Spherical roller bearing, one-piece machined 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 | 150 mm |
| D - External diameter | 270 mm |
| B - Bearing/Inner ring width | 73 mm |
| D1 - Inner diameter outer ring | 241,1 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 15 mm |
| k - Hole diameter | 7 mm |
| Radial clearance class | C4 |
| Mass | 17,992 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1080 kN |
| C0 - Static load | 1220 kN |
| Cu - Fatigue limit load | 118 kN |
| e - Coefficient | 0.25 |
| Y0 - Static axial load coefficient | 2.68 |
| Y1 - Lower axial load coefficient | 2.74 |
| Y2 - Upper axial load coefficient | 4.08 |
| N ref - Reference thermal speed | 2200 tr/min |
| N lim - Mechanical Limit Speed | 3000 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) | 7,598 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 10,402 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 6,181 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,091 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,422 Hz |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 164 mm |
| Da max - Max shoulder diameter OR | 256 mm |
| ra max - Max shaft & housing fillet radius | 2,5 mm |
