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 | 180 mm |
| D - External diameter | 300 mm |
| B - Bearing/Inner ring width | 96 mm |
| D1 - Inner diameter outer ring | 266,8 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 14,85 mm |
| k - Hole diameter | 7 mm |
| Radial clearance class | CN |
| Mass | 27,21 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1490 kN |
| C0 - Static load | 1960 kN |
| Cu - Fatigue limit load | 183 kN |
| e - Coefficient | 0.29 |
| Y0 - Static axial load coefficient | 2.26 |
| Y1 - Lower axial load coefficient | 2.32 |
| Y2 - Upper axial load coefficient | 3.45 |
| 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 - Over rolling frequency on outer ring (60 rpm) | 9,105 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 11,895 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 7,257 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,629 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,434 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 194 mm |
| Da max - Max shoulder diameter OR | 286 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
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