Spherical roller bearing, with central rib on inner ring, one-piece machined cage centred on inner ring, 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.
Log in
To add this product to your basketDocumentation
Product information
| PRODUCT DEFINITION | |
|---|---|
| Brand | SNR |
| d - Internal diameter | 220 mm |
| D - External diameter | 370 mm |
| B - Bearing/Inner ring width | 150 mm |
| D1 - Inner diameter outer ring | 320,3 mm |
| rs - Min fillet radius | 4 mm |
| Number of lubrication holes | 3 ou 8 |
| b - Groove width | 15,9 mm |
| k - Hole diameter | 7 mm |
| Radial clearance class | C3 |
| Mass | 63,5 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 2600 kN |
| C0 - Static load | 3540 kN |
| Cu - Fatigue limit load | 311 kN |
| e - Coefficient | 0.39 |
| Y0 - Static axial load coefficient | 1.7 |
| Y1 - Lower axial load coefficient | 1.74 |
| Y2 - Upper axial load coefficient | 2.59 |
| N ref - Reference thermal speed | 850 tr/min |
| N lim - Mechanical Limit Speed | 1400 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) | 8,161 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,839 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,735 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,368 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,43 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 237 mm |
| Da max - Max shoulder diameter OR | 353 mm |
| ra max - Max shaft & housing fillet radius | 3 mm |
