Schaeffler Product catalogue - medias
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B7028-E-T-P4S


Spindle bearings

adjusted, in pairs or sets, contact angle α = 25°, restricted tolerances

  
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Radial loadAxial load in one directionNot sealedGrease lubricationOil lubrication
 
d 140  mm   
D 210  mm   
B 33  mm   
a 57,3  mm   
Da 199  mm  Tolerance: H12
da 152  mm  Tolerance: h12
Etk max 169,2  mm   
Etk min 161,6  mm   
Etk1 max 169,2  mm   
Etk1 min 161,6  mm   
r1 min 2  mm   
ra max 2  mm   
ra1 max 1  mm   
rmin 2  mm   
α 25  °  Contact angle
m 3,34  kg  ≈ Mass
Cr 145000  N  Basic dynamic load rating, radial
C0r 108000  N  Basic static load rating, radial
Cur 8600  N  Fatigue limit load, radial
nG Fett 5600  1/min  Limiting speed for grease lubrication

The limiting speeds are based on elastically preloaded single bearings.
nG Öl 9000  1/min  Limiting speed for minimal quantity oil lubrication

The limiting speeds are based on elastically preloaded single bearings.
FV L 1336  N  Preload force
FV M 4416  N  Preload force
FV H 9103  N  Preload force
KaE L 3888  N  Lift-off force
KaE M 13252  N  Lift-off force
KaE H 28168  N  Lift-off force
ca L 339  N/µm  Axial rigidity
ca M 532  N/µm  Axial rigidity
ca H 714  N/µm  Axial rigidity
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