NU20/630ECMA
SIAIF NU20/630ECMA
Type

Cylindrical roller bearing

Model：NU20/630ECMA
Thickness(mm)：170
Inner diameter d：630
Outer diameter D：920
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Detailed information

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Basic size mm
  • d630
  • D920
  • B170
Basic load rating kN
  • DynamicsC4730
  • Static Co9500
RatedSpeed r/min
  • Reference speed560
  • Limit speed850
Model
  • ModelNU20/630ECMA
Size mm
  • d630
  • d 1 ～-
  • D1 ～832
  • F,E699
  • r 1,2 Minimum7.5
  • r 3,4 Minimum7.5
  • s 1) 8.7
Shoulder and chamfer dimensions mm
  • d a Minimum658
  • d a Maximum690
  • d b ,Da Minimum705
  • Da Maximum892
  • r a Maximum6
  • r b Maximum6
Calculate coefficient
  • kr0.14
Corner Circle
  • Model-
  • Quality
  • SizeB1
  • SizeB2
Fatigue load limit Pu
  • Fatigue load limit Pu670
Quality
  • Quality400

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