China wholesale Caster Factory - Carsun Medium caster 4-inch plug-in polyurethane PU universal caster – Carsun

Under the working conditions of water, oil and other wetting media, the wear resistance of polyurethane wheel is often several times to dozens of times that of ordinary rubber materials. Although metal materials such as steel are hard, they are not necessarily wear-resistant; Others, such as the rubber roller of rice huller for rice milling, the screen plate of vibrating screen for coal preparation, the track track track of sports field, the dynamic oil seal ring for crane forklift, elevator wheel and roller skate wheel, are also the use of polyurethane elastomer. It should be mentioned here that in order to improve the friction coefficient of low and medium hardness polyurethane elastomer and improve the wear resistance under load, a small amount of lubricant such as aluminum disulfide, graphite or silicone oil can be added to this kind of polyurethane elastomer.

Most of the time, to understand a thing or person is to understand its advantages and disadvantages, and then judge what it should be from its advantages and disadvantages; A person who is good at discovering the advantages of others and learning from them is the one who makes the fastest progress. When dealing with a product, you should also have a pair of eyes that can find the advantages and disadvantages, so that you can choose a more suitable product. Polyurethane casters have been widely used in the market. Because of their wide range, it is difficult to distinguish between good and bad. Therefore, at this time, we need a pair of eyes that are good at finding out the differences between this polyurethane caster and another one.

① Polyurethane castors have good physical and chemical resistance. Polyurethane castors have the advantages of oil resistance, ozone resistance, aging resistance, radiation resistance and low temperature resistance. These advantages are the reason why polyurethane castors are widely used in many special fields.

② The performance of polyurethane castors can be adjusted in a wide range. Many physical and mechanical performance indexes of polyurethane castors can be changed flexibly within a certain range through the selection of raw materials and the adjustment of formula, so as to meet the unique requirements of users for the performance of products.

③ Polyurethane castors have excellent wear resistance. The wear resistance of polyurethane castors is very superior. Especially under the working conditions with water, oil and other wetting media, its wear resistance performance is more prominent, which can reach several times to dozens of times that of ordinary materials. Polyurethane castors are better than metal castors when both hardness and wear resistance are required.

④ What is polyurethane castor elastomer:
a. Polyurethane elastomer is a polar polymer material composed of many flexible and rigid segments. With the increase of the proportion of rigid segments and the density of polar groups, the original strength and hardness of elastomer will increase accordingly.
b. Polyurethane elastomer can be molded by plastic refining, mixing and vulcanization process (MPU) like general rubber; It can also be made into liquid rubber, cast molding, spraying, potting and centrifugal molding (referring to CPU); It can also be made into granular materials, which, like ordinary plastics, are formed by injection, extrusion, calendering, blow molding and other processes (referring to CPU). Molded or injection molded parts can also be machined such as cutting, grinding and drilling within a certain hardness range. Due to the diversity of processing, polyurethane elastomer has a wide range of applicability and expanding application fields.