Item Name:
Covington Parts - Tumbler Nylon Bearing 250
SKU:
COVDNB038-250
Description:
The Tumbler Nylon Bearing 250 is a replacement nylon bearing designed for Covington 250 rotary tumblers. It's a low-friction wear component that supports the tumbler's rotating barrel shaft or roller assembly, maintaining smooth operation while reducing metal-on-metal contact and friction.
In lapidary and glass studios, tumblers are commonly used to polish small parts and media. For lampworkers, that can include smoothing sharp edges on small glass components after coldworking, burnishing metal findings used in beadmaking, or running abrasive media for finishing work. A worn bearing is one of the most common causes of squealing, excess vibration, heat buildup, and inconsistent barrel rotation. Replacing it is a straightforward way to restore quiet, steady operation and protect the motor and drive system from unnecessary strain.
How it is used:
- Power down and unplug the tumbler before servicing.
- Remove the barrel and access the bearing location on the tumbler frame or bearing block.
- Slide out the worn nylon bearing and clean any grit, slurry residue, or debris from the mounting area.
- Install the new nylon bearing in the same orientation as the original, ensuring the shaft or roller rides freely without binding.
- Reassemble, then test-run the tumbler briefly to confirm smooth, quiet rotation before returning it to full loads.
