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10:21:09 GMT+0000 (Coordinated Universal Time)
NNU4992-S-K-M-SP
Cylindrical roller bearing
Super precision cylindrical roller bearings NNU49..-S-K-M-SP, non-locating bearing, double row, with tapered bore, taper 1:12, separable, with cage
Product information
Main Dimensions & Performance Data
| d | 460 mm | Bore diameter |
| D | 620 mm | Outside diameter |
| B | 160 mm | Width |
| Cr | 2.110.000 N | Basic dynamic load rating, radial |
| C0r | 5.500.000 N | Basic static load rating, radial |
| Cur | 560.000 N | Fatigue load limit, radial |
| nG Grease | 1.120 1/min | Limiting speed for grease lubrication |
| nG Oil | 1.320 1/min | Limiting speed for oil lubrication |
| ≈m | 132,6 kg | Weight |
Mounting dimensions
| da | 506,8 mm | Diameter shaft shoulder |
h12 | Diameter shaft shoulder tolerance | |
| Da | 578 mm | Diameter of housing shoulder |
H12 | Diameter of housing shoulder tolerance | |
| ra1 max | 3 mm | Maximum recess radius |
Dimensions
| r1 min | 4 mm | Minimum chamfer dimension |
| F | 510 mm | Raceway diameter inner ring |
| ns | 17,7 mm | Width of lubricating groove |
| ds | 9,5 mm | Diameter lubrication hole |
| s | 6,8 mm | Axial displacement |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 150 °C | Operating temperature max. |