SKF 6203-2Z Light Series Deep Groove Ball Bearing, Deep Groove Design, ABEC 1 Precision, Double Shielded, Non-Contact, Steel Cage, C0 Clearance, 17mm Bore, 40mm OD, 12mm Width, 1070.0 pounds Static Load Capacity, 2150.00 pounds Dynamic Load Capacity

I have a nice treadmill (Vision Fitness) which had a squeaking/grinding sound coming from the rollers. After disassembly, I read the bearing part number off the roller bearings and ordered the matching SKF bearings. Was an easy install after you took the time to figure how to pop them in and out using the treadmill roller rods and c-clips to pop the bearing out and back in - with a bit of ingenuity and a semi-hard rubber mallet, was able to easily replace the bearings and fix my treadmill issues. My treadmill works perfectly now and I can get back to walking off those winter pounds.

Bought to replace bearings in an expensive 52" ceiling fan. Fit perfectly and is super quiet now.

Replaced the no-name Chinese bearings in my belt sander with these and WOW what a difference!The sander is quieter, runs smoother and cooler than it ever did. The bearings fit into the bores perfectly and will keep my sander going for at least another 10 years!There's no substitute for high quality!

This was a replacement for an older Grizzly 8 inch Jointer, worked and has no bearing sounds. Easy replacement with a bearing separator. Heat the inner race with hot air gun too about 250º F and they dropped into place with no press. Easy-peezy install.

I had a 20 year old whole house fan motor start "singing" to me and I found that one of the bearings was bad.I cannot find the same motor anywhere, so I had to try rebuilding it and these bearings were the exact fit I needed.Fan works perfectly now.

smooth operation, both sides of the bearing protected by metal cover

Fit and works perfectly.

Try to fix my own water pump new ($550)Replace bearing $12. Worked.