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 | NTN |
| d - Internal diameter | 300 mm |
| D - External diameter | 420 mm |
| B - Bearing/Inner ring width | 90 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 387 mm |
| rs - Min fillet radius | 3 mm |
| Number of lubrication holes | 8 |
| b - Groove width | 14 mm |
| k - Hole diameter | 8 mm |
| Radial clearance class | C3 |
| Mass | 40,1 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 1600 kN |
| C0 - Static load | 2620 kN |
| Cu - Fatigue limit load | 145 kN |
| e - Coefficient | 0.2 |
| Y0 - Static axial load coefficient | 3.34 |
| Y1 - Lower axial load coefficient | 3.42 |
| Y2 - Upper axial load coefficient | 5.09 |
| N lim - Oil lubrication limit speed | 1140 tr/min |
| N lim - Grease lubrication limit speed | 890 tr/min |
| Tmin - Min operating temperature | -40 °C |
| Tmax - Max operating temperature | 200 °C |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 313 mm |
| Da max - Max shoulder diameter OR | 407 mm |
| ra max - Max shaft & housing fillet radius | 3 mm |
