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 | 80 mm |
| D - External diameter | 140 mm |
| B - Bearing/Inner ring width | 33 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 126,7 mm |
| rs - Min fillet radius | 2 mm |
| Number of lubrication holes | 3 |
| b - Groove width | 7,87 mm |
| k - Hole diameter | 3,5 mm |
| Radial clearance class | C4 Special |
| Mass | 2,071 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 267 kN |
| C0 - Static load | 272 kN |
| Cu - Fatigue limit load | 32 kN |
| e - Coefficient | 0.22 |
| Y0 - Static axial load coefficient | 3.06 |
| Y1 - Lower axial load coefficient | 3.13 |
| Y2 - Upper axial load coefficient | 4.67 |
| N ref - Reference thermal speed | 4300 tr/min |
| N lim - Mechanical Limit Speed | 5800 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) | 7,695 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,305 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,684 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,342 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,428 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 91 mm |
| Da max - Max shoulder diameter OR | 129 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
