How To Replace Worn Treadmill Roller Bearings - Treadmill Repair

The bearings on my treadmill went bad and were making horrible scary noises. But my treadmill was still under warranty, so they sent me a brand new rear roller. I replaced the old roller with the new one. On the treadmills I had owned, it has always been the rear roller bearings that have gone bad. Looking at my current treadmill, a Sole F85, the front roller is larger and has larger bearings. So I think that is why they don't fail as fast as the rear roller bearings. But since I had the old roller with the worn bearings, I decided to have some fun and make a new video. So in this video, I show you how to replace the bearings on your treadmill. Afterall, when the warranty expires, you are the warranty. I bought the blind hole bearing puller I use in the video at Harbor Freight, but you can rent them cheaper at many places including auto parts stores. The bearings that were on the roller were labelled 6203Z, and the brand name was TMT. I searched for bearings and found many made in China bearings for cheap, but I had also read many poor reviews for bearings made in China. I found some Nachi (made in Japan) bearings on eBay for less than $6 each and ordered those. The model number on these is 6203ZZE. The Nachi bearings had many great reviews and are supposed to be good quality bearings. I am not an expert on bearings, but I think you want to get "deep groove ball bearing" type bearings for a treadmill. And also bearings that are sealed to keep dirt from getting in them.
I hope this video helps you repair your treadmill and keep it going for many years.

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