Spherical roller bearing for vibratory applications, one-piece machined cage, groove and lubrication holes on outer ring, special C4 class clearance
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 | 70 mm |
| D - External diameter | 150 mm |
| B - Bearing/Inner ring width | 51 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 128,7 mm |
| rs - Min fillet radius | 2,1 mm |
| Number of lubrication holes | 3 |
| b - Groove width | 10 mm |
| k - Hole diameter | 5 mm |
| Radial clearance class | C4 Special |
| Mass | 4,274 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 420 kN |
| C0 - Static load | 396 kN |
| Cu - Fatigue limit load | 46,7 kN |
| e - Coefficient | 0.34 |
| Y0 - Static axial load coefficient | 1.96 |
| Y1 - Lower axial load coefficient | 2 |
| Y2 - Upper axial load coefficient | 2.98 |
| N ref - Reference thermal speed | 3800 tr/min |
| N lim - Mechanical Limit Speed | 4500 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) | 5,611 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 8,389 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 4,723 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,362 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,401 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 82 mm |
| Da max - Max shoulder diameter OR | 138 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
