Spherical roller bearing, pressed steel cage
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 | 30 mm |
| D - External diameter | 72 mm |
| B - Bearing/Inner ring width | 19 mm |
| d2 - External diameter inner ring | 40,8 mm |
| D1 - Inner diameter outer ring | 59,7 mm |
| rs - Min fillet radius | 1,1 mm |
| Number of lubrication holes | 0 |
| b - Groove width | 0 mm |
| k - Hole diameter | 0 mm |
| Radial clearance class | CN |
| Mass | 0,394 kg |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 64,6 kN |
| C0 - Static load | 52,1 kN |
| Cu - Fatigue limit load | 6,1 kN |
| e - Coefficient | 0.28 |
| Y0 - Static axial load coefficient | 2.39 |
| Y1 - Lower axial load coefficient | 2.45 |
| Y2 - Upper axial load coefficient | 3.64 |
| N ref - Reference thermal speed | 7800 tr/min |
| N lim - Mechanical Limit Speed | 12000 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) | 4,856 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 7,144 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 4,973 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,487 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,405 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 0 mm |
| da min - Min shoulder diameter IR | 37 mm |
| Da max - Max shoulder diameter OR | 65 mm |
| ra max - Max shaft & housing fillet radius | 1 mm |
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