Schaeffler Product catalogue - medias
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B7220-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 100  mm   
D 180  mm   
B 34  mm   
a 35,8  mm   
Da 165,5  mm  Tolerance: H12
da 114,5  mm  Tolerance: h12
Etk max 134,4  mm   
Etk min 126,6  mm   
Etk1 max 134,4  mm   
Etk1 min 126,6  mm   
r1 min 2,1  mm   
ra max 2,1  mm   
ra1 max 1  mm   
rmin 2,1  mm   
α 15  °  Contact angle
m 3,35  kg  ≈ Mass
Cr 135000  N  Basic dynamic load rating, radial
C0r 88000  N  Basic static load rating, radial
Cur 7800  N  Fatigue limit load, radial
nG Fett 7500  1/min  Limiting speed for grease lubrication

The limiting speeds are based on elastically preloaded single bearings.
nG Öl 12000  1/min  Limiting speed for minimal quantity oil lubrication

The limiting speeds are based on elastically preloaded single bearings.
FV L 789  N  Preload force
FV M 2466  N  Preload force
FV H 4892  N  Preload force
KaE L 2439  N  Lift-off force
KaE M 8230  N  Lift-off force
KaE H 17428  N  Lift-off force
ca L 121  N/µm  Axial rigidity
ca M 203  N/µm  Axial rigidity
ca H 287  N/µm  Axial rigidity
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