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 | 180 mm |
| D - External diameter | 250 mm |
| B - Bearing/Inner ring width | 52 mm |
| rs - Min fillet radius | 2 mm |
| Number of lubrication holes | 4 |
| b - Groove width | 9 mm |
| k - Hole diameter | 5 mm |
| Radial clearance class | CN |
| Mass | 7,95 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 573 kN |
| C0 - Static load | 869 kN |
| Cu - Fatigue limit load | 57,2 kN |
| e - Coefficient | 0.17 |
| Y0 - Static axial load coefficient | 3.81 |
| Y1 - Lower axial load coefficient | 3.9 |
| Y2 - Upper axial load coefficient | 5.81 |
| N lim - Oil lubrication limit speed | 1800 tr/min |
| N lim - Grease lubrication limit speed | 1400 tr/min |
| Tmin - Min operating temperature | -40 °C |
| Tmax - Max operating temperature | 200 °C |
| ABUTMENT | |
|---|---|
| da min - Min shoulder diameter IR | 188,8 mm |
| Da max - Max shoulder diameter OR | 241,2 mm |
| ra max - Max shaft & housing fillet radius | 2 mm |
