Stamped bearings: the most representative stamped bearings with a wide range of applications, capable of withstanding radial and bidirectional axial
loads; Suitable for high-speed rotation and occasions that require low noise and low vibration; Sealed bearings with steel plate dust covers or rubber
sealing rings are pre filled with an appropriate amount of lubricating grease; Bearings with retaining rings or flanges on the outer ring are easy to locate
axially and facilitate installation inside the casing; The size of the maximum load type bearing is the same as that of the standard bearing, but there is
a filling groove on the inner and outer rings, which increases the number of balls and increases the rated load.
The bearing model includes pre code, basic code, and post code. The basic code represents the basic type, structure, and size of the bearing. Pre and
post codes are supplementary codes added around the basic code when there are changes in the structural shape, dimensions, tolerances, and technical
requirements of the bearing. The basic code consists of bearing type code, size series code, and inner diameter code, except for needle roller bearings.
Type code: 0 Double row angular contact ball bearing 1 Self aligning ball bearing 2 Self aligning roller bearing and thrust self aligning roller bearing 3
Cone roller bearing 4 Double row deep groove ball bearing 5 Thrust ball bearing 6 Deep groove ball bearing 7 Angular contact ball bearing 8 Thrust
cylindrical roller bearing N Cylindrical roller bearing NN Double row or multi row cylindrical roller bearing U Outer spherical bearing QJ Four point
contact ball bearing
Modern machines, instruments, and other equipment are developing towards high speed, heavy load, precision, and lightness, which puts forward
many new requirements for stamped bearings. For example, while reducing size, bearings are required to maintain or even increase rated load, new
technologies are used to improve processes, improve manufacturing accuracy, and reduce costs. Universal stamped bearings are no longer able to
meet various requirements. For machines and equipment with large production volumes, specialized bearings should be designed and manufactured.
While strengthening standardization, variety should be increased, and the proportion of specialized bearings should be expanded. The development
of modern industry also requires special bearings that work under special working conditions, such as bearings that work at high speed, high
temperature, low temperature, strong magnetic field, or in media such as acid and alkali.