-12-004RCB20KB

AZPF-12-004RCB20KB

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The AZPF-12-004RCB20KB gear pump belongs to the AZPF External High Performance Gear Pumps series manufactured by Bosch Rexroth for hydraulic automation where reliable flow is required. A clockwise direction of rotation aligns with standard right-hand drive trains and prevents reverse flow. The displacement is 4.0 cm³ per revolution, establishing the volume delivered each shaft turn. A tapered 1:5 drive shaft promotes secure torque transfer while simplifying removal. The shaft is 17 mm in diameter, and its M12 × 1.5 thread permits direct coupling to power sources. A 3 × 5 mm key to DIN 6888 prevents hub slippage under load. The mounting flange diameter is 80 mm, providing a rigid interface to common motor brackets. NBR housing seals combined with an FKM shaft seal maintain oil containment and withstand elevated temperatures.

The pump sustains 250 bar during continuous duty, tolerates 280 bar for intermittent overloads, and endures peak events up to 300 bar, so it suits circuits with fluctuating demands. A rectangular flange coded 20 forms the port face, enabling direct connection to manifold blocks without adapters. Port bolts employ an M6 thread with 13 mm engagement depth to secure fittings. Pressure port centers are spaced 35 mm apart for alignment with standard cover plates, while the suction port uses a 40 mm spacing to reduce inlet velocity. These interface dimensions simplify hose routing and limit mounting stress, allowing the AZPF-12-004RCB20KB to integrate cleanly into compact hydraulic assemblies.

Technical Specifications

Direction Of Rotation
Clockwise

Displacement
4.0 cm³/rev

Drive Shaft Type
Tapered 1:5

Flange Diameter
80 mm

Key Size
3 × 5 mm (DIN 6888)

Max Continuous Pressure
250 bar

Max Intermittent Pressure
280 bar

Max Peak Pressure
300 bar

Port Bolt Thread
M6 (depth 13 mm)

Port Type
Rectangular Flange (Code 20)

Pressure Port Bolt Spacing
35 mm

Seal Material
NBR With FKM Shaft Seal

Shaft Diameter
17 mm

Shaft Thread
M12 × 1.5

Suction Port Bolt Spacing
40 mm

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