Rexroth AZPU Series External Gear Pumps
Rexroth Gear Pump：AZPB/ AZPF/ AZPN/ AZPG/ AZPS/ AZPT/ AZPU/ AZPJ/ 1PF2G/ PGF/ PGH/ PGM…
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1. Series Overview
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Continuous Working Pressure: Up to 250 bar
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Intermittent Working Pressure: Up to 280 bar
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Displacement Range: 22.5 ~ 63 cm³/rev
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Heavy-duty Sliding Bearing Design: Adapt to long-cycle continuous high-pressure heavy-load operation
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Low Pulsation & Low Vibration: Optimized tooth profile reduces system noise and hydraulic impact
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Reinforced Shaft & Cover Structure: Extend service life under harsh working conditions
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Modular Multi-pump Combination: Support tandem assembly of double/triple pumps for multi-circuit hydraulic systems
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Standardized Interface: Comply with ISO/SAE international installation and connection standards
2. Model Naming Rules
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Position
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Code
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Meaning
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1
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AZPU
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Series identifier (Heavy-duty high-pressure external gear pump, Platform G)
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2
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22
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Size & grade code for medium-large displacement heavy-duty version
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3
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036
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Displacement code (036 refers to a displacement of approximately 36 cm³/rev)
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4
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R/L
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Rotation direction (R = Clockwise, L = Counterclockwise, viewed from shaft extension end)
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5
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C/R/H
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Drive shaft type (C = 1:5 taper shaft, R = cylindrical key shaft, H = spline shaft)
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6
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B/N/K
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Front cover / flange type (B = standard square flange, N = ISO standard flange, K = heavy-duty flange)
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7
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20/07
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Port specification & connection standard (threaded/flange port standard)
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8
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MB/KB
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Material & sealing configuration options (standard/high-pressure resistant sealing sets)
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“F” stands for double pump combination, “G” stands for triple pump combination for complex multi-circuit hydraulic systems
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Slash separates displacements of different pump units (e.g. 056/022 indicates two pump displacements of 56 cm³/rev and 22.5 cm³/rev respectively)
3. Displacement Specification Table
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Displacement Code
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Displacement Value
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Displacement Code
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Displacement Value
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Displacement Code
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Displacement Value
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022
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22.5
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036
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36.0
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050
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50.0
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025
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25.0
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040
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40.0
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056
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56.0
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028
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28.0
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045
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45.0
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063
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63.0
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032
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32.0
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–
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–
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–
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–
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4. Main Technical Parameters
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Parameter
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Value
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Remark
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Maximum Continuous Pressure
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250 bar
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Long-term stable high-pressure operating condition
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Maximum Intermittent Pressure
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280 bar
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Short-term peak pressure impact resistance
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Maximum Speed
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2600 rpm
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Stable speed range for medium-large displacement pumps
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Operating Temperature
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-20°C ~ +80°C
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Standard mineral hydraulic oil operating range
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Housing Material
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High-strength Aluminum Alloy
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Lightweight, high rigidity and impact resistance
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Gear Material
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Alloy Steel
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Precision grinding & surface hardening treatment for high wear resistance
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Bearing Type
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Heavy-duty Sliding Bearing
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Anti-fatigue, suitable for long-term heavy-cycle operation
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Rotation Direction
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Clockwise / Counterclockwise
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Optional according to system requirements
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Operating Performance
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High Efficiency & Low Pulsation
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Optimized tooth profile reduces vibration and improves volumetric efficiency
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Connection Type
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Flange / Thread
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Multiple standard port and flange installation options
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5. Common Model Examples
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AZPU-22-022LCB20MB (22.5 cm³/rev, counterclockwise, 1:5 taper shaft, standard square flange)
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AZPU-22-036RCB20MB (36.0 cm³/rev, clockwise, 1:5 taper shaft, threaded port)
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AZPU-22-040LDC07KB (40.0 cm³/rev, counterclockwise, cylindrical shaft, heavy-duty flange)
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AZPU-22-063RHB20MB (63.0 cm³/rev, clockwise, spline shaft, standard flange)
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AZPUF-22-056/022RDB2020MB (Double pump combination, 56/22.5 cm³/rev)
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AZPUG-22-045/032RCB2020MB (Triple pump combination, 45/32 cm³/rev)
6. Application Fields
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Heavy-duty Industrial Hydraulic Systems
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Engineering & Construction Machinery Hydraulic Equipment
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Metallurgical & Mining Mechanical Hydraulic Systems
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Large-scale Packaging & Logistics Automation Machinery
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Agricultural Heavy-duty Machinery Hydraulic Systems
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General High-pressure Medium & Large Flow Hydraulic Station Equipment.
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Model
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Rated Pressure
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Peak Pressure
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Displacement Range (ml/r)
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Allowable Speed (r/min)
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Key Features & Applications
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AZPB
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21 MPa
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25 MPa
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1.6 ~ 40
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500 ~ 3600
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General basic model with side inlet & outlet ports. Application: Ordinary machine tools, small hydraulic power units, general-purpose machinery
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AZPF
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25 MPa
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30 MPa
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1.6 ~ 63
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500 ~ 3800
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Best-selling model with dual clearance compensation and low noise. Application: Injection molding machines, forklifts, automated production lines, construction machinery
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AZPN
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20 MPa
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24 MPa
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2.5 ~ 50
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500 ~ 3400
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Cost-effective medium-pressure model with lightweight design. Application: Agricultural machinery, light industrial equipment, low-pressure hydraulic systems
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AZPG
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28 MPa
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33 MPa
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2.0 ~ 40
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600 ~ 3500
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Reinforced high-pressure version with thickened housing and high impact resistance. Application: Heavy-duty machine tools, auxiliary metallurgical equipment, small construction machinery
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AZPS
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21 MPa
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25 MPa
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1.6 ~ 32
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500 ~ 3600
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Low-noise & low-flow pulsation design with special gear profile. Application: Precision machine tools, indoor quiet operating equipment, laboratory hydraulic units
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AZPT
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25 MPa
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30 MPa
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2.5 ~ 50
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500 ~ 3700
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High-temperature resistant seals; operating temperature: -20℃ ~ +100℃. Application: Heat treatment equipment, outdoor machinery working under high temperature
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AZPU
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21 MPa
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25 MPa
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1.6 ~ 40
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500 ~ 3600
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Modular design for combined double/triple pump assembly. Application: Multi-circuit hydraulic systems, multi-function on-board equipment
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AZPJ
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16 MPa
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20 MPa
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0.8 ~ 16
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600 ~ 4000
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Mini low-displacement model with ultra-compact size and high speed capability. Application: Mini hydraulic power units, tooling fixtures, instrumentation equipment
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Complete products, original authentic products, fast delivery!Welcome to consult.
Process steps：
Customer inquiry: Customers will make inquiries before placing an order to understand product details and communication needs.
Quotation: According to customer needs, provide a formal quotation, including the name, model, quantity, delivery time, payment method, etc. of the goods.
Order confirmation: After the customer confirms the quotation, a formal purchase order will be placed.
Confirm the delivery time: communicate the delivery time with the production department, inform the factory of the order details, and arrange the production plan.
Sign an export contract: After the two parties confirm that it is correct, sign an export contract to establish a trade relationship.
Implement the letter of credit (if applicable): If the payment method of the letter of credit is used, the customer needs to be urged to issue the certificate and review the contents of the letter of credit.
Export stocking: According to the requirements of the contract and the letter of credit, arrange production, purchase raw materials and packaging, and prepare the goods.
Chartering and booking: Contact the freight forwarder to make a booking and arrange the transportation of goods.
Export inspection: Apply to the quality inspection department for export commodity inspection and provide relevant documents.
Apply for a write-off slip: apply for a write-off slip from the foreign exchange management department for subsequent foreign exchange write-off.
Export declaration: Declare exports to the customs and provide documents such as power of attorney for customs declaration, customs declaration form for export goods, commercial invoice, packing list, etc.
