At present, there are still angular contact ball bearings with small contact angles or thrust ball bearings in combination as ball bearings. The machine tool has poor machining accuracy and low rigidity. At present, in China, only a very small number of high-precision ball screw bearings can be mass-produced, and the variety is limited, not a series. Although foreign high-precision ball screw ball bearings have excellent performance and reliable use, they are expensive and difficult to guarantee delivery. These have a direct impact on the development of CNC machine tools in China. The completion of Zhongyue high-precision ball screw bearings will greatly enhance the industrialization level of China's CNC machine tools, and will replace imported bearings, develop China's national industry, and enhance the competitiveness of China's mechanical and electrical products in the domestic and foreign markets.
High-precision ball screw ball bearing is a one-way angular contact bearing. Its nominal contact angle is 60°. This bearing can withstand large axial loads in a single direction, and it can also bear a certain radial load. Usually it needs to be grouped. use. LYZYC high-precision ball screw bearings use an inseparable structure. The cages are made of high-performance engineering plastics with many balls. The bearing has the characteristics of large axial load carrying capacity, good rigidity, high speed performance, small friction torque, flexible rotation, high performance and long service life.
Excavator Cylinder Piston Seals
Precautions for the installation of hydraulic cylinder piston seals in excavators
1. The sealing of the oil cylinder piston should use products of reliable quality to ensure good sealing performance.
2.Before installing the oil cylinder piston seal, the seal and sealing groove should be cleaned to ensure that the sealing surface is free of impurities.
3. When installing the seal, the correct installation sequence and direction should be carried out according to the drawing requirements to ensure the correct installation of the seal.
4.When installing the seal, special tools should be used to avoid using sharp tools and hard objects to damage the seal.
5. When installing the seal, attention should be paid to whether the seal groove is damaged or worn. If so, it should be replaced or repaired in a timely manner.
6. When installing the seal, an appropriate amount of lubricating oil should be applied to avoid friction damage to the seal during installation.
7.When installing the seal, it should be ensured that the compression of the sealing ring meets the requirements to avoid excessive or insufficient compression leading to seal failure.
8.After installing the seal, a sealing test should be conducted to ensure that the sealing performance meets the requirements.
Hydraulic cylinder piston seals, hydraulic cylinder seal, boom seal
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