Always verify dimension, bolt pattern and compatibility before installation
Brake drum Knott 250x40 5x139 compact bearing for trailer
Brake drum with dimension 250x40 mm and bolt pattern 5x139 for Knott brake system. Mounted with compact bearing in the wheel hub for running and braking action.
Brake drum in wheel hub on trailer
The brake drum sits in the wheel hub and is mounted with compact bearing. The brake shoes press against the inside of the brake drum when braking. Check braking surface and compact bearing condition during maintenance.