Lovejoy Coupling on a Mini Skid Steer Brush Cutter or Compactor

A Lovejoy coupling is a sacrificial part that breaks so the parts around it don't. On a mini skid steer brush cutter it is a rubber Lovejoy coupling between the pump and blade shaft, and on a vibratory compactor it is usually a small plastic Lovejoy coupling inside the motor.

What is the rubber coupling on a mini skid steer brush cutter?

The rubber piece between the pump and blade shaft on a mini skid steer brush cutter is a Lovejoy coupling. It is built to break instead of damaging the pump or the blade shaft. If the blade hits something solid, like a clump of dirt, the coupling gives way first.

How do you get a replacement Lovejoy coupling?

Chupp Industrial can identify the right Lovejoy coupling and send it. Send three photos:

• the machine's nameplate or serial number
• the spot where the part goes
• the broken part itself

Keep a few spare Lovejoy couplings on hand; Chupp Industrial can send extras along with the replacement.

Why would a vibratory compactor stop vibrating but still roll?

A vibratory sheep's-foot compactor that still rolls but has stopped vibrating may have a failed Lovejoy coupling in its motor. It can happen even on a new compactor.

A vibratory compactor motor usually has a small plastic Lovejoy coupling inside it, unlike the rubber one on a brush cutter. The compactor's motor is fairly easy to remove, though it can take some force to pull it out and check the coupling.