Spherical roller bearing, with central rib on inner ring, one-piece machined cage centred on inner ring, 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 | 200 mm |
| D - External diameter | 340 mm |
| B - Bearing/Inner ring width | 140 mm |
| D1 - Inner diameter outer ring | 291 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 8 |
| b - Groove width | 16,98 mm |
| k - Hole diameter | 8 mm |
| Radial clearance class | C4 |
| Mass | 51,3 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 2130 kN |
| C0 - Static load | 2930 kN |
| Cu - Fatigue limit load | 265 kN |
| e - Coefficient | 0.39 |
| Y0 - Static axial load coefficient | 1.7 |
| Y1 - Lower axial load coefficient | 1.74 |
| Y2 - Upper axial load coefficient | 2.59 |
| N ref - Reference thermal speed | 1000 tr/min |
| N lim - Mechanical Limit Speed | 1500 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) | 8,652 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 11,349 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 7,049 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,525 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,433 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 214 mm |
| Da max - Max shoulder diameter OR | 326 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
