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 | 170 mm |
| D - External diameter | 310 mm |
| B - Bearing/Inner ring width | 86 mm |
| D1 - Inner diameter outer ring | 276,4 mm |
| rs - Min fillet radius | 4 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 17,98 mm |
| k - Hole diameter | 8 mm |
| Radial clearance class | C4 |
| Mass | 28,177 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1400 kN |
| C0 - Static load | 1610 kN |
| Cu - Fatigue limit load | 150 kN |
| e - Coefficient | 0.26 |
| Y0 - Static axial load coefficient | 2.54 |
| Y1 - Lower axial load coefficient | 2.6 |
| Y2 - Upper axial load coefficient | 3.87 |
| N ref - Reference thermal speed | 1900 tr/min |
| N lim - Mechanical Limit Speed | 2700 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) | 7,584 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,416 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,106 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,053 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,421 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 187 mm |
| Da max - Max shoulder diameter OR | 293 mm |
| ra max - Max shaft & housing fillet radius | 3 mm |
