•  
• Bearing Type
• current code
  W 639-2Z
• The inside diameter of
• d
  9
• Outer diameter
• D
  30
• Thickness
• B
  10
• Basic dynamic load rating
• Cr
  4.36
• Basic static load rating
• C₀
  2.32
• Fatigue load
• P_u
  0.1
• Reference speed
• Reference speed
  60000
• limit speed
• limit speed
  30000r/min
• Bearing Type
• Type
  Deep groove ball bearings

W 639-2ZBearings are suitable for gearboxes, instruments, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, construction machinery, roller skates, yoyos, etc.