Bearing type (2)

Thrust roller bearing
Including thrust cylindrical roller bearings, thrust tapered roller bearings, thrust needle roller bearings and thrust spherical roller bearings.
Needle bearing
Needle bearing
Needle roller bearings are equipped with thin and long rollers (the length of the rollers is 3 to 10 times the diameter, and the diameter is generally not greater than 5 mm), so the radial structure is compact, and its inner diameter and load capacity are the same as those of other types of bearings. The diameter is the smallest, which is especially suitable for supporting structures with limited radial installation size. Needle roller bearings can be used without inner ring or needle roller and cage assembly according to different applications. At this time, the journal surface and housing that match the bearing The hole surface is directly used as the inner and outer rolling surface of the bearing. In order to ensure the load capacity and running performance are the same as those of the bearing with a ring, the hardness, machining accuracy and surface quality of the surface of the shaft or housing hole raceway should be the same as the bearing ring. Needle bearing is a bearing unit composed of radial needle roller bearing and thrust bearing components. It has a compact structure, small size, high rotation accuracy, and can withstand a certain axial load while bearing a high radial load. And the product structure is diverse, adaptable and easy to install. Combined needle roller bearings are widely used in machine tools, metallurgical machinery, textile machinery and printing machinery, and can make mechanical system designs very compact and smart.
Spherical ball bearing
The outer diameter surface of the outer ring of the spherical ball bearing is spherical, which can play the role of centering.
Spherical roller bearing
Spherical roller bearing
Spherical roller bearings have two rows of symmetrical spherical rollers, which mainly support radial loads, and can also support axial loads in any direction, but cannot support pure axial loads. The outer ring raceway of this type of bearing is spherical, so its self-aligning performance is good, and it can compensate the coaxiality error. The bearing can still be used normally when the shaft is bent or installed with different concentricity. The self-aligning property varies with different bearing size series Generally, the allowed alignment angle is 1 ~ 2.5 degrees. This type of bearing has a large load capacity. In addition to bearing radial loads, the bearing can also bear axial loads acting in two directions. It has good impact resistance. Generally, The permissible working speed of spherical roller bearings is relatively low. Suitable for working under heavy or vibration loads.
Flange bearing
Flange bearings have flange flanges on the outer wheel. The feature is that it can simplify the structure of the host, reduce the size of the host, and make the bearing easier to locate.
Block bearing
A component in which a radial bearing and a seat are combined, and a base plate for mounting screws is provided on a supporting surface parallel to the axis line of the bearing.
Combined bearing
A set of rolling bearings composed of two or more bearing structures at the same time. Such as needle roller and thrust cylindrical roller combined bearings, needle roller and thrust ball combined bearings, needle roller and angular contact ball combined bearings, etc.
Linear Bearings
Linear bearings are divided into metal linear bearings and plastic linear bearings.
Metal linear bearing is a linear motion system produced at low cost for use with cylindrical shafts with infinite stroke. Because the load ball is in point contact with the shaft, the use load is small. The steel ball rotates with very little frictional resistance, so that it can obtain high-precision and smooth movement.
Plastic linear bearings are a kind of linear motion system with self-lubricating characteristics. The biggest difference between metal linear bearings and metal linear bearings is that metal linear bearings are rolling friction and the point contact between the bearing and the cylindrical shaft is suitable for low-load and high-speed motion. Plastic linear bearings have sliding friction, and there is surface contact between the bearing and the cylindrical shaft, so this type is suitable for high load and low speed movement.

Engine component tensioner