Roller bearings are used in all main shaft and auxiliary drive shaft applications to support pure radial load, and allow for axial shaft elongation due to temperature changes with no additional load effect on the bearing.
17x40x12mm NJ203 BEARINGS ,we are produe this bearings with Chrome steel Gcr15 ,and brone cage ,we can produce roller quantity with 11 PCS ,12 PCS ,you can tell me your requirements .
insensitive
to misalignment of the shaft relative to the housing;
automatically corrected to
reduce excessive force to bearings;
suitable for low- or
medium-speed applications involving heavy or impact loading;
Round shape - Nylon / Plastic / Rubber Coated Bearing Pulley
plastic coated wheel bearing are widely used in sliding shower door, all kinds of different window door roller / wheel / pulley accessories