High precision angular contact ball bearing, sealed series ML, 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 | 10 mm |
| D - External diameter | 26 mm |
| B - Bearing/Inner ring width | 8 mm |
| d1 - External diameter inner ring | 14,65 mm |
| d2 - External diameter inner ring | 13,55 mm |
| D1 - Inner diameter outer ring | 20,95 mm |
| D2 - Inner diameter outer ring | 21,75 mm |
| a - Charge load application point | 7 mm |
| α - Contact angle | 17 ° |
| rs - Min fillet radius | 0,3 mm |
| r1s - Min fillet radius | 0,3 mm |
| Precision class | P4S |
| Mass | 0,018 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 2,02 kN |
| C0 - Static load | 0,78 kN |
| Cu - Fatigue limit load | 0,05 kN |
| f0 - Coefficient | 7.384 |
| Axial displacement K Factor | 2.52 |
| Preload level | 7 |
| Preload value | 0,01 kN |
| Axial rigidity | 12 N/µm |
| Radial rigidity | 61 N/µm |
| Tmin - Min operating temperature | -20 °C |
| Tmax - Max operating temperature | 120 °C |
| N lim - Grease lubrication limit speed | 89000 tr/min |
| BEARING FREQUENCIES | |
|---|---|
| BPFO - Over rolling frequency on outer ring (60 rpm) | 4,518 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 6,482 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 5,184 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,592 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,411 Hz |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 12,5 mm |
| db min - Min IR shoulder diameter | 12,5 mm |
| Da max - Max shoulder diameter OR | 23,5 mm |
| Db max - Max OR shoulder diameter | 23,5 mm |
| r1a - Max fillet radius | 0,3 mm |
| ra max - Max shaft & housing fillet radius | 0,3 mm |
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