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20:34:07 GMT+0000 (Coordinated Universal Time)


B7228-C-T-P4S-UL
Spindle bearing
Spindle bearing B72..-C, adjusted, in pairs or sets, contact angle α = 15°, restricted tolerances
Replaces
B7228C.T.P4S.UL, B7228C.TPA.P4.UL
Product information



Metric
Imperial
Main Dimensions & Performance Data
d | 140 mm | Bore diameter |
D | 250 mm | Outside diameter |
B | 42 mm | Width |
Cr | 224.000 N | Basic dynamic load rating, radial |
C0r | 164.000 N | Basic static load rating, radial |
Cur | 12.500 N | Fatigue load limit, radial |
nG Grease | 5.000 1/min | Limiting speed for grease lubrication |
nG Oil | 7.500 1/min | Limiting speed for oil lubrication |
≈m | 7,736 kg | Weight |
Mounting dimensions
da | 163 mm | Diameter shaft shoulder |
da | h12 | Diameter shaft shoulder clearance |
Da | 226,5 mm | Shoulder diameter outer ring |
Da | H12 | Shoulder diameter outer ring clearance |
ra max | 2,5 mm | Maximum recess radius |
ra1 max | 2,5 mm | Maximum recess radius |
Etk min | 175,9 mm | Minimum diameter injection pitch |
Etk max | 187 mm | Maximum diameter injection pitch |
Etk1 min | 175,9 mm | Minimum diameter injection pitch |
Etk1 max | 187 mm | Maximum diameter injection pitch |
a | 47,1 mm | Distance between the apexes of the pressure cones |
Dimensions
rmin | 3 mm | Minimum chamfer dimension |
r1 min | 3 mm | Minimum chamfer dimension |
α | 15 ° | Contact angle |
Temperature range
Tmin | -30 °C | Operating temperature min. |
Tmax | 100 °C | Operating temperature max. |
Additional information
FV L | 1.353 N | Preload force light |
FV M | 4.185 N | Preload force medium |
FV H | 8.302 N | Preload force heavy |
KaE L | 4.158 N | Lift-off force light |
KaE M | 13.825 N | Lift-off force medium |
KaE H | 29.200 N | Lift-off force heavy |
ca L | 155 N/µm | Axial rigidity light |
ca M | 257 N/µm | Axial rigidity medium |
ca H | 362 N/µm | Axial rigidity heavy |