Spindle Bearings B7221-C-T-P4S

spindle bearings B7221-C-T-P4S 105x190x36mm bearings 105*190*36mm B7221-C-T-P4S super precision spindle bearings bearing B7221-C-T-P4S


B7221-C-T-P4S spindle bearings are super precision single row angular contact ball bearing with solid outer and inner rings, balls and cage assemblies and solid window cages.

Technical datas of spindle bearings B7221-C-T-P4S

(adjusted, in pairs or set, contact angle=15°,restricted tolerance)

B7221-C-T-P4S spindle bearings

d105  mm 
D190  mm 
B36  mm 
a37,8  mm 
Da174,5  mm Tolerance:   H12
da120,5  mm Tolerance: h12
Etk max141,2  mm 
Etk min132,2  mm 
Etk1 max141,2  mm 
Etk1 min132,2  mm 
r1 min2,1  mm 
ra max2,1  mm 
ra1 max1  mm 
rmin2,1  mm 
α15  ° Contact   angle
m3,89  kg ≈ Mass
Cr164000  N Basic   dynamic load rating, radial
C0r104000  N Basic static load rating, radial
Cur9000  N Fatigue   limit load, radial
nG Fett7000  1/min Limiting speed for grease lubrication

The limiting speeds are based on elastically   preloaded single bearings.
nG Öl11000  1/min Limiting   speed for minimal quantity oil lubrication

The   limiting speeds are based on elastically preloaded single bearings.

Code analyse of B7221-C-T-P4S spindle bearing 

B-Standard steel balls

72-heavy series

21-bore code(21x5=105mm, inner diameter)


T- laminated fabric cage, guidance on outer ring

P4S-better than P4

Application of B7221-C-T-P4S spindle bearing 

Due to very narrow tolerances, the spindle bearings B7221-C-T-P4S are particularly suitable for applications involving the highest requirements for guidance accuracy, such as bearing arrangements for main spindles in machine tools.

spindle bearing usage spindle bearing FAG-B7221-C-T-P4S FAG spindle bearing

For more super precision spindle bearings demand, freely check with Mr Gavin Chu for more details.(

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