Advantages of New Polyurethane Material Casters
Apr. 18, 2020
Polyurethane products have the characteristics of wear resistance, good elasticity, impact resistance, and corrosion resistance. The PU castor wheels produced are flexible and convenient to use, durable, and wear-resistant, impact-resistant, chemical-resistant, and corrosion-resistant in different situations Low temperature, high temperature resistance, no wheel mark when driving, floor protection, low noise and quiet performance.
Many physical and mechanical performance indexes can be flexibly changed within a certain range through the selection of raw materials and the adjustment of formulas, so as to meet the special requirements of users on product performance. For example, hardness is often an important indicator for users. Polyurethane elastomers can be made into soft printing rubber rollers with a Shore A hardness of about 20, and they can also be made with a Shore D hardness of over 70.
Steel rubber rollers, which are difficult to achieve with general elastomer materials, can be adapted to the needs of different users. Polyurethane elastomer is a polymer material composed of many flexible segments and rigid segments. As the proportion of rigid segments increases and the density of sexual groups increases, the original strength and hardness of the elastomer will increase accordingly.
Pu Castor Wheels
In the development of casters, it was found that the wheels can only run on a straight line. It is more difficult to change the direction when carrying heavy objects. People invented wheels with steering structures, that is, casters or universal wheels. The handling efficiency has been greatly improved. With the development of industry, it has become more and more widely used and has become one of the indispensable components. Industrial pu wheels have also become a special industry.
Casters include movable casters, fixed casters and movable brake casters. The movable caster is what we call a universal wheel. It can rotate 360 °. The fixed caster is also called a directional caster. It has no rotating structure. Used with casters.
The main components of casters are:
Anti-wrap cover: to prevent objects from entering the gap between the wheel and the bracket, and protect the wheel from turning freely
Brake: A brake device that can lock the steering and fix the wheels.
Support frame: It is installed on the vehicle and connected to the wheels.
Wheels: made of rubber or nylon and other materials, transport goods by its rotation.
Bearing: rely on the steel ball sliding in the bearing to carry the heavy load and labor-saving steering.
Shaft: connecting the bearing and the support frame, carrying the gravity of the cargo.
Throughout the history of human development, people have created many great inventions, and these inventions have greatly changed our lives. The wheel is one of them. Every day you travel, whether it is a bicycle, a bus, or a car, these vehicles are all Transport is achieved by wheels.
It is now difficult to verify who invented the wheel. One thing is for sure, the invention of the wheel is a slow and long evolutionary process. At first, people found that scrolling is much more labor-saving than sliding.
People put logs under heavy objects and transport goods through the rolling of logs. Later, they were inspired by the logs to invent the wheels. The wheels should appear at the same time as the car. A single wheel is useless. Combine several wheels with the axle , Can play its role to a great extent.
It is very difficult to assume that humans have not invented wheels, no matter ancient or modern, what our society will look like. The role of wheels is self-evident, and what is more important is the meaning to society.
The emergence of wheels allows humans not only to travel far, but also to transport heavier objects to farther places. Therefore, large-scale cities and commerce have been developed. The wheels are simple but an amazing invention. The invention directly or indirectly determines the development and progress of society. Obviously, the emergence of wheels is one of the important signs of the progress of human civilization.
The friction coefficient between the polyurethane caster and the cement bottom is about 0.8. Polyurethane is called polyurethane, which is the general name of macromolecular compounds containing repeating urethane groups on the main chain. It is made by addition polymerization of organic diisocyanate or polyisocyanate with dihydroxy or polyhydroxy compound. Polyurethane material is very versatile and can replace rubber, plastic, nylon, etc., used in airports, hotels, building materials, automobile factories, coal factories, cement factories, apartments, villas, garden beautification, colorful stone art, parks, etc.