In the ball bearing and high precision bearing ranges, the high precision angular contact ball bearing solves the maximum reliability constraints with increased performance in terms of rigidity, speed, capacity and precision. This bearing is recommended for demanding applications in terms of precision such as machine tool spindles. NTN is getting sub-ranges dedicated to requirements of speed, sealing, specific greasing, etc.
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PRODUCT DEFINITION | |
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Brand | SNR |
d - Internal diameter | 200 mm |
D - External diameter | 280 mm |
B - Bearing/Inner ring width | 38 mm |
d1 - External diameter inner ring | 225,7 mm |
D1 - Inner diameter outer ring | 254,326 mm |
D2 - Inner diameter outer ring | 266,583 mm |
a - Charge load application point | 51 mm |
α - Contact angle | 15 ° |
rs - Min fillet radius | 2,1 mm |
r1s - Min fillet radius | 1 mm |
Precision class | P4 |
Mass | 6,16 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 189 kN |
C0 - Static load | 244 kN |
Cu - Fatigue limit load | 8,3 kN |
f0 - Coefficient | 16.498 |
Axial displacement K Factor | 0.69 |
Preload level | 7 |
Preload value | 1,65 kN |
Axial rigidity | 262 N/µm |
Radial rigidity | 1460 N/µm |
Tmin - Min operating temperature | -30 °C |
Tmax - Max operating temperature | 120 °C |
Nlim - Oil lubrication limit speed | 7300 tr/min |
Nlim - Grease lubrication limit speed | 4800 tr/min |
BEARING FREQUENCIES | |
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BPFO - Characteristic outer ring frequency (60 rpm) | 12,206 Hz |
BPFI - Characteristic inner ring frequency (60 rpm) | 14,794 Hz |
FTF - Characteristic cage frequency (60 rpm) | 0,452 Hz |
BSF - Characteristic rolling element frequency (60 rpm) | 9,986 Hz |
ABUTMENT | |
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da min - Min shoulder diameter IR | 212 mm |
db min - Min IR shoulder diameter | 212 mm |
Da max - Max shoulder diameter OR | 268 mm |
Db max - Max OR shoulder diameter | 268 mm |
r1a - Max fillet radius | 1 mm |
ra max - Max shaft & housing fillet radius | 2 mm |
![Calcul factors image](https://eshop-api.ntn-snr.com/medias/HPACBB-EN.jpg?context=bWFzdGVyfHJvb3R8OTUxOTB8aW1hZ2UvanBlZ3xoODYvaDQ4Lzg5Mzc2OTI2NTk3NDIvSFBBQ0JCX0VOLmpwZ3xhY2JkNDFiODhmZTM0YTdhOTkzODM4Nzg1Nzk2ZmU2MmQ3YzcwYjFkNGQ4NGVlODEzN2IyZjg4OGUwYWE5MjZm)