Spherical roller bearing, polyamide 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 | 75 mm |
| D - External diameter | 130 mm |
| B - Bearing/Inner ring width | 31 mm |
| d2 - External diameter inner ring | 88,4 mm |
| D1 - Inner diameter outer ring | 117,8 mm |
| rs - Min fillet radius | 1,5 mm |
| Number of lubrication holes | 3 |
| b - Groove width | 7,37 mm |
| k - Hole diameter | 3,5 mm |
| Radial clearance class | CN |
| Mass | 1,644 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 244 kN |
| C0 - Static load | 249 kN |
| Cu - Fatigue limit load | 29,9 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 | 4600 tr/min |
| N lim - Mechanical Limit Speed | 6200 tr/min |
| Tmin - Min operating temperature | -20 °C |
| Tmax - Max operating temperature | 120 °C |
| BEARING FREQUENCIES | |
|---|---|
| BPFO - Over rolling frequency on outer ring (60 rpm) | 8,127 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,873 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,707 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,354 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 | 84 mm |
| Da max - Max shoulder diameter OR | 121 mm |
| ra max - Max shaft & housing fillet radius | 1,5 mm |
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