Transport and Tipping Hydraulics
Power take-off driven pumps, tipping pumps and the mounting kits for tippers, skip loaders, walking-floor trailers, hook lifts and compaction bodies. Driven off the gearbox, not an electric motor.
Features
- Pump flow follows engine speed through the power take-off ratio, so tipping time is set by the gearbox as much as by the pump.
- Bi-directional pumps allow powered lowering on walking-floor and hook-lift bodies; single-direction pumps rely on gravity return.
- Pump, mounting flange, drive shaft and reservoir are usually specified as one kit because the available space under the chassis dictates all four.
- Reservoir position and breather height decide whether the system draws air at full tip angle, which is a common complaint on retrofitted bodies.
- Steel and aluminium reservoirs of the same volume behave differently for heat rejection, which matters on continuous compaction work.
Specifications
| Figure | Typical range | Unit | Why it matters |
|---|---|---|---|
| Displacement | 34 - 108 | cm3/rev | with take-off ratio it sets tipping time |
| Take-off drive ratio | 1.0 : 1 | determines pump speed and therefore flow at idle | |
| Maximum pressure | 250 - 350 | bar | matched to the body's ram and relief setting |
| Rotation | bi-directional | powered lowering needs it; gravity return does not | |
| Reservoir volume | 40 - 200 | l | must exceed the ram's swept volume with reserve |