Spherical roller bearing, pressed steel 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 | 120 mm |
| D - External diameter | 200 mm |
| B - Bearing/Inner ring width | 62 mm |
| d2 - External diameter inner ring | 138,9 mm |
| D1 - Inner diameter outer ring | 178,4 mm |
| rs - Min fillet radius | 2 mm |
| Number of lubrication holes | 3 |
| b - Groove width | 10,04 mm |
| k - Hole diameter | 4,5 mm |
| Radial clearance class | C4 |
| Mass | 7,76 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 663 kN |
| C0 - Static load | 820 kN |
| Cu - Fatigue limit load | 86,3 kN |
| e - Coefficient | 0.28 |
| Y0 - Static axial load coefficient | 2.37 |
| Y1 - Lower axial load coefficient | 2.43 |
| Y2 - Upper axial load coefficient | 3.61 |
| N ref - Reference thermal speed | 2600 tr/min |
| N lim - Mechanical Limit Speed | 3200 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) | 9,141 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 11,859 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 7,468 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,734 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,435 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 131 mm |
| Da max - Max shoulder diameter OR | 189 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
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