QTY 10 - Shielded Ball Bearing 6004Z ABEC-5 Precision High Quality for Sale

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QTY 10 - Shielded Ball Bearing 6004Z ABEC-5 Precision High Quality For Sale

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QTY 10 - Shielded Ball Bearing 6004Z ABEC-5 Precision High Quality:
$9.00

This is a bearing I've been using in some of my performance cycling training products for over a decade. I've gone thru about 200,000 of them and am finally changing the design to accommodate a shifting market, so I have plenty left over.
These are very high quality bearings, chosen for their very low friction drag and precision. The peculiar looking device shown in one of the photos is the mechanism I used them in. These go inside of a cycling training product and responds precisely to changes in wheel speed to adjust the resistance of the trainer. The bearings cannot have any friction drag from seals or it won't respond properly. They also cannot be too loose or the resistance it creates will be unpredictable. I provide unlimited lifetime warranty on my products which are used extensively by both amateur and professionals, and have never had one of these bearings create any issues. Many of my customers using the products that use these bearings hold world speed records, distance records, and routinely win cycling and triathlons all over the world as you can see in some of the photos.They are pre-lubricated and the cage is very precisely fitted to keep out debris.
These come in sleeves of 10 bearings. Purchasing a quantity of 1 buys 10 bearings.Message me if you're interested in a large quantity