Rolling is a short cylindrical, conical or drum-type roller for rolling the body. Roller bearings are cylindrical roller to the heart, double row radial spherical roller, tapered roller and thrust roller and other structural types.
① Radial cylindrical roller bearings: roller length to diameter ratio of less than 2.5 column. Inside and outside the ring to allow relative movement of the large amount, can be installed, easy assembly and disassembly (both inside and outside the ring except the bearing ribs). This bearing can bear radial load, compared with the same size ball bearings, large carrying capacity. The deflection of the shaft is very sensitive, multi-axis for rigid large and require a good pair.
② Double row radial spherical roller bearings: rolling spherical roller. The midpoint of the outer ring raceway is the center of the spherical bearing, inside and outside the ring when the axis of deflection is large (1°~2.5°), the bearing can still work as usual, self-aligning performance. These bearings support and more commonly used in the deflection of the larger shaft, the main radial load to bear, but also can withstand a small amount of axial load.
③ tapered roller bearings: rolling of conical roller. Larger carrying capacity than ball bearings, can be subject to both radial and axial loads. Contact angle 11 ° ~ 26 ° between the contact angle can withstand a large axial load as well. Tapered roller bearing outer ring separable, easy installation, the gap needs to be adjusted. The most common single type, it can only afford a one-way axial load. Double row type can withstand axial load in both directions.
④ thrust roller bearings: mainly used to bear the axial load carrying capacity.
Bicycle bearing
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