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10:06:43 GMT+0000 (Coordinated Universal Time)
NNU4944-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
Metric
Imperial
Main Dimensions & Performance Data
d | 220 mm | Bore diameter |
D | 300 mm | Outside diameter |
B | 80 mm | Width |
Cr | 510.000 N | Basic dynamic load rating, radial |
C0r | 1.140.000 N | Basic static load rating, radial |
Cur | 133.000 N | Fatigue load limit, radial |
nG Grease | 2.550 1/min | Limiting speed for grease lubrication |
nG Oil | 3.000 1/min | Limiting speed for oil lubrication |
≈m | 14,79 kg | Weight |
Mounting dimensions
da | 243 mm | diameter shaft shoulder |
h12 | diameter shaft shoulder tolerance | |
Da | 279 mm | diameter of housing shoulder |
H12 | diameter of housing shoulder tolerance | |
ra1 max | 2,1 mm | Maximum recess radius |
Dimensions
r1 min | 2,1 mm | Minimum chamfer dimension |
F | 245 mm | Raceway diameter inner ring |
ns | 12,2 mm | Width of lubricating groove |
ds | 6,3 mm | Diameter lubrication hole |
s | 4,3 mm | Axial displacement |
Temperature range
Tmin | -30 °C | Operating temperature min. |
Tmax | 150 °C | Operating temperature max. |