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- Hydraulic components
- Pumps and power units
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- HPKM - Multiplier gearbox for piston pumps
HPKM - Multiplier gearbox for piston pumps

OMFB Multibox multiplier gearboxes for tractor PTO for piston pump installation. Compared with a traditional gear pump, a piston pump can achieve significantly higher pressures at high flow rates. Well suited, for example, as a pump multiplier gearbox for timber grapples and similar applications.
- 1" 3/8 ASAE tractor male shaft
- DIN ISO 14 8x32x36 female shaft for pump mounting (bolt pattern 80x80)
- can be installed in vertical or horizontal position
- before commissioning, oil must be added to the gearbox. See installation instructions
- SAE 75W-90, API GL-4/GL-4+
| Code | OMFB code | Transmission ratio | Maximum power (kW) | Maximum output torque (Nm) | Maximum output speed (rpm) | Maximum input speed (rpm) | Package size (KPL) |
|---|---|---|---|---|---|---|---|
| HPKM-1,5 | 10301520019 | 1:1,5 | 82 | 540 | 1800 | 1200 | 1 |
| HPKM-2,5 | 10301620018 | 1:2,5 | 85 | 320 | 3000 | 1200 | 1 |




