Spherical roller bearing, polyamide 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 | 55 mm |
| D - External diameter | 120 mm |
| B - Bearing/Inner ring width | 43 mm |
| d2 - External diameter inner ring | 68,7 mm |
| D1 - Inner diameter outer ring | 102,9 mm |
| rs - Min fillet radius | 2 mm |
| Number of lubrication holes | 3 |
| b - Groove width | 7,83 mm |
| k - Hole diameter | 3,5 mm |
| Radial clearance class | C3 |
| Mass | 2,27 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 296 kN |
| C0 - Static load | 274 kN |
| Cu - Fatigue limit load | 33,4 kN |
| e - Coefficient | 0.36 |
| Y0 - Static axial load coefficient | 1.83 |
| Y1 - Lower axial load coefficient | 1.87 |
| Y2 - Upper axial load coefficient | 2.79 |
| N ref - Reference thermal speed | 4600 tr/min |
| N lim - Mechanical Limit Speed | 5600 tr/min |
| Tmin - Min operating temperature | -20 °C |
| Tmax - Max operating temperature | 120 °C |
| BEARING FREQUENCIES | |
|---|---|
| BPFO - Over rolling frequency on outer ring (60 rpm) | 5,61 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 8,39 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 4,703 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,352 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,401 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 66 mm |
| Da max - Max shoulder diameter OR | 109 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
