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 | 160 mm |
| D - External diameter | 290 mm |
| B - Bearing/Inner ring width | 80 mm |
| D1 - Inner diameter outer ring | 258,7 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 16,94 mm |
| k - Hole diameter | 8 mm |
| Radial clearance class | C4 |
| Mass | 23,2 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1220 kN |
| C0 - Static load | 1390 kN |
| Cu - Fatigue limit load | 132 kN |
| e - Coefficient | 0.25 |
| Y0 - Static axial load coefficient | 2.63 |
| Y1 - Lower axial load coefficient | 2.69 |
| Y2 - Upper axial load coefficient | 4 |
| N ref - Reference thermal speed | 2000 tr/min |
| N lim - Mechanical Limit Speed | 2800 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) | 7,597 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,403 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,174 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,087 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,422 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 174 mm |
| Da max - Max shoulder diameter OR | 276 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
