Bosch Rexroth gear pump AZPF-22 model and parameters
1. General Introduction
The Bosch Rexroth AZPF-22 series is a range of fixed-displacement external gear pumps, belonging to the Model F platform (displacement range: 4 … 28 cm³/rev). Its core function is to convert mechanical energy (torque and rotational speed) into hydraulic energy (flow and pressure), featuring pressure-dependent gap sealing and high-precision manufacturing technology to minimize heat loss and ensure high efficiency. The series is widely used in general industrial applications, with flexible configurations of flanges, shafts, and sealing materials to meet diverse installation and working requirements.
2. Key General Specifications
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Pump Type: External gear pump, fixed displacement
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Platform: Model F
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Nominal Pressure: Up to 280 bar (intermittent pressure)
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Displacement Range: 19 – 28 cm³/rev (for AZPF-22 series specific)
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Bearing Type: Slide bearings, designed for high loads
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Drive Shaft: Compatible with ISO or SAE standards, and customer-specific solutions
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Port Connections: Flanged or threaded
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Service Life: Long service life ensured by high-precision manufacturing
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Noise Level: Standard noise level
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Installation Position: No restrictions
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Ambient Temperature Range: -30 °C to +80 °C
3. Main Models and Detailed Parameters
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Model
|
Displacement (cm³/rev)
|
Rotation Direction
|
Drive Shaft
|
Flange Type
|
Line Connection
|
Sealing Material
|
Weight (kg)
|
SKU/Part Number
|
|---|---|---|---|---|---|---|---|---|
|
AZPF-22-019LNF20MB
|
19
|
Not specified
|
Not specified
|
Not specified
|
Not specified
|
Not specified
|
Not specified
|
1518222760
|
|
AZPF-22-022LCB20MB
|
22.5
|
Anti-clockwise
|
Conical 1:5
|
Rectangular flange ø 80 mm, square flange DIN 3901/3902
|
Not specified
|
Not specified
|
Not specified
|
0510725342
|
|
AZPF-22-022RFP20PB-S0040
|
22.5
|
Clockwise
|
Spline shaft DIN 5482 B 17 x 14
|
2-bolt mounting dia. 50 mm (KHD), square flange to fitting ISO 8434-1
|
Square flange to fitting ISO 8434-1
|
FKM
|
3.57
|
0510715008
|
|
AZPF-22-025RRR12MB
|
25
|
Clockwise
|
Spline shaft SAE J744 16-4 (9T 16/32 DP)
|
SAE J744 82-2 (A) 2-bolt flange
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Thread UN-2B, SAE O-ring
|
NBR
|
4.66
|
9510290111
|
|
AZPF-22-028LRR12MB
|
28
|
Counter-clockwise
|
Spline shaft SAE J744 16-4 (9T 16/32 DP)
|
SAE J744 82-2 (A) 2-bolt flange
|
Thread UN-2B, SAE O-ring
|
NBR
|
4.0
|
9510290120
|
4. Pressure and Speed Parameters (Series General)
|
Displacement (cm³/rev)
|
Max Continuous Pressure (bar)
|
Max Intermittent Pressure (bar)
|
Max Pressure Peaks (bar)
|
Min Rotational Speed (rpm)
|
Max Rotational Speed (rpm)
|
|---|---|---|---|---|---|
|
19
|
250
|
280
|
300
|
500 (at ν=12 mm²/s, p≥180 bar)
|
3500
|
|
22.5
|
220
|
250
|
290
|
500 (at ν=12 mm²/s, p≥180 bar)
|
3500
|
|
25
|
195
|
225
|
265
|
500 (at ν=12 mm²/s, p≥180 bar)
|
3000
|
|
28
|
170
|
200
|
240
|
500 (at ν=12 mm²/s, p≥180 bar)
|
3000
|
5. Model Code Explanation (Simplified)
The model code of AZPF-22 series follows a unified rule, taking AZPF-22-022RFP20PB-S0040 as an example:
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AZPF: External gear pump (fixed displacement)
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22: Series identifier, corresponding to displacement range around 22.5 cm³/rev
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022: Displacement code (22.5 cm³/rev)
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RFP: Rotation direction and shaft/flange configuration (R: Clockwise; F: Specific flange; P: Shaft type)
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20: Bearing diameter (20 mm)
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PB: Sealing and material configuration
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S0040: Special version code (deviations from catalogue standards)
6. Additional Notes
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Suction Port Pressure: 0.7 … 3 bar (absolute); for tandem pumps, the suction-side pressure difference between individual pump stages must not exceed 0.5 bar.
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Rear Cover: Standard version is made of cast iron; customized versions are available on request.
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Housing Material: Usually aluminum, ensuring sturdy and lightweight construction.
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Customization: Special configurations (valve integration, tandem pumps, multi-pump combinations) are available upon request.
