8. Thrust roller bearings
Including thrust cylindrical roller bearings, thrust tapered roller bearings, thrust needle roller bearings and thrust spherical roller bearings.
9. Needle roller bearings
Needle roller bearings are equipped with thin and long rollers (the length of the roller is 3-10 times the diameter, and the diameter is generally not greater than 5mm), so the radial structure is compact, and its inner diameter and load capacity are the same as other types of bearings. The smallest diameter, especially suitable for supporting structures with limited radial installation dimensions. Needle roller bearings can be used without inner ring bearings or needle roller and cage assemblies according to different applications. At this time, the journal surface and housing that match the bearing can be selected. The hole surface is directly used as the inner and outer rolling surface of the bearing. To ensure the load capacity and running performance are the same as the bearing with ring, the hardness, machining accuracy and surface quality of the raceway surface of the shaft or housing hole should be combined with the bearing ring. The needle bearing is a bearing unit composed of a radial needle roller bearing and a thrust bearing component. It has a compact structure and small volume, high rotation accuracy, and can bear 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 various mechanical equipment such as machine tools, metallurgical machinery, textile machinery and printing machinery, and can make the mechanical system design very compact and dexterous.
10. Outer spherical ball bearings
The outer diameter surface of the outer ring of the outer spherical ball bearing is a spherical surface, which can play a role in centering.
11. Spherical roller bearings
Spherical roller bearings have two rows of symmetrical spherical rollers, which mainly bear radial loads, and can also bear axial loads in any direction, but cannot bear pure axial loads. The outer ring raceway of this type of bearing is spherical, so it has good alignment performance and can compensate for coaxiality errors. The bearing can still be used normally when the shaft is bent or installed out of center. The alignment varies with the bearing size series. Generally, the allowable alignment angle is 1~2.5 degrees. This type of bearing has a large load capacity. In addition to the radial load, the bearing can also withstand the axial load acting in both directions. It has good impact resistance. In other words, the allowable working speed of the spherical roller bearing is relatively low. Suitable for working under heavy load or vibration load.
12. Flange bearing
The flange bearing outer wheel is provided with a flange flange. 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.
13. Bearing with seat
A component in which a radial bearing and a seat are combined. There is a base plate for mounting screws on a supporting surface parallel to the axis of the bearing.
14. Combined bearing
A rolling bearing composed of two or more bearing structures in a set of bearings 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.
15. Linear bearing
Linear bearings are divided into metal linear bearings and plastic linear bearings.
Metal linear bearing is a linear motion system produced at low cost, used in conjunction with a cylindrical shaft with an infinite stroke. Since the bearing ball is in point contact with the shaft, the use load is small. The steel ball rotates with very little frictional resistance, so that high-precision and smooth motion can be obtained.
Plastic linear bearings are a kind of linear motion system with self-lubricating characteristics. The biggest difference from metal linear bearings is that metal linear bearings have rolling friction, and the bearing and cylindrical shaft are in point contact, so this is suitable for low-load and high-speed motion; Plastic linear bearings are sliding friction, and there is surface contact between the bearing and the cylindrical shaft, so this type is suitable for high-load, low-speed movement.