描述
A7VO A7VO28 A7VO55 A7VO80 A7VO107 A7VO160 A7VO500 Series Hydraulic Variable Piston Pump A7VO80LRH1/63R -NZB01
Below are the core technical baseline parameters for A7VO80 pump selection and operation:
Displacement: 80 cm³/rev, fully variable (0 to maximum)
Maximum Pressure: 400 bar peak / 350 bar continuous
Speed Range: Up to 3000 RPM (varies by control type)
Rotation: Standard bidirectional
Weight: Approx. 40 kg (dry)
Practical Optional Control Systems
The A7VO80 features modular Rexroth controls. The three standard configurations are shown below:
1. DA Speed-Sensitive Control
Wireless speed-dependent control. Pump output scales with shaft speed. Suited for loader travel drives and winch systems.
2. EP Electric Proportional Control
Electric proportional control via 4–20 mA / 0–10 V signal. Delivers smooth ramp-up for conveyors and mixing drums.
3. HW Hydraulic Manual Control
Simple hydraulic pilot control for swashplate adjustment. Reliable for basic open-loop systems such as agricultural spreaders.
Typical Fault Modes and Preventive Measures
Listed below are the most common A7VO80 failure modes and essential prevention methods:
Dirty Case Drain Oil Pollution
Contaminated case drain oil scratches piston slippers when the main filter bypasses. Solution: Install a 10μm absolute filter on the case drain line.
Incorrect Adjustment of Mechanical Limit Stop
Unauthorized max flow adjustment causes over-stroke and timing plate wear. Solution: Only adjust the displacement stop with calibrated flow and pressure gauges.
Oil Aeration and Abnormal Noise
High-pitched noise indicates oil aeration caused by insufficient suction pressure (min. 0.8 bar absolute). Solution: Raise the tank level or fit a charge pump.
Installation Optimization Specifications for Extended Service Life
Follow these key installation rules to extend pump service life:
1. Flexible Coupling Precision Alignment
Angular misalignment over 0.5° destroys shaft seals quickly. Use laser alignment for coupling installation.
2. Independent Housing Drainage Design
Run a standalone case drain line above tank oil level. Backpressure over 2 bar will damage shaft seals.
3. Pre-Filling Treatment Before Startup
Fill the pump housing via the top port before first startup. Even short dry running scratches the timing plate.
| A7VO80 hydraulic pump | |
| Model No. | Model Code |
| R909427817 | A7VO80DR/61L-DPB01 |
| R909429972 | A7VO80DR/61L-PPB01 |
| R909427474 | A7VO80DR/61L-PZB01 |
| R909603666 | A7VO80DR/61R-DPB01 |
| R909429970 | A7VO80DR/61R-PPB01 |
| R909427473 | A7VO80DR/61R-PZB01 |
| R909603463 | A7VO80DR/61R-VPB01 |
| R909611236 | A7VO80DR/63L-NPB01 |
| R902241727 | A7VO80DR/63L-NPB01 |
| R902231398 | A7VO80DR/63L-NPB01 |
| R902248313 | A7VO80DR/63L-NPB01 |
| R902231399 | A7VO80DR/63L-NPB01 |
| R902050996 | A7VO80DR/63L-NSB01 |
| R909610389 | A7VO80DR/63L-NZB01 |
| R902211535 | A7VO80DR/63L-NZB01 |
| R902014211 | A7VO80DR/63L-VZB01 |
| R902253713 | A7VO80DR/63L-VZB01 |
| R902011516 | A7VO80DR/63R-NPB01 |
| R902223173 | A7VO80DR/63R-NPB01 |
| R902239554 | A7VO80DR/63R-NPB01 |
| R902233099 | A7VO80DR/63R-NPB01 |
| R902241655 | A7VO80DR/63R-NPB01 |
| R902092759 | A7VO80DR/63R-NPB01-E |
| R902092783 | A7VO80DR/63R-NPB01-E |
| R902092911 | A7VO80DR/63R-NPB01-E |
| R902052291 | A7VO80DR/63R-NSB01 |
| R909610384 | A7VO80DR/63R-NZB01 |
| R902233780 | A7VO80DR/63R-NZB01 |
| R902229173 | A7VO80DR/63R-NZB01 |
| R902218651 | A7VO80DR/63R-NZB01 |
| R902102923 | A7VO80DR/63R-VZB01 |
| R909438141 | A7VO80DRG/61L-PPB01 |
| R909446519 | A7VO80DRG/61R-PPB01 |
| R902070743 | A7VO80DRG/63L-NPB01 |
| R902082441 | A7VO80DRG/63L-NSB01 |
| R902247412 | A7VO80DRG/63L-NSB01 |
| R909611217 | A7VO80DRG/63L-NZB01 |
| R902004340 | A7VO80DRG/63R-NPB01 |
| R902235264 | A7VO80DRG/63R-NPB01 |
| R902226467 | A7VO80DRG/63R-NPB01 |
| R902163902 | A7VO80DRG/63R-NPB01-E |
| R909611216 | A7VO80DRG/63R-NZB01 |
| R902226417 | A7VO80DRG/63R-NZB01 |
| R902239716 | A7VO80DRG/63R-VPB01 |
| R902084231 | A7VO80DRG/63R-VZB01 |
| R909605627 | A7VO80DRM/61R-PPB01 |
| R909611105 | A7VO80DRS/61L-NZB01 |
| R909427480 | A7VO80DRS/61L-PZB01 |
| R909427479 | A7VO80DRS/61R-PZB01 |
| R909438174 | A7VO80DRS/61R-PZB01-S |
| R902034206 | A7VO80DRS/63L-NZB01 |
| R902009850 | A7VO80DRS/63R-NZB01 |
| R902035435 | A7VO80DRS/63R-NZB01-S |
| R909610972 | A7VO80EP/61R-DZB01 |
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