Spherical roller bearing, with central rib on inner ring, 2-part machined cage centred on inner ring, 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 | 420 mm |
| D - External diameter | 620 mm |
| B - Bearing/Inner ring width | 200 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 550,1 mm |
| rs - Min fillet radius | 5 mm |
| Number of lubrication holes | 8 |
| b - Groove width | 27 mm |
| k - Hole diameter | 16 mm |
| Radial clearance class | C3 |
| Mass | 207 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 4300 kN |
| C0 - Static load | 8450 kN |
| Cu - Fatigue limit load | 470 kN |
| e - Coefficient | 0.32 |
| Y0 - Static axial load coefficient | 2.09 |
| Y1 - Lower axial load coefficient | 2.13 |
| Y2 - Upper axial load coefficient | 3.18 |
| N lim - Oil lubrication limit speed | 570 tr/min |
| N lim - Grease lubrication limit speed | 440 tr/min |
| Tmin - Min operating temperature | -40 °C |
| Tmax - Max operating temperature | 120 °C |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 438 mm |
| Da max - Max shoulder diameter OR | 602 mm |
| ra max - Max shaft & housing fillet radius | 4 mm |
