Spherical roller bearing, with central rib on inner ring, pressed steel 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 | 190 mm |
| D - External diameter | 320 mm |
| B - Bearing/Inner ring width | 128 mm |
| d2 - External diameter inner ring | 214,537 mm |
| D1 - Inner diameter outer ring | 276,4 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 8 |
| b - Groove width | 16,642 mm |
| k - Hole diameter | 8 mm |
| Radial clearance class | C4 |
| Mass | 40,68 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1830 kN |
| C0 - Static load | 2580 kN |
| Cu - Fatigue limit load | 236 kN |
| e - Coefficient | 0.37 |
| Y0 - Static axial load coefficient | 1.8 |
| Y1 - Lower axial load coefficient | 1.84 |
| Y2 - Upper axial load coefficient | 2.74 |
| N ref - Reference thermal speed | 1100 tr/min |
| N lim - Mechanical Limit Speed | 1600 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) | 9,175 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 11,825 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 7,573 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,787 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,437 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 204 mm |
| Da max - Max shoulder diameter OR | 306 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
