Porter Cable 903373 Belt - Random Orbit

This is a great repair part for your Porter Cable palm sander.

Good value, difficult to install, need a third hand

Gave my tired old sander a new lease on life. Use compressd air to blow the sawdust out of the guts when you get in there to install it.

Restored my sander back to like new performance

Easy replacement for original that broke!

Fits well my 333 grinder and works well. Thank you!

Fits my sander / good price but to soon to tell if life span is up to par

Fit my great grandpas 20 year old router like a glove. Its nice to have it working properly again!

Got my sander working flawlessly again. I suggest keeping one of these handy as they break every 10 years or so. Don

This is a very stiff belt. Instead of transfering about half or so of the motor spin into random orbit action, it just sort of locks up and the sander spins up like a non-random orbit sander. If you turn it on and wait more than a couple seconds before appl7ing it to the board, it sands fast, but not smoothly. Not good.