Content Of Needle Roller Bearings

Needle roller bearings are equipped with thin and long rollers (the length of the rollers is 3-10 times the diameter, and the diameter is generally not greater than 5mm), so the radial structure is compact. Its inner diameter size and load capacity are the same as other types of bearings, and the outer diameter is the smallest. It is particularly suitable for supporting structures with limited radial installation size. Needle roller bearings can choose bearings without inner rings or needle and cage components according to different usage scenarios, At this point, the surface of the journal and shell hole that match the bearing are directly used as the inner and outer rolling surfaces of the bearing. To ensure the same load capacity and operating performance as the bearing with a ring, the hardness, machining accuracy, and surface quality of the surface of the shaft or shell hole raceway should be the same as that of the bearing ring The purpose combination needle roller bearing is a bearing unit composed of radial needle roller bearings and thrust bearing components. It has a compact structure, small volume, high rotational accuracy, and can withstand both high radial loads and certain axial loads. And the product structure is diverse, adaptable, and easy to install. Composite 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 agile.
Outer spherical ball bearing
The outer diameter surface of the outer ring of an outer spherical ball bearing is spherical, which can play a role in centering.
Spherical Roller Bearings
Self aligning roller bearings have two rows of symmetrical spherical rollers, which mainly withstand radial loads and can also withstand axial loads in any direction, but cannot withstand pure axial loads. The outer race of this type of bearing is spherical, so its centering performance is good, which can compensate for coaxiality errors. When the shaft is bent or installed unevenly, the bearing can still be used normally. The centering performance varies with the size series of the bearing, and the generally allowable centering angle is 1-2.5 degrees. This type of bearing has a large load capacity. In addition to being able to withstand radial loads, the bearing can also withstand bidirectional axial loads, and has good impact resistance, Generally speaking, the allowable working speed of self-aligning roller bearings is relatively low. Suitable for working under heavy or vibrating loads.