Schaeffler Product catalogue - medias
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B7021-C-T-P4S


Spindle bearings

adjusted, in pairs or sets, contact angle α = 15°, restricted tolerances

  
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Radial loadAxial load in one directionNot sealedGrease lubricationOil lubrication
 
d 105  mm   
D 160  mm   
B 26  mm   
a 30,8  mm   
Da 150  mm  Tolerance: H12
da 116  mm  Tolerance: h12
Etk max 128,3  mm   
Etk min 123  mm   
Etk1 max 128,3  mm   
Etk1 min 123  mm   
r1 min 2  mm   
ra max 2  mm   
ra1 max 1  mm   
rmin 2  mm   
α 15  °  Contact angle
m 1,6  kg  ≈ Mass
Cr 85000  N  Basic dynamic load rating, radial
C0r 61000  N  Basic static load rating, radial
Cur 5600  N  Fatigue limit load, radial
nG Fett 8500  1/min  Limiting speed for grease lubrication

The limiting speeds are based on elastically preloaded single bearings.
nG Öl 13000  1/min  Limiting speed for minimal quantity oil lubrication

The limiting speeds are based on elastically preloaded single bearings.
FV L 471  N  Preload force
FV M 1511  N  Preload force
FV H 3027  N  Preload force
KaE L 1447  N  Lift-off force
KaE M 5010  N  Lift-off force
KaE H 10710  N  Lift-off force
ca L 107  N/µm  Axial rigidity
ca M 181  N/µm  Axial rigidity
ca H 257  N/µm  Axial rigidity
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