MR84ZZ Miniature Shielded Bearing 4mm x 8mm x 3mm, the inner diameter is 4mm, outer diameter is 8mm and the width is 3mm, Bearing is made of Chrome Steel, each bearing has 2 Metal Sheilds to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.
All bearings are available in 52100 Chrome Steel or 440 Stainless Steel. Bearings also available with single shield or seal: suffix Z, RS, RU or TS. TTS is used smaller ball, load rating is lower than standard.
MF106ZZ bearing is a flanged ball bearing made of chrome steel in which the bearing is metal shield from both sides It has an 6mm inner diameter, a 10mm outer diameter, a 3mm thickness, and an 11.2mm flange.