密封类型
open type,zz shield,2rs rubber seal type
retainer/cage
crown,ribbon or without retainer
retainer/cage material optional
stainless steel,nylon,PTFE,PEEK
lubrication
grease,oil,none
Vibracation Lebel Codes
V4,V3,V2,V1
clearance/radial play
C0,C2,C3,C4,C5
surface finishing
Chrome plated,Zinc plated,Nickel plated,No plated,etc