High precision angular contact ball bearing, laminated resin cage centred on outer ring
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-SNR is getting under ranges dedicated to requirements of speed, sealing, specific greasing, etc.
CAD file
Technical datasheet
Specs
PRODUCT DIMENSIONS | |
|---|---|
| Internal diameter (d) | 50 mm |
| External diameter (D) | 72 mm |
| Bearing/Inner ring width (B) | 12 mm |
| External diameter inner ring d1 | 56,8 mm |
| Inner diameter outer ring (D1) | 65,2 mm |
| Inner diameter outer ring D2 | 68,02 mm |
| Charge load application point a | 20 mm |
| Contact angle α | 25 ° |
| Min fillet radius (rs) | 0,6 mm |
| Min fillet radius r1s | 0,3 mm |
| Coefficient f0 | 16.534 |
| Precision class | P4 |
| Mass | 0,129 kg |
| Brand | SNR |
PRODUCT PERFORMANCE | |
|---|---|
| Dynamic load (C) | 14 kN |
| Static load (C0) | 12,7 kN |
| Fatigue limit load (Cu) | 0,72 kN |
| Axial displacement K Factor | 0.6 |
| Preload level | 8 |
| Preload value | 370000 kN |
| Axial rigidity | 179 N/µm |
| Radial rigidity | 355 N/µm |
| Min operating temperature (Tmin) | -30 °C |
| Max operating temperature (Tmax) | 120 °C |
| Nlim (oil) | 26000 tr/min |
| Nlim (grease) | 17000 tr/min |
| Characteristic cage frequency, FTF | 0,453 Hz |
| Characteristic rolling element frequency, BSF | 9,521 Hz |
| Characteristic outer ring frequency, BPF0 | 9,509 Hz |
| Characteristic inner ring frequency, BPFI | 11,491 Hz |
ABUTMENT | |
|---|---|
| Min shoulder diameter IR (da min) | 54,5 mm |
| Min IR shoulder diameter (db min) | 54,5 mm |
| Max shoulder diameter OR (Da max) | 67,5 mm |
| Max OR shoulder diameter (Db max) | 67,5 mm |
| Maxi fillet radius r1a | 0,3 mm |
| Max shaft & housing fillet radius (ra max) | 0,6 mm |
