30208 J2/Q [SKF] Tapered roller bearing - 40 X 80 X 19.75 MM
Manufacturer designation:
30208 J2/Q.
Designation via standards:
30208 - DIN 720, ISO 355.
Design:
The bearing consists of two rings (inner and outer) and rolling elements (tapered rollers) which are connected by a cage. The inner ring with a cage and rolling elements is a CONE. The outer ring is a CUP.
The design of tapered roller bearings suites for the perception of combined (radial and axial) loads. Tapered roller bearings have a split construction: the inner ring with the rollers and separator create the unit, that can be mounted separately from the outer ring.
Features:
Metric dimensions.
Weight , W | kg | 0.4 |
---|---|---|
Bore diameter , d | mm | 40 |
Outside diameter , D | mm | 80 |
Total width , T | mm | 19.75 |
Cage width , C | mm | 16 |
Inner cage width in mm , B | mm | 18 |
Basic static load rating , Co | kN | 68 |
Basic dynamic load rating , C | kN | 75.8 |
Limiting speed , Nlim | RPM | 8500 |
Contact angle , a | ° | 14.036 |
Reference speed , Nref | RPM | 7000 |