Variable Pi Pump
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LT-A11VO Series (40-190ml/r)
The LT-A11VO series axial variable piston pumps adopt a swashplate design and are suitable for open-circuit hydraulic systems. Continuous displacement adjustment enables stepless variation of output flow. Pump output flow is proportional to drive speed and displacement, making the piston pump well suited for construction machinery and industrial hydraulic systems that require flexible flow and power control.
Technical Specifications
| Size | 75 | 95 | 130 | 145 | 190 | 260 | |
|---|---|---|---|---|---|---|---|
| Displacement (mL/r) | Variable pump (Vg max) | 74 | 93.8 | 130 | 145 | 192.7 | 260 |
| Boost pump (P=20bar, Vg H) | 0 | 0 | 0 | 0 | 0 | 0 | |
| Speed (r/min) | Max. speed (Vg max, n₀ max continuous) | 2550 | 2350 | 2100 | 2100 | 2100 | 1800 |
| Limited speed (nmax) | 3000 | 2780 | 2500 | 2500 | 2500 | 2300 | |
| Flow (L/min) | at n₀ max continuous and Vg max (Qv max) | 183 | 214 | 265 | 304 | 467 | 580 |
| Power (kW) | at n₀ max continuous △P=350bar (Pmax) | 110 | 129 | 159 | 177 | 281 | 349 |
| Torque (Nm) | at n₀ max continuous △P=350bar (Tmax) | 412 | 522 | 724 | 808 | 1073 | 1448 |
| Weight (kg) | Standard (excluding through drive) approx. (m) | 45 | 53 | 66 | 70 | 100 | 130 |
Features & Advantages
- Swashplate variable design: Smooth displacement adjustment, suitable for continuous-duty flow and power control.
- Through-drive configuration: Supports 100% through-drive, allowing auxiliary pumps or same-size piston pumps to be mounted in tandem, enhancing system integration.
- High system adaptability: Can operate under self-priming conditions or with a charge pump, accommodating diverse machine layouts.