PTO Gearbox – Reduction gearbox for driving hydraulic pumps

PTO gearboxes are specialized reduction gearboxes that optimally adapt the power take-off performance of tractors, Unimogs, or other carrier vehicles to the requirements of hydraulic pumps. Learn more...

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Coupling für Hydraulic Pump Gr. 2 / Gear Box / Support Bearing inside conical 1:5
Coupling für Hydraulic Pump Gr. 2 -- Gr. 3 Gear Box / Support Bearing inside conical 1:8, 18 teeth
  • Outer spline 18 teeth, DIN 5482 35x31
  • Inside: for conical shaft 1:8
  • suitable for group 2 pumps, european version with conical shaft 1:8
15,03 EUR
12,85 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
12,85 EUR excl. 17% tax
Coupling für Hydraulic Pump Gr. 2 / Gear Box / Support Bearing inside conical 1:5
Coupling für Hydraulic Pump Gr. 3 / Gear Box / Support Bearing inside conical 1:8, 18 teeth
  • Outer spline 18 teeth, DIN 5482 35x31
  • Inside: for conical shaft 1:8
  • suitable for group 3 pumps, european version with conical shaft 1:8
10,12 EUR
8,65 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
8,65 EUR excl. 17% tax
PTO gearbox BG2/BG3 with stub, mounting for two pumps
PTO gearbox BG2/BG3 with stub, mounting for two pumps
  • Gearbox with PTO
  • PTO stub 1 3/8''
  • gear ratio: 1:3,8
  • Mounting for two pumps
  • Size: Assembly 2 BG2 or Assembly 3 BG3
391,03 EUR
334,21 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
334,21 EUR excl. 17% tax
Fixing plate PTO gear box group 2 and 3
Fixing plate / welding plate for P.T.O. gear box group 2 and group 3
  • Fixing plate for P.T.O gear box group 2 and group 3
  • Sigot diameter: 82,5 mm
  • Fixing hole diameter: 110 mm
  • Dimensions: 300 x 150 x 8,5 mm
22,37 EUR
19,12 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
19,12 EUR excl. 17% tax
Coupling für Hydraulic Pump Gr. 3 / Gear Box / Support Bearing inside conical 1:5
Coupling für Hydraulic Pump Gr. 3 / Gear Box / Support Bearing inside conical 1:5, 18 teeth
  • Outer spline 18 teeth, DIN 5482 35x31
  • Inside: for conical shaft 1:5
  • suitable for group 3 pumps, european version with conical shaft 1:5
22,07 EUR
18,86 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
18,86 EUR excl. 17% tax
Coupling für Hydraulic Pump Gr. 3 / Gear Box / Support Bearing inside cylindrical , 18 teeth
Coupling für Hydraulic Pump Gr. 3 / Gear Box / Support Bearing inside cylindrical , 18 teeth
  • Outer spline 18 teeth, DIN 5482, 35 x 31 Inside: for cylindrical shaft
  • suitable for group 3 pumps, european version with cylindrical shaft
35,24 EUR
30,12 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
30,12 EUR excl. 17% tax
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Through precise speed and torque conversion – often with a gear ratio of 1:3.8 – they enable the efficient operation of powerful hydraulic systems even at low input speeds. Thanks to their robust construction from aluminum or cast iron and high-quality steel gears, PTO gearboxes are characterized by high load capacity, durability, and versatility. They are used in agriculture, mechanical engineering, construction, and industrial hydraulic systems.


PTO Gearboxes – Frequently Asked Questions

What is a PTO gearbox and what is it used for?

A PTO gearbox (also called a hydraulic reduction gearbox) is an interface between the power take-off shaft of a carrier vehicle (e.g. tractor, Unimog) and a hydraulic attachment. It adjusts speed and torque by converting, for example, the typical PTO speed of 540 rpm to the speed required for hydraulic pumps (e.g. 2040 rpm).

What sizes of PTO gearboxes are available and what power can they transmit?

  • BG2: For hydraulic pumps up to approx. 25 cm³/rev, power up to about 10 kW
  • BG3: For hydraulic pumps up to approx. 60 cm³/rev, power from 20 kW upwards
  • Special cast iron models can also transmit higher power

How does the PTO rotation direction affect the selection of a gearbox and pump?

PTO gearboxes reverse the rotation direction via a spur gear stage. Therefore, the hydraulic pump must be selected to match the PTO:

  • Rear PTO (clockwise when viewed from behind) → right-hand rotation hydraulic pump
  • Front PTO (counterclockwise when viewed from the front) → left-hand rotation hydraulic pump

Our gearboxes can be combined with right- and left-hand rotation pumps.

Which oil is used for PTO gearboxes and how is the oil level checked?

PTO gearboxes are filled with gear oil (e.g. SAE 90), not hydraulic oil. The oil level should reach the middle of the sight glass. Overfilling can cause leaks.

What materials are typically used for PTO gearboxes?

  • Housing: Aluminum for low weight & corrosion protection
  • Gears: Steel for high strength
  • Seals & Bearings: High-quality materials for long service life

In which areas are PTO gearboxes used?

  • Agriculture (tractors, forestry machines)
  • Construction (cranes, excavators, construction machinery)
  • Industry (stationary hydraulic systems, presses)
  • Vehicle technology (brake and steering systems, lifts)

Our gearboxes are successfully used in all these areas and are compatible with standard pumps from leading manufacturers.

What are the advantages of PTO gearboxes?

  • Adjustment of speed & torque
  • Compact design & high power density
  • Low maintenance requirements
  • Long service life with proper maintenance
  • Flexible installation (flange or sliding coupling)
  • Operation of auxiliary equipment with its own hydraulic system

What should I consider when selecting a PTO gearbox?

  • Pump power requirement: displacement, pressure, power
  • Size: BG2 or BG3 depending on requirements
  • Rotation direction: right-hand or left-hand
  • Gear ratio: e.g. 1:3.8
  • Material & application: aluminum or cast iron
  • Connection dimensions & shaft designs: e.g. 1 3/8'' stub, hollow shaft, SAE or European standard

Our PTO gearboxes offer compatible connection dimensions in all sizes, making them a cost-effective and robust alternative to other manufacturers.