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Introduction, characteristics and uses of plastic bearings
POM plastic bearings, PP plastic bearing (POM-Guo -1-3-7-3829-0634)
POM and PA material with good mechanical strength and wear resistance, suitable for the production of precision plastic bearings, working temperature from -60 ℃ ~ 100 ℃, high strength and smooth surface, basically does not appear tension, good self-lubricating performance and low coefficient of friction, on the basis of maintaining the traditional advantages of plastic bearings, can be applied to the precision and higher speed operation. POM plastic bearings are the most widely used of all plastic bearings, general internal and external ball materials with POM or PA, to maintain the frame of glass fiber reinforced nylon 66 (GRPA66-25). Ball glass ball, stainless steel balls or ceramic balls, bearing alkaline environment such good performance but is not suitable for running in acidic corrosive environment.
Features:
Rigidity, high hardness, even at low temperatures, high impact strength;
Excellent flexibility, creep resistance;
(3) the high thermal stability and very good dimensional stability;
4 sliding performance, wear;
Physiologically inert, suitable for contact with food.
6 Even in strong acid and strong oxidizing agents, poor adhesion of paint
Main purpose: mechanical and electrical equipment, fitness equipment, food machinery, furniture and decorating materials.
, HDPE, PP, the UPE materials has proven to be for the relatively weak acid-base cross-environment (30% Cucl2 solution and 30% NaoH solution to test for OK) it applies to most of the acid / base / salt / solvent / oil / gas and salt corrosive environments. With general plastic bearings, oil-free self-lubricating, anti-magnetic electrical insulation performance, but lower mechanical strength, easily deformed, it is such resistance to acid-base Plastic bearing are not used for larger loads and higher speed, in order to overcome this kind of acid-fast The drawback of alkali plastic bearings. In comparison, the use of UPE materials have better strength, low friction characteristics and low-temperature characteristics (minimum to -150 ° C) inside and outside the ring material uses of HDPE, PP or the UPE cage materials using HDPE, PP or UPE, ball glass ball, stainless steel balls or ceramic balls. So that resistance to acid-base slide bearing the comprehensive performance will be greatly improved.
Features:
A good corrosion resistance and a variety of corrosive media and organic media, in a certain temperature and concentration range of ability
(2) high mechanical strength, cut to maintain a high toughness in the temperature of liquid nitrogen (-196 ℃)
(3) a good self-lubricating, high wear resistance
(4) the ability of anti-adhesion
Very low water absorption, excellent electrical insulation
6. Good resistance to high-energy radiation performance
Main purpose: mechanical and electrical equipment, fitness equipment, food machinery, furniture and decorating materials.
, PTFE high-temperature corrosion-resistant plastic bearings
PTFE and PI as a new engineering plastic materials, proved to be a good mechanical strength, dimensional stability and high temperature performance of all known engineering plastics, including PTFE long-term use temperature of 260 ° C, PI long-term use temperature up to 300 ℃ and has excellent resistance to corrosion, corrosion in the pH of the medium intensity environment can still operate freely, it is generally used for the production needs of the outer material selection PTFE or PI, the ball generally ZrO2 or Si3N4 ceramic ball. Precise operation of the bearings in the relatively harsh environment, the drawback is more expensive because the material itself, so the use of high cost.