Metric thrust bearings are special bearings used to withstand axial forces, that is, the direction of the shaft parallel to the force of the bearing. Thrust bearings are also called thrust bearings
Thrust ball bearings are also divided into thrust ball bearings and thrust angular contact ball bearings. By the gasket with raceway and ball and cage assembly with the shaft with the raceway ring is called the shaft ring, with the shell with the raceway ring is called the seat ring. Two-way bearings will be in the circle with the shaft with. Single-way bearing can bear one-way axial load, two-way bearing can bear two-way axial load. The mounting surface of the seat ring is a spherical bearing with spherical performance, can reduce the impact of installation errors. These bearings are mainly used in automobile steering mechanism, machine tool spindle.
Thrust roller bearings are divided into thrust cylindrical roller bearings, thrust spherical roller bearings, thrust tapered roller bearings, thrust needle roller bearings. Thrust cylindrical roller bearings are mainly used in oil drilling rigs, iron and steel making machinery. Thrust spherical roller bearings are mainly used in hydroelectric generators, vertical motors, ship propeller shafts, tower cranes, extruders, etc. Thrust tapered roller bearings are mainly used in: one-way: crane hook, oil drilling rig ring. Bidirectional: steel rolling mill roll neck. Plane thrust bearing in the assembly body mainly to bear the axial load, its application is widespread.
(1) Separate the tight ring and loose ring of the bearing (judged by the size of the inner diameter of the bearing, the difference in bore diameter O.1~O.5mm).
(2) Separate the stationary parts of the mechanism (i.e., the parts that do not move, mainly the assembly).
(3) No matter what the case, the loose ring of the bearing should always rest on the end face of the stationary parts.
Metric thrust ball bearing is a kind of separated bearing, shaft ring, seat ring can be separated from the cage, steel ball components. The shaft ring is a collar that fits with the shaft, and the housing ring is a collar that fits with the housing hole, and there is a clearance between the shaft; the thrust ball bearing can only bear axial load.
Single direction thrust ball bearing can only bear axial load in one direction.Single direction thrust ball bearings can limit the axial displacement of the shaft and shell in one direction.
Double direction thrust ball bearing can bear axial load in two directions.Double direction bearings can limit the axial displacement in both directions.
Thrust ball bearing can not limit the radial displacement of the shaft, the limit speed is very low.
The roller of 29000 type bearing is asymmetric spherical roller, which can reduce the relative sliding of roller and raceway in the work, and the roller is long, large diameter, the number of rollers, high load capacity, usually using oil lubrication, individual low speed case can be grease lubrication. In the design selection, should be preferred.
80000 type thrust cylindrical roller bearings, 90000 type thrust tapered roller bearings and AXK type thrust needle roller bearings, can withstand one-way axial load, which is much larger than the axial load capacity of thrust ball bearings, and rigid, occupy little axial space.
Thrust cylindrical roller bearings and thrust needle roller bearings are suitable for low speed occasions, and the speed of thrust tapered roller bearings is slightly higher than that of thrust cylindrical roller bearings.
