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 is getting sub-ranges dedicated to requirements of speed, sealing, specific greasing, etc.
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Product information
| PRODUCT DEFINITION | |
|---|---|
| Brand | SNR |
| d - Internal diameter | 100 mm |
| D - External diameter | 180 mm |
| B - Bearing/Inner ring width | 34 mm |
| d1 - External diameter inner ring | 127,3 mm |
| D1 - Inner diameter outer ring | 153 mm |
| D2 - Inner diameter outer ring | 168 mm |
| a - Charge load application point | 50 mm |
| α - Contact angle | 25 ° |
| rs - Min fillet radius | 2,1 mm |
| r1s - Min fillet radius | 1,1 mm |
| Precision class | P4 |
| Mass | 3,23 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 141 kN |
| C0 - Static load | 121 kN |
| Cu - Fatigue limit load | 5,7 kN |
| f0 - Coefficient | 14.821 |
| Axial displacement K Factor | 0.5 |
| Preload level | 7 |
| Preload value | 1,4 kN |
| Axial rigidity | 320 N/µm |
| Radial rigidity | 682 N/µm |
| Tmin - Min operating temperature | -30 °C |
| Tmax - Max operating temperature | 120 °C |
| N lim - Oil lubrication limit speed | 10500 tr/min |
| N lim - Grease lubrication limit speed | 6800 tr/min |
| BEARING FREQUENCIES | |
|---|---|
| BPFO - Over rolling frequency on outer ring (60 rpm) | 5,849 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 8,151 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 5,363 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,682 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,418 Hz |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 112 mm |
| db min - Min IR shoulder diameter | 112 mm |
| Da max - Max shoulder diameter OR | 168 mm |
| Db max - Max OR shoulder diameter | 168 mm |
| r1a - Max fillet radius | 1 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
