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 | 170 mm |
| D - External diameter | 260 mm |
| B - Bearing/Inner ring width | 67 mm |
| d2 - External diameter inner ring | 191,8 mm |
| D1 - Inner diameter outer ring | 237,4 mm |
| rs - Min fillet radius | 2,1 mm |
| Number of lubrication holes | 3 ou 4 |
| b - Groove width | 12 mm |
| k - Hole diameter | 5 mm |
| Radial clearance class | C2 |
| Mass | 13 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 914 kN |
| C0 - Static load | 1240 kN |
| Cu - Fatigue limit load | 120 kN |
| e - Coefficient | 0.22 |
| Y0 - Static axial load coefficient | 3.01 |
| Y1 - Lower axial load coefficient | 3.07 |
| Y2 - Upper axial load coefficient | 4.58 |
| N ref - Reference thermal speed | 2200 tr/min |
| N lim - Mechanical Limit Speed | 2700 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) | 11,115 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 13,886 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 8,817 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 4,409 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,445 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 180,2 mm |
| Da max - Max shoulder diameter OR | 249,8 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
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