machine parts

China's bearing manufacturing technology and equipment technology development is slow, CNC machining rate and grinding automation level is low, there are only more than 200 automatic production lines in China. In most   China bearing manufacturers , especially in the state-owned enterprises, traditional equipment is still the main production force. The advanced heat treatment technology and equipment, which are very important to the bearing life and reliability, have not made breakthroughs in many technical problems. The research and development of new bearing steel grades, the improvement of bearing steel quality, the research and development of lubrication, cooling, cleaning and abrasive grinding tools and other related technologies can not meet the requirements of China bearing product level and quality improvement. As a result, the process capability index is low, the consistency is poor, the product processing size dispersion is large, and the internal quality of the bearing p...

Proper amount of lubricant is not required to be cleaned before installation, and lubricant is not required to be added. When the jacking screw on the protruding end of the bearing inner ring is fastened on the shaft, the allowable axial load shall not exceed 20% of the rated dynamic load. Bearing NO. Dimensions(mm/in.) Dynamic load ratings(N) Static load ratings(N) Weight (kg) d D B C S S1 G Ds F UC 204-12 3/4 1.8504 1.2205 0.6693 0.5 0.72 0.189 1/4-28UNF 0.146 12800 6600 0.16 The code of Bearing insert UC204 with set screw is UC200 series (light series), UC300 series (heavy series) and UB (sb) 200 series. If the application environment is small, UC200 series is usually selected on the applications,, otherwise uc300 series is selected. Generally, there are two jackscrews on the spherical surface ball bearing, with an included angle of 120 °. The characteristic is that the jackscrew is used to Jack the shaft when cooperating with the shaft, and then it has a fixed effect. Howe...

Compared with ordinary bearing units, stainless steel bearing units not only have obvious advantages in terms of material, but also have stricter technical and precision control than ordinary bearings. ​ Unit NO. Dimensions(mm/in.) Bearing NO. Bolt Size mm/in. Housing NO. Weight (kg) d h a e b s 2 s 1 g w t B n SS-UCP 204-12 3/4 1-5/16 5 3-3/4 1-1/2 3/4 1/2 9/16 2-9/16 1-3/4 1.2205 0.5 SS-UC204-12 3/8 P204 0.64 SSUCP204-12 Mounted bearing unit , Stainless steel bearing unit is a kind of bearing unit that combines rolling bearing and bearing housing. Most stainless steel outer spherical bearings have a spherical outer diameter and are installed together with bearing housing with a spherical inner hole. The structure is diverse, versatile and interchangeable. At the same time, this type of stainless steel bearing unit also has a certain degree of self-alignment in design, easy to install, and has a double structure sealing device, which can work in harsh environments. Stainless steel...

The insert bearing also is named pillow block bearing , it is actually a variant of the deep groove ball bearing. Its outer diameter surface is spherical, which can be fitted into the corresponding concave spherical surface of the bearing seat to play the role of centering. The insert bearing is mainly used to bear the combined radial and axial load, and it is not suitable to bear the axial load alone. The insert bearing is more convenient to use than the general deep groove ball bearing. Its main characteristics are simple loading and unloading and adjustable center. The standard tolerance of the insert bearing is: adding and subtracting inside and adding tolerance to the inner diameter, so as to ensure the lightness when matching with the shaft; each set of insert bearing is not used separately, and it must be equipped with the inner whole installation of the bearing seat, and the insert bearing seat is not used alone It has various shapes, so it is suitable for various structural po...

Wheel Bearing   is the central element of the chassis system, the radial bearing is responsible for mounting the wheel to the steering knuckle and the hub. Car handling depends on this part’s quality and regular maintenance. Types of wheel bearings Single-row radial ball bearings. They require careful installing, as incorrect installation can cause rapid failure of the part. Radial roller or double row bearings. They can handle twice the load of the single row ones. They do not need regular maintenance due to design features. Tapered roller (radial thrust) bearings. They withstand axial and radial load due to the shift in the direction of the rolling elements. The construction of wheel bearings The outer ring. Rolling element. The inner ring. The cage (polymer, steel, stamped, brass or machined). Tips for operating wheel bearings Front hub components are more prone to wear and tear, and therefore require regular replacement. Rear wheel bearing fails less often. To extend the parts ...

 Round Bore Non-Relubricable agricultural bearing Bearing NO. Type Dimensions(in./mm) Dynamic load ratings(N) Static load ratings(N) Weight(kg) d D C B W208 PPB2 1 1.5005 3.1496 0.709 1.6913 29500 18100 0.598 W208 PPB2 1 38.113 80 18 42.96 29500 18100 0.598 W208 PPB7 1 1.18 3.1496 0.709 1.189 29500 18100 0.558 W208 PPB7 1 30.175 80 18 30.2 29500 18100 0.558 W208 PPB10 3 1.5005 3.1496 0.8268 1.6913 29500 18100 0.817 W208 PPB10 3 38.113 80 21 42.96 29500 18100 0.817 W208 PPB23 1 1.5005 3.1496 1.189 1.6913 29500 18100 0.817 W208 PPB23 1 38.113 80 30.2 42.96 29500 18100 0.817 W209 PPB2 2 1.7717 3.3465 1.189 1.189 32700 20900 0.566 W209 PPB2 2 45 85 30.2 30.2 32700 20900 0.566 W209 PPB4 2 1.535 3.3465 1.189 1.189 32700 23200 0.659 W209 PPB4 2 39 85 30.2 30.2 32700 23200 0.659 W209 PPB11 1 1.7811 3.3465 0.866 1.437 32700 23200 0.573 W209 PPB11 1 45.24 85 22 36.5 32700 23200 0.573 W210 PP2 4 1.938 3.5433 1.189 1.189 35000 23200 0.667 W210 PP2 4 49.225 90 30.2 30.2 35000 23200 0.667 W...