U623ZZ bearings with U groove and we can produce with stainless steel can widely used for computerized knitting, fishing and gear spinning machine.
We can produce free sample ,pls feel free to cotact with us .
6 * 30 * 8mm U Groove Bearings (gothic arch) produced with Chrome steel Gcr15 and the bearings are with two sides rubber seals can protect bearing from dust ,and we can produce with OEM service .
5*21*8mm Golden color U groove ball bearings are produce with carbon steel ,and the surface are with yellow zinc plating ,this bearings can used for sliding window ,sliding door .