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1. What is the detailed interpretation of the two models, and are there any differences?
Key Note:
The two models are essentially the same specification—the “OO” in “PPA12OO” is a typo (common in industrial documentation) for the standard factory calibration code “N00”, while “PPA1200” is likely a formatting error (missing the letter “N” between “12” and “00”). Both refer to the same core configuration: A10VSO45DFR1/31R-PPA12N00. Below is the official model interpretation:
| Model Segment | Technical Explanation |
|---|---|
| A10VSO | Series Identifier: Axial Piston Variable Displacement Pump (Industrial-grade, high-pressure design for medium-flow hydraulic systems, compatible with mobile and stationary applications) |
| 45 | Nominal Displacement: 45 cm³/rev (cubic centimeters per revolution, indicating fluid volume displaced per shaft rotation) |
| DFR1 | Control Type: D = Dual control (pressure + flow); FR1 = Hydraulic pilot control with pressure compensation (1st-generation optimized valve, ensuring stable flow output under variable pressure loads) |
| 31R | Mounting & Rotation: 31 = SAE 3-bolt flange (complies with SAE J744 Class 3, standard industrial mounting interface); R = Clockwise rotation (viewed from the shaft end) |
| PPA12N00 | Configuration Code: PP = Integrated pressure relief valve (overload protection for hydraulic systems); A12 = Relief valve pressure setting (280 bar); N00 = Standard factory calibration (no custom modifications, suitable for general industrial scenarios) |
2. What are the core technical parameters of the pumps?
| Parameter | Specification |
|---|---|
| Nominal Displacement | 45 cm³/rev |
| Maximum Working Pressure | 350 bar (5075 psi) |
| Rated Working Pressure | 315 bar (4568 psi) |
| Maximum Speed | 2600 rpm |
| Minimum Speed | 500 rpm |
| Oil Viscosity Range | 10 – 400 mm²/s (1 mm²/s = 1 cSt) |
| Recommended Oil Temperature | -20°C to +90°C (-4°F to 194°F) |
| Oil Filtration Requirement | ≥ 10 μm (complies with ISO 4406 Class 16/13) |
| Shaft Diameter | 35 mm (1.38 in) |
| Mounting Standard | SAE J744 (3-bolt flange) |
| Inlet/Outlet Port Size | Inlet: G1 1/4″ (BSPP thread), Outlet: G1″ (BSPP thread) |
| Dry Weight | Approximately 32 kg (70.5 lbs) |
| Volumetric Efficiency | ≥ 95% (under rated pressure and speed) |
| Mechanical Efficiency | ≥ 92% (under rated pressure and speed) |
