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 | 160 mm |
| D - External diameter | 290 mm |
| B - Bearing/Inner ring width | 104 mm |
| D1 - Inner diameter outer ring | 253,7 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 | C3 |
| Mass | 29,58 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1550 kN |
| C0 - Static load | 1890 kN |
| Cu - Fatigue limit load | 180 kN |
| e - Coefficient | 0.33 |
| Y0 - Static axial load coefficient | 1.98 |
| Y1 - Lower axial load coefficient | 2.03 |
| Y2 - Upper axial load coefficient | 3.02 |
| N ref - Reference thermal speed | 1400 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) | 7,606 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,394 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,151 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,076 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,423 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 174 mm |
| Da max - Max shoulder diameter OR | 276 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
