•  
• Bearing Type
• Current code
  638-RZ
• The inside diameter of
• d
  8
• Outer diameter
• D
  28
• Thickness
• B
  9
• Basic dynamic load rating
• Cr
  1.33
• Basic static load rating
• C₀
  0.57
• Fatigue load
• P_u
  0.024
• Reference speed
• Reference speed
  60000
• Limit speed
• Limit speed
  38000r/min
• Type
• Type
  Deep groove ball bearings

638-RZBearings are suitable for gearboxes, instruments, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, construction machinery, roller skates, yoyos, etc.