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 | 240 mm |
| D - External diameter | 400 mm |
| B - Bearing/Inner ring width | 128 mm |
| D1 - Inner diameter outer ring | 355,3 mm |
| rs - Min fillet radius | 4 mm |
| Number of lubrication holes | 3 ou 8 |
| b - Groove width | 19,63 mm |
| k - Hole diameter | 9 mm |
| Radial clearance class | C3 |
| Mass | 64,72 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 2510 kN |
| C0 - Static load | 3500 kN |
| Cu - Fatigue limit load | 299 kN |
| e - Coefficient | 0.29 |
| Y0 - Static axial load coefficient | 2.26 |
| Y1 - Lower axial load coefficient | 2.32 |
| Y2 - Upper axial load coefficient | 3.45 |
| N ref - Reference thermal speed | 1100 tr/min |
| N lim - Mechanical Limit Speed | 1600 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) | 9,576 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 12,424 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 7,457 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 3,729 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 | 257 mm |
| Da max - Max shoulder diameter OR | 383 mm |
| ra max - Max shaft & housing fillet radius | 3 mm |
