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 DEFINITION | |
|---|---|
| Brand | SNR |
| d - Internal diameter | 220 mm |
| D - External diameter | 340 mm |
| B - Bearing/Inner ring width | 90 mm |
| D1 - Inner diameter outer ring | 310 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 8 |
| b - Groove width | 15,37 mm |
| k - Hole diameter | 7 mm |
| Radial clearance class | C4 |
| Mass | 31,8 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1530 kN |
| C0 - Static load | 2110 kN |
| Cu - Fatigue limit load | 188 kN |
| e - Coefficient | 0.23 |
| Y0 - Static axial load coefficient | 2.89 |
| Y1 - Lower axial load coefficient | 2.95 |
| Y2 - Upper axial load coefficient | 4.4 |
| N ref - Reference thermal speed | 1600 tr/min |
| N lim - Mechanical Limit Speed | 2100 tr/min |
| Tmin - Min operating temperature | -40 °C |
| Tmax - Max operating temperature | 200 °C |
| BEARING FREQUENCIES | |
|---|---|
| BPFO - Characteristic outer ring frequency (60 rpm) | 10,615 Hz |
| BPFI - Characteristic inner ring frequency (60 rpm) | 13,385 Hz |
| FTF - Characteristic cage frequency (60 rpm) | 0,442 Hz |
| BSF - Characteristic rolling element frequency (60 rpm) | 8,449 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 232,4 mm |
| Da max - Max shoulder diameter OR | 327,6 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
