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 | 220 mm |
| D - External diameter | 400 mm |
| B - Bearing/Inner ring width | 108 mm |
| D1 - Inner diameter outer ring | 357,7 mm |
| rs - Min fillet radius | 4 mm |
| Number of lubrication holes | 3 ou 8 |
| b - Groove width | 20,56 mm |
| k - Hole diameter | 11 mm |
| Radial clearance class | C4 |
| Mass | 59,474 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 2210 kN |
| C0 - Static load | 2690 kN |
| Cu - Fatigue limit load | 232 kN |
| e - Coefficient | 0.25 |
| Y0 - Static axial load coefficient | 2.68 |
| Y1 - Lower axial load coefficient | 2.74 |
| Y2 - Upper axial load coefficient | 4.08 |
| N ref - Reference thermal speed | 1300 tr/min |
| N lim - Mechanical Limit Speed | 2000 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) | 8,058 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,942 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,353 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,177 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,424 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 237 mm |
| Da max - Max shoulder diameter OR | 383 mm |
| ra max - Max shaft & housing fillet radius | 3 mm |
