Pressure compensator
Output flow decreases automatically as system pressure approaches the preset full cut-off pressure.
Yuken high-pressure piston pumps
A3HG Series variable displacement piston pumps
Catalogue-backed specifications for Yuken A3HG16 to A3HG180 pumps, including international mounting configurations and standard through drive.
7 sizesA3HG16, A3HG37, A3HG56, A3HG71, A3HG100, A3HG145 and A3HG180
16.3-180.7cm³/rev. geometric displacement range
315 kgf/cm²rated pressure across the listed A3HG models
350 kgf/cm²maximum operating pressure across the listed models
Product overview
Higher rated pressure with international configurations
The Yuken A3HG Series is based on the A3H family and covers seven high-pressure variable displacement piston-pump sizes from 16.3 to 180.7 cm³/rev. The catalogue lists a rated pressure of 315 kgf/cm² and maximum operating pressure of 350 kgf/cm².
The catalogue identifies ISO and SAE-compatible configurations, keyed or splined shafts, and through drive supplied as standard for multiple-pump installations. Pressure-compensator, external-pilot pressure-compensator and load-sensing controls are listed.
Pressure-compensator specifications
A3HG16 to A3HG180 comparison
| Model | Geometric displacement | Minimum adjustable flow | Maximum shaft speed | Approx. flange-mount mass |
|---|---|---|---|---|
| A3HG16 | 16.3 cm³/rev. | 8.0 cm³/rev. | 3600 r/min. | 17 kg |
| A3HG37 | 37.1 cm³/rev. | 16.0 cm³/rev. | 2700 r/min. | 26.5 kg |
| A3HG56 | 56.3 cm³/rev. | 35.0 cm³/rev. | 2500 r/min. | 32.5 kg |
| A3HG71 | 70.7 cm³/rev. | 45.0 cm³/rev. | 2300 r/min. | 45 kg |
| A3HG100 | 100.5 cm³/rev. | 63.0 cm³/rev. | 2100 r/min. | 56.5 kg |
| A3HG145 | 145.2 cm³/rev. | 95.0 cm³/rev. | 1800 r/min. | 68.5 kg |
| A3HG180 | 180.7 cm³/rev. | 125.0 cm³/rev. | 1800 r/min. | 88 kg |
All listed models have a minimum shaft speed of 600 r/min., rated pressure of 315 kgf/cm² and maximum operating pressure of 350 kgf/cm². Maximum shaft speed and mass vary by model.
External pilot
Full cut-off pressure can be remotely controlled by controlling the pilot pressure.
Load sensing
Output flow is regulated in response to the load-pressure signal and control-valve differential pressure.
Selection information
Details to confirm before quotation
Send the full model code or a clear nameplate photograph. Model size, control type, mounting and shaft configuration must be identified before quotation.
- A3HG model size and complete designation
- Pressure compensator, external-pilot or load-sensing control
- ISO or SAE-compatible flange and port configuration
- Direction of rotation
- Keyed or splined shaft extension
- Quantity, hydraulic fluid and operating conditions
Download the A3HG Series catalogue
Review the manufacturer document for model coding, controls, performance characteristics, dimensions and installation guidance.
Send your A3HG Series requirement
Include the complete model, control type, quantity and application details.