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NNU49/670B/SPW33X super precision cylindrical roller bearing 670*900*230
| Designation | NNU 49/670 B/SPW33X | |
| Category | ||
| Cylindrical roller bearings, double row, super-precision | ||
| Dimensions | ||
| d (Bore diameter) | 670 mm | 26.378 in |
| D (Outer diameter) | 900 mm | 35.433 in |
| B (Width) | 230 mm | 9.055 in |
| W (Weight) | 410 kg | 904 lbs |
| Technical Data | ||
| Cr (kN) Basic dynamic load rating | 4950 | |
| C0r (kN) Basic static load rating | 13700 | |
| Fatigue load limit (kN) | 930 | |
| Attainable speed for grease lubrication (r/min) | 700 | |
| Attainable speed for oil-air lubrication (r/min) | 600 | |
| Reference grease quantity (cm3) | 600 | |
| Internal design | B= Modified internal design | |
| Lubrication | Annular groove and three lubrication holes in the outer ring | |
| Precision | SP | |
NNU.49/670.B/SPW33X cylindrical roller bearing
| Designation | Principal dimensions | Basic load ratings | Attainable speeds | ||||
| dynamic | static | Grease lubrication | Oil-air lubrication | ||||
| d[mm] | D[mm] | B[mm] | C[kN] | C0[kN] | [r/min] | [r/min] | |
| NNU 49/500 B/SPW33X | 500 | 670 | 170 | 2 330 | 6 100 | 950 | 1 100 |
| NNU 49/500 BK/SPW33X | 500 | 670 | 170 | 2 330 | 6 100 | 950 | 1 100 |
| NNU 49/600 BK/SPW33X | 600 | 800 | 200 | 3 580 | 10 200 | 800 | 670 |
| NNU 49/670 B/SPW33X | 670 | 900 | 230 | 4 950 | 13 700 | 700 | 600 |
| NNU 49/670 BK/SPW33X | 670 | 900 | 230 | 4 950 | 13 700 | 700 | 600 |
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