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1. What is the detailed interpretation of the two models “A10VSO100DFR1/31R-PPA12N00” and “A10VSO100DFLR/31R-VPA12N00”?
| Model Segment | A10VSO100DFR1/31R-PPA12N00 Explanation | A10VSO100DFLR/31R-VPA12N00 Explanation |
|---|---|---|
| A10VSO | Series Identifier: Axial Piston Variable Displacement Pump (Industrial-grade, high-pressure design for medium-to-large hydraulic systems, compatible with mobile and stationary applications) | Same as left (Consistent series definition for A10VSO hydraulic pumps) |
| 100 | Nominal Displacement: 100 cm³/rev (cubic centimeters per revolution, indicating the volume of hydraulic fluid displaced per shaft rotation) | Same as left (Both models share the same nominal displacement) |
| DFR1 / DFLR | Control Type: D = Dual control (pressure + flow); FR1 = Hydraulic pilot control with pressure compensation (1st-generation optimized valve, stable flow output under variable pressure); R = Pressure regulation function | D = Dual control (pressure + flow); FLR = Hydraulic pilot control with load-sensing function (automatically adjusts flow based on actual load demand, achieving energy saving) |
| 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) | Same as left (Consistent mounting standard and rotation direction for easy interchangeability) |
| PPA12N00 / VPA12N00 | Configuration Code: PP = Integrated pressure relief valve; A12 = Relief valve setting (280 bar); N00 = Standard factory calibration (no custom modifications) | VP = Integrated pressure relief + pressure reducing valve; A12 = Relief valve setting (280 bar); N00 = Standard factory calibration (no custom modifications) |
2. What are the core technical parameters of the two pumps?
| Parameter | A10VSO100DFR1/31R-PPA12N00 | A10VSO100DFLR/31R-VPA12N00 |
|---|---|---|
| Nominal Displacement | 100 cm³/rev | 100 cm³/rev |
| Maximum Working Pressure | 350 bar (5075 psi) | 350 bar (5075 psi) |
| Rated Working Pressure | 315 bar (4568 psi) | 315 bar (4568 psi) |
| Maximum Speed | 2200 rpm | 2200 rpm |
| Minimum Speed | 500 rpm | 500 rpm |
| Oil Viscosity Range | 10 – 400 mm²/s (1 mm²/s = 1 cSt) | 10 – 400 mm²/s (1 mm²/s = 1 cSt) |
| Recommended Oil Temperature | -20°C to +90°C (-4°F to 194°F) | -20°C to +90°C (-4°F to 194°F) |
| Oil Filtration Requirement | ≥ 10 μm (complies with ISO 4406 Class 16/13) | ≥ 10 μm (complies with ISO 4406 Class 16/13) |
| Shaft Diameter | 45 mm (1.77 in) | 45 mm (1.77 in) |
| Mounting Standard | SAE J744 (3-bolt flange) | SAE J744 (3-bolt flange) |
| Inlet/Outlet Port Size | Inlet: G1 1/2″ (BSPP thread), Outlet: G1 1/4″ (BSPP thread) | Inlet: G1 1/2″ (BSPP thread), Outlet: G1 1/4″ (BSPP thread) |
| Dry Weight | Approximately 65 kg (143.3 lbs) | Approximately 66 kg (145.5 lbs) |
| Volumetric Efficiency | ≥ 95% (under rated pressure and speed) | ≥ 95% (under rated pressure and speed) |
| Mechanical Efficiency | ≥ 92% (under rated pressure and speed) | ≥ 93% (under rated pressure and speed, optimized by load-sensing control) |
3. What are the key differences between the two models?
- Control Function:
- A10VSO100DFR1/31R-PPA12N00 (DFR1): Adopts hydraulic pilot control with pressure compensation. It maintains stable flow output when system pressure changes, suitable for scenarios where load pressure fluctuates but flow stability is required (e.g., fixed-speed industrial machinery).
- A10VSO100DFLR/31R-VPA12N00 (DFLR): Features load-sensing control. It detects the actual load demand of the system and adjusts the pump’s output flow accordingly—no unnecessary flow output, reducing energy consumption by 25-30% compared to DFR1 models, ideal for energy-saving automated systems.
- Valve Configuration:
- DFR1 model: Integrated pressure relief valve (PP) for basic overpressure protection.
- DFLR model: Integrated pressure relief + pressure reducing valve (VP) for more precise pressure regulation, suitable for systems requiring multi-pressure zone control.
- Efficiency & Weight: The DFLR model has slightly higher mechanical efficiency (≥93% vs. ≥92%) due to load-sensing optimization, and its weight is 1 kg heavier due to additional control components.
