PTO shafts with star slip clutch for protection against overload

Do you use machines where the load can increase significantly, such as a tedder, baler or heavy tiller? Then a PTO shaft with star slip clutch is a smart choice. These PTO shafts protect your driveline from overload by slipping briefly when the force becomes too high. This helps prevent damage to your machine, shaft or implement.

At Techniek Totaal you’ll find a wide range of PTO shafts with star slip clutch, suitable for various agricultural and vehicle applications. Whether you work with a compact tractor or a heavier agricultural machine, we’ll help you find the right match. Our range includes models from Walterscheid, Weasler, Bondioli & Pavesi and Rotaro.

How does a star slip clutch work?

A star slip clutch consists of spring-loaded friction discs that begin to slip at a preset torque level. Instead of overloading the PTO or gearbox, the clutch absorbs the tension. The drive continues to run, but the overload is handled without causing damage.

This type of clutch is especially useful with implements that may suddenly block, such as from stones in the soil or a seized rotor. A star slip clutch prevents this shock from transferring through the rest of the driveline.

Tips for using a PTO shaft with star slip clutch

Always choose a PTO shaft that matches your machine and implement in length, profile and required power. The clutch should be matched to the horsepower at 540 or 1000 RPM. Maintenance is also key: keep the clutch clean and regularly check if the slip setting is still correct.

Avoid over-greasing the clutch itself. The rest of the PTO shaft – like the sliding tubes and cross joints – should be lubricated regularly.

Advantages of a PTO shaft with star slip clutch

A PTO shaft with star slip clutch offers many practical benefits:

• protects the driveline from damage in case of blockage

• extends the service life of machine and implement

• no interruption of work during brief overload situations

• suitable for heavy-duty agricultural applications

If you're looking for reliability and peace of mind during operation, this type of PTO shaft is a solid choice.