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 | 140 mm |
| D - External diameter | 250 mm |
| B - Bearing/Inner ring width | 88 mm |
| d2 - External diameter inner ring | 162,6 mm |
| D1 - Inner diameter outer ring | 219,6 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 12,64 mm |
| k - Hole diameter | 6 mm |
| Radial clearance class | C3 |
| Mass | 17,92 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1140 kN |
| C0 - Static load | 1370 kN |
| Cu - Fatigue limit load | 136 kN |
| e - Coefficient | 0.33 |
| Y0 - Static axial load coefficient | 2.01 |
| Y1 - Lower axial load coefficient | 2.06 |
| Y2 - Upper axial load coefficient | 3.06 |
| N ref - Reference thermal speed | 1700 tr/min |
| N lim - Mechanical Limit Speed | 2400 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) | 7,628 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,372 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,258 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,129 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,424 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 154 mm |
| Da max - Max shoulder diameter OR | 236 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
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