U308
SIAIF U308
Type

Thrust ball bearing

Model：U308
Thickness(mm)：31
Inner diameter d：40
Outer diameter D：78
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Detailed information

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Model
  • Bearing53308
  • 座WasherU308
Basic size mm
  • d40
  • D78
  • H 1 31
Basic load rating kN
  • DynamicsC61.8
  • Static Co122
RatedSpeed r/min
  • Reference speed3000
  • Limit speed4300
Size mm
  • d40
  • d 1 ～78
  • D1 ～42
  • D 2 60
  • D 3 82
  • H28.5
  • C8.5
  • R64
  • s28
  • r 1,2 Minimum1
Shoulder and chamfer dimensions mm
  • d a Minimum63
  • Da Maximum60
  • r a Maximum1
Fatigue load limitPu
  • Fatigue load limitPu4.5
Minimum load factor A
  • Minimum load factor A0.077
QualityBearing+Seat
  • QualityBearing+Seat0.67

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