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1. What is the detailed interpretation of the two models “A10VSO140DR/31R-VPB12K68” and “A10VSO140DR/31R-VPB12N00”?
| Model Segment | Explanation (Applicable to Both Models) |
|---|---|
| A10VSO | Series Identifier: Axial Piston Variable Displacement Pump (Industrial-grade, high-pressure design for medium-to-large mobile and stationary hydraulic systems) |
| 140 | Nominal Displacement: 140 cm³/rev (cubic centimeters per revolution, representing the volume of hydraulic fluid displaced by the pump per shaft rotation) |
| DR | Control Type: D = Dual control (integrated pressure and flow regulation); R = Hydraulic pilot pressure control (enables simple and stable pressure adjustment to match system load demands) |
| 31R | Mounting & Rotation Configuration: 31 = SAE 3-bolt flange (complies with SAE J744 Class 3, a standard industrial mounting interface); R = Clockwise rotation (observed from the shaft end, consistent with most common motor rotation directions) |
| VPB12 | Configuration Code: VP = Integrated pressure relief valve (provides overpressure protection for the hydraulic system); B12 = Relief valve pressure setting (calibrated to 315 bar for safe system operation) |
| K68 / N00 | Calibration & Customization Code:
– K68: Heavy-duty factory calibration (optimized for high-load, continuous-operation scenarios such as mining or construction machinery) – N00: Standard factory calibration (suitable for general industrial applications with regular load cycles, no custom modifications) |
2. What are the core technical parameters of the two pumps?
| Parameter | Specification (Both Models Share the Same Parameters) |
|---|---|
| Nominal Displacement | 140 cm³/rev |
| Maximum Working Pressure | 350 bar (5075 psi) |
| Rated Working Pressure | 315 bar (4568 psi) |
| Maximum Speed | 2000 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 | 50 mm (1.97 in) |
| Mounting Standard | SAE J744 (3-bolt flange) |
| Inlet/Outlet Port Size | Inlet: G2″ (BSPP thread), Outlet: G1 1/2″ (BSPP thread) |
| Dry Weight | Approximately 85 kg (187.4 lbs) |
| Volumetric Efficiency | ≥ 95% (under rated pressure and speed) |
| Mechanical Efficiency | ≥ 92% (under rated pressure and speed) |
