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 | 105 mm |
| D - External diameter | 160 mm |
| B - Bearing/Inner ring width | 26 mm |
| d1 - External diameter inner ring | 122,8 mm |
| D1 - Inner diameter outer ring | 142,2 mm |
| D2 - Inner diameter outer ring | 149,84 mm |
| a - Charge load application point | 44 mm |
| α - Contact angle | 25 ° |
| rs - Min fillet radius | 2 mm |
| r1s - Min fillet radius | 1 mm |
| Precision class | P4 |
| Mass | 1,61 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 78 kN |
| C0 - Static load | 81,4 kN |
| Cu - Fatigue limit load | 4 kN |
| f0 - Coefficient | 16.195 |
| Axial displacement K Factor | 0.42 |
| Preload level | 7 |
| Preload value | 0,69 kN |
| Axial rigidity | 294 N/µm |
| Radial rigidity | 631 N/µm |
| Tmin - Min operating temperature | -30 °C |
| Tmax - Max operating temperature | 120 °C |
| N lim - Oil lubrication limit speed | 12000 tr/min |
| N lim - Grease lubrication limit speed | 7900 tr/min |
| BEARING FREQUENCIES | |
|---|---|
| BPFO - Over rolling frequency on outer ring (60 rpm) | 9,806 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 12,194 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 8,248 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 4,124 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,446 Hz |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 115 mm |
| db min - Min IR shoulder diameter | 115 mm |
| Da max - Max shoulder diameter OR | 150 mm |
| Db max - Max OR shoulder diameter | 150 mm |
| r1a - Max fillet radius | 1 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
