Tapered roller bearings are one of the 10 categories. In Sunspeed, tapered roller bearings include 30200 series tapered roller bearings, 31300 series tapered roller bearings, 32000 series tapered roller bearings, 32200 series tapered roller bearings, 32300 series tapered roller bearings, 33000 series tapered roller bearings and 33200 series tapered roller bearings. Each type of bearing has its own dimensions. The following picture is the examples.
The inner and outer ring raceways are segments of cones and the rollers are tapered so that the conical surfaces of the raceways, and the roller axes, if projected, would all meet at a common point on the main axis of the bearing. This geometry makes the motion of the cones remain coaxial, with no sliding motion between the raceways and the outside diameter of the rollers.
This conical geometry creates a linear contact patch which permits greater loads to be carried than with spherical (ball) bearings, which have point contact. The geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the contact patch.The larger the half angles of these cones the larger the axial force that the bearing can sustain.
Tapered roller bearings are separable into a cone assembly and a cup. The non-separable cone assembly consists of the inner ring, the rollers, and a cage that retains and evenly spaces the rollers. The cup is simply the outer ring.
Tapered roller bearings are commonly used for moderate speed, heavy duty applications where durability is required. Common applications are in agriculture, construction and mining equipment, sports robot combat, axle systems, gear box, engine motors and reducers, propeller shaft, railroad axle-box, differential, wind turbines, etc.
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