A hydraulic pump speed increaser matches a tractor power take-off to the pump's required operating speed. Selection involves checking the complete drive: PTO, gear ratio, required power and pump rotation.
Lubrication before first use
The reference guide for sizes 2 and 3 specifies SAE 90 oil, described as ISO VG 220 or equivalent, with the maximum quantities below. Confirm the precise lubricant specification and level-checking procedure in the manual for the actual gearbox. The quantities are masses in kilograms and must not be confused with litres.
| Size | Specified maximum oil quantity | Specified maximum transmission power |
|---|---|---|
| 2 | 0.22 kg | 10 kW, approximately 13.5 metric hp (CV) |
| 3 | 0.35 kg | 20 kW, approximately 27 metric hp (CV) |
These figures relate to the sizes covered by the reference guide. They are not specifications for every pump gearbox.
First oil change and periodic checks
Change the oil after the first 60–80 operating hours. Following this initial change, the reference recommendation is to check oil condition and level every 1,500 operating hours. This is an inspection recommendation, not a universal oil-change interval. Apply any additional manufacturer requirements for the machine's duty.
Power, rotation and PTO speed
- Check that the power required at the intended pump displacement and maximum pressure does not exceed gearbox capacity.
- Verify drive rotation and its compatibility with the hydraulic pump.
- For the units described, PTO input speed must not exceed 540 rpm.
- Consult the technical team before using a tractor PTO operating at 750 or 1,000 rpm.
Product listings may also use terms such as reduction gearbox or speed reducer. A commercial name does not define the ratio: identify the exact reference and check input and output speeds before installation.
