Zhejiang Waxing Electromechanical Co., Ltd is one of the most professional manufacturers and suppliers of 6306ddu-deep-groove-ball-bearing in China. Welcome to buy high quality customized bearings made in China here from our factory. For price consultation, contact us.
1. No.: 6306DDU
2. SIZE:30x72x19mm
3. Weight:0.355kg
Lead time:5-7 business day
Type:Deep-groove-ball-bearing
Quality:High Precision Quality
Ball Bearing 6306 ZZ For Electric Bicycle Bearing 6306-2RS 6306ZZ 6306DDU 6306LLU
Deep groove ball bearings support axial and radial loads in both directions and are suitable for high speeds. Deep groove ball bearings are used in a wide variety of different industrial machines.
Application:Industrial instruments(motors, pumps, internal combustion engines )
Agricultural machinery
Construction equipment
Engineering machinery
Silicone oil seal material Red silicone rubber seal size Food grade skeleton oil seal model
Silicone rubber (Silicone rubber; MQ for short;) refers to the rubber whose main chain is composed of silicon and oxygen atoms alternately, and there are usually two organic groups attached to the silicon atom. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano can improve the temperature and oil resistance of silicone rubber. Silicone rubber has good low temperature resistance, and generally can still work at -55°C.
1. What are the characteristics of oil seals made of silicone rubber?
The main characteristic of the oil seal made of silicone rubber is that it can maintain its rubber elastic effect for a long time in the range of -100 degrees Celsius to +300 degrees Celsius, and it can work for several hours at 400 degrees Celsius. It has excellent high temperature resistance. In addition, it also has excellent Excellent thermal stability, electrical insulation, weather resistance, ozone resistance, gas permeability, high transparency, excellent heat dissipation, and excellent adhesion, fluidity and mold release properties, within the temperature range of use, silicone rubber Can not maintain a certain degree of softness, resilience, surface hardness and mold release. In the temperature range of use, silicone rubber cannot maintain a certain degree of softness, resilience and surface hardness, and there is no significant change in mechanical properties, and Low resistance to long-term thermal aging.
2. What are the disadvantages of oil seals made of silicone rubber?
The biggest disadvantage of silicone rubber oil seals is low mechanical strength, poor tear strength, wear resistance, oil resistance and solvent resistance, large dimensional shrinkage during vulcanization and molding, and it is not easy to control the size during production.
3. Some special silicone rubbers have excellent oil resistance, solvent resistance, radiation resistance and can be used at low temperature in supermarkets. Among them, fluorosilicone rubber, on the basis of the excellent performance of silicone rubber, also has the characteristics of oil resistance, solvent resistance, and chemical resistance, which expands the application of silicone rubber to various oil media, acid media, and chemical solvent media. In the environment, it is currently the only elastomer that can be used in the fuel medium of -60 degrees Celsius to 230 degrees Celsius, and it is a promising engine seal material. However, similar to silica gel, it has poor strength and low surface energy. It is a material for verifying bonding and has defects such as processing.
4. What industries are oil seals made of silicone rubber used in?
Due to the special properties of silicone rubber oil seals, it is widely used in the sealing aspects of aviation, instrumentation, electronic appliances, navigation, metallurgy, machinery, automobiles, medical and health care and other parts.
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