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plastic bearing housing material performance, characteristics and uses and plastic spherical bearings
Plastic bearing seat and plastic spherical bearing

plastic bearing housing with unique weight is light, easy to install, corrosion-resistant, maintenance-free, and has the shock absorption and shock resistance that common cast iron seats or stamping seats do not have. With the continuous development of new materials, more and more are widely used in engineering.

Product description
The plastic bearing housing is uniquely light-weight, easy to install, and free of maintenance. At the same time, it has common cast iron bearing housings or stamped bearing housings that do not have shock absorption and shock resistance. With the continuous development of new materials for bearing housings, more and more are widely used in engineering. According to different situations, plastic spherical bearings can be made of different materials such as POM, HDPE, PP, UPE, PTFE and so on. Compared with plastic spherical bearings, PBT materials are generally used.

The most typical varieties of fluoroplastics, PTFE and PVDF have the best corrosion resistance. Among them,  PTFE is the best corrosion resistance among all known engineering plastics. It can be used in all concentrated acid and alkali occasions, including HF And fuming sulfuric acid nitric acid (above 98%), etc., and has a good high temperature performance, PTFE proved to be able to be used at 180 ℃ high temperature, PVDF can also be used at 150 ℃, but the mechanical strength of PTEF material is extremely low, and poor dimensional stability The temperature deformation is large. Compared with PVDF, it has better comprehensive performance. Generally, the inner and outer ring materials are PTFE or PVDF, the cage material is PTFE or PVDF, and the balls are generally glass balls or ceramic balls.

Characteristic of plastic bearing housing:

1. Excellent chemical resistance, can withstand all strong acids (including aqua regia) except molten alkali metals, fluorinated media and sodium hydroxide above 300 ℃, as well as strong oxidants, reducing agents and various organic The role of solvents
2. Excellent heat resistance, its melting temperature is 324 ℃, decomposition temperature is 415 ℃, maximum use temperature is 250 ℃, embrittlement temperature is -190 ℃, thermal deformation temperature (under 0.46MPa) is 120 ℃.
3. It has the smallest surface tension among solid materials and does not adhere to any substance
4. Low friction performance, the friction coefficient is the lowest among the known solid materials
5. Resistance to aging
6. Good flexibility

PVDF, PTFE (Teflon), PPS (polyphenylene sulfide), PEEK (polyether ether ketone), PI (polyetherimide), etc. have all proved to be ideal materials for making high-temperature plastic bearing housing, in which PI can be 290 Used in an environment of ℃, the short-term temperature resistance can be up to 350 ℃. It is the best high temperature performance among all known engineering plastics.

HDPE, PP, UPE materials have been proven to be used in relatively weak acid-base cross environments (30% Cucl2 solution and 30% NaoH solution test OK), so it is suitable for most acids / alkali / salt / solvent / oil / gas and Seawater corrodes the environment. It has the properties of oil-free self-lubrication and anti-magnetic electrical insulation of general plastic bearing housing, but the mechanical strength is low and it is easy to deform. Therefore, such acid-resistant plastic bearing housing are not suitable for larger loads and higher speeds. Disadvantages of alkaline plastic bearing housing. In comparison, using UPE material has better strength, low friction characteristics and low temperature application characteristics (down to -150 ℃), generally the inner and outer ring materials are HDPE, PP or UPE, the cage material is HDPE, PP or UPE, the ball is a glass ball, stainless steel ball or ceramic ball. In this way, the comprehensive performance of acid and alkali resistant bearings will be greatly improved.

Characteristic of plastic bearing housing:
1. Good corrosion resistance, can withstand various corrosive media and organic media within a certain temperature and concentration range
2. High mechanical strength, cutting energy can maintain high toughness at liquid nitrogen temperature (-196 ℃)
3. Good self-lubrication, high wear resistance
4. Strong anti-adhesion ability
5. Very low water absorption, excellent electrical insulation
6. Good resistance to high energy radiation

The main purpose:
Mechanical and electrical equipment, fitness equipment, food machinery, furniture and decoration building materials

Contact: Ellen
Email: [email protected]
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