Japan's JTEKT has developed a more durable and corrosion-resistant 'PPS*1 retainer cylindrical bearing'. The resin retainer is lighter than the carbon steel, brass and other metal devices. Low torque, lubrication and other properties have been greatly improved, but the heat resistance and corrosion resistance of traditional polyamide materials are limited. The hydraulic pumps used in high temperature oils, the compressors in motors and refrigerant gas are Very difficult. Therefore, by developing a 'retainer cylindrical bearing' using PPS material, it can be applied in these environments and coexist with high performance.
JTEKT is a new company established after the merger of former Koyo Seiko and the original Toyota Machine. It has JTEKT, KOYO, TOYODA and other brands. Through the merger of Koyo Seiko and Toyota Machine, the new company has the world number The market share of the steering system industry, combined with the bearing industry, the machine tool industry, the transmission industry has become the main four major industries, and the various industries have been fully freely combined to become a manufacturer capable of providing a world-class system.
In the past, carbon steel, steel and brass were used as materials in the cage for retainers. In recent years, in order to improve the function of the bearings, more and more resin materials with excellent lubricity and low torque have been used. Resin retainer materials Polyamide (66 nylon and 46 nylon) is limited in corrosion resistance and heat resistance, and is restricted in use in high temperature oils and in refrigerant environments such as compressors. Traditional carbon steel has to be used in these environments. And the brass retainer, but in the strict environment, the demand for high bearing function is getting higher and higher, so I started to develop the resin retainer.
Polyamide materials have high corrosion resistance and heat resistance but are difficult to form. In the "PPS spur ball bearing" developed in March 2015, the mass production experience has been accumulated, and the PPS material forming technology is also constantly improving. This technology can also be successfully transferred to the tube bearing. The high temperature and the eating resistance are improved, and the application range of the resin is expanded. This product is used in hydraulic equipment, compressors, etc., and is lightweight and efficient for components. make a contribution.
PPS plastic (polyphenylene sulfide) is a thermoplastic special engineering plastic with excellent comprehensive performance. Its outstanding features are high temperature resistance, corrosion resistance and superior mechanical properties. The world's top five PPS producers are Phillips, Toray, Tyco. Na, Baoli and Japanese ink. Some units in China have had a small number of small tests, but they are unable to stabilize continuous production. The world's largest demand for PPS is 33% in Japan, 32% in North America, 19% in Western Europe, and 16% in Asia Pacific.
In summary, PPS products have the following three advantages:
1. Heat resistance, food resistance Compared with traditional resin materials (polyamide), it has heat resistance and good eating resistance.
2. Lightweight Compared with brass holders, the weight of the holder is about 86% lighter.
Approximately 11% lighter weight on the bearing as a whole
3. Low torque reduction Starting torque is reduced by approximately 10% compared to brass retainers
Lightweight car can be said to be a very hot topic at present, especially the introduction of 2017 policies and regulations, the stimulation of it is very obvious, rubber and plastic materials will play a big role in it, compared with metal, this material may still be Limited, but its development space will be much larger, and the market with the largest weight of cars will no doubt be in China.