Dimensions: 60*110*23.75mm
Mass: 0.95kg/pc
Material: GCR15
J: Pressed steel cage
Structure: taper roller bearing, cup and cone set
Cross Reference: 30212J, 30212J2, 30212 X/Q, 30212-XL, 4T-30212, 30212 and so on
Mass: 0.235kg/pc
Dimensions: 25*62*17mm
Material: chrome steel
Brand: NACHI or other brands
ZE: metal seal (equals to ZZ)
2NSE: rubber seals on both sizes (equals to 2RS)