Spherical roller bearing, one-piece machined cage, groove and lubrication holes on outer ring
The spherical roller bearing withstands significant loads and misalignments. This type of roller bearing is well adapted to harsh operating conditions: impacts or vibrations (crushers, vibrating screens, heavy handling, etc.). With the ULTAGE design, NTN offers as standard, unsurpassed endurance and longevity.
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Product information
| PRODUCT DEFINITION | |
|---|---|
| Brand | SNR |
| d - Internal diameter | 120 mm |
| D - External diameter | 260 mm |
| B - Bearing/Inner ring width | 86 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 224 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 17,98 mm |
| k - Hole diameter | 8 mm |
| Radial clearance class | C3 |
| Mass | 22,6 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1170 kN |
| C0 - Static load | 1280 kN |
| Cu - Fatigue limit load | 127 kN |
| e - Coefficient | 0.32 |
| Y0 - Static axial load coefficient | 2.04 |
| Y1 - Lower axial load coefficient | 2.09 |
| Y2 - Upper axial load coefficient | 3.11 |
| N ref - Reference thermal speed | 2000 tr/min |
| N lim - Mechanical Limit Speed | 2500 tr/min |
| Tmin - Min operating temperature | -40 °C |
| Tmax - Max operating temperature | 200 °C |
| BEARING FREQUENCIES | |
|---|---|
| BPFO - Over rolling frequency on outer ring (60 rpm) | 6,578 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 9,422 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 5,328 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,664 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,411 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 134 mm |
| Da max - Max shoulder diameter OR | 246 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
