Spherical roller bearing for vibratory applications, one-piece machined cage, groove and lubrication holes on outer ring, special C4 class clearance
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 | 130 mm |
| D - External diameter | 280 mm |
| B - Bearing/Inner ring width | 93 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 243 mm |
| rs - Min fillet radius | 4 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 18,94 mm |
| k - Hole diameter | 9 mm |
| Radial clearance class | C4 Special |
| Mass | 27,9 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1330 kN |
| C0 - Static load | 1400 kN |
| Cu - Fatigue limit load | 136 kN |
| e - Coefficient | 0.33 |
| Y0 - Static axial load coefficient | 2.01 |
| Y1 - Lower axial load coefficient | 2.06 |
| Y2 - Upper axial load coefficient | 3.06 |
| N ref - Reference thermal speed | 1800 tr/min |
| N lim - Mechanical Limit Speed | 2400 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) | 6,076 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 8,924 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 4,961 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,481 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,405 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 147 mm |
| Da max - Max shoulder diameter OR | 263 mm |
| ra max - Max shaft & housing fillet radius | 3 mm |
