MR3121-2RS Full Complement Ceramic sealed Ball Bearing, the inner diameter is 21.5mm, outer diameter is 31mm and the width is 7mm, Bearing is made of ZrO2 Ceramic Zirconium oxide.

• Item: MR3121-2RS Ball Bearing
• Type: Full Complement Ceramic Ball Bearing
• Cage: No Cage
• Balls: ZRO2 Ceramic
• Closures: PTFE covers
• Inner/outer races:ZRO2 Ceramic
• Dimensions: 21.5 mm x 31mm x 7mm/Metric
• ID (inner diameter)/Bore: 21.5mm
• OD (outer diameter): 31mm
• Width/Height/thickness: 7mm
• Size:21.5 x 31 x 7 mm
• Quantity:One Bearing