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 | 200 mm |
| D - External diameter | 420 mm |
| B - Bearing/Inner ring width | 138 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 363,1 mm |
| rs - Min fillet radius | 5 mm |
| Number of lubrication holes | 8 |
| b - Groove width | 21,07 mm |
| k - Hole diameter | 10 mm |
| Radial clearance class | C4 Special |
| Mass | 95 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 2830 kN |
| C0 - Static load | 3530 kN |
| Cu - Fatigue limit load | 302 kN |
| e - Coefficient | 0.31 |
| Y0 - Static axial load coefficient | 2.1 |
| Y1 - Lower axial load coefficient | 2.15 |
| Y2 - Upper axial load coefficient | 3.2 |
| N ref - Reference thermal speed | 1000 tr/min |
| N lim - Mechanical Limit Speed | 1500 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) | 7,561 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,439 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 5,964 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,982 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,42 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 220 mm |
| Da max - Max shoulder diameter OR | 400 mm |
| ra max - Max shaft & housing fillet radius | 4 mm |
