Spherical roller bearing, with central rib on inner ring, 2-part machined cage centred on inner ring, groove and lubrication holes on outer ring, tapered bore 1:12
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 | 150 mm |
| d2 - External diameter inner ring | 0 mm |
| D1 - Inner diameter outer ring | 561,4 mm |
| rs - Min fillet radius | 5 mm |
| Number of lubrication holes | 8 |
| b - Groove width | 20 mm |
| k - Hole diameter | 12 mm |
| Associated sleeve reference | H3084 |
| Radial clearance class | CN |
| Mass | 152 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 3450 kN |
| C0 - Static load | 6400 kN |
| Cu - Fatigue limit load | 475 kN |
| e - Coefficient | 0.24 |
| Y0 - Static axial load coefficient | 2.78 |
| Y1 - Lower axial load coefficient | 2.85 |
| Y2 - Upper axial load coefficient | 4.24 |
| N lim - Oil lubrication limit speed | 640 tr/min |
| N lim - Grease lubrication limit speed | 490 tr/min |
| Tmin - Min operating temperature | -40 °C |
| Tmax - Max operating temperature | 120 °C |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 438 mm |
| db - Min diameter for Sleeve | 437 mm |
| Ce - Min length fro Sleeve | 16 mm |
| Da max - Max shoulder diameter OR | 602 mm |
| ra max - Max shaft & housing fillet radius | 4 mm |
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