Casters are common in shopping carts, baby carriages, beds, wheelchairs, etc., which are the wheels under these cars and beds. Caster bearing is the core of caster, bearing controls the mobility of caster, caster without bearing is no way to use, caster bearing is also very wide range of use.
Then we often encounter "caster bearing burn problem" in our daily life. What is caster bearing burn? Mainly refers to the bearing burn, the so-called bearing burn is the bearing raceway wheel, rolling body and cage in the rotation of the rapid heat until discoloration, softening, deposition and breakage. If the bearing is damaged, it will directly affect the use of casters. Therefore, after finding the bearing burn, we must find the cause and solution of the burn.
Types of caster bearings
1、Plane bearing: Suitable for high and extra-high load and high speed occasions. Therefore, it is often used in some special heavy machinery, such as textile factories, automobile factories, machinery factories and other places.
2、Roller bearings: Heat-treated roller bearings can carry heavy loads and have general rotation flexibility.
3、Terling bearing: Terling is a special engineering plastic, suitable for wet and corrosive places, general rotation flexibility, greater resistance.
4、Ball bearings: Choose high-quality bearing steel made of ball bearings, it also makes the left and right swing amplitude of the wheel and the gap between the swing amplitude of the upper and lower, greatly reduced; Make the wheel more stable when in use. It can bear heavy load, and is suitable for flexible and quiet occasions.
5、Ordinary bearings: The simplest form of wheel bearings is sliding or friction of bearings. They can resist earthquakes, require little maintenance, and, based on the characteristics of materials, can also resist corrosion. If the equipment only needs to move at a short distance and low speed.
6、Tapered bearing: Tapered bearing is one of the important components of roller bearing. Compared with ordinary bearings, they have the special advantage of expanding the use field of casters and providing improved mobility characteristics.
Subdivision, there are many types of caster bearings, the above are general types of caster bearings summary, according to the needs of different occasions can choose different types of caster bearings for caster installation.
Causes and Solutions of Caster Bearing Burn
一、Possible causes of caster bearing burn
1、Excessive load (excessive preloading);
2、The clearance is too small;
3、Poor lubrication of bearings, may use irregular lubricants, lubricants, too much or too little are incorrect;
4、The precision of shaft and bearing box is poor, and the deflection of shaft is large;
5、Excessive running speed;
6、The precision of shaft and bearing box is poor, and the deflection of shaft is large.
二、Solution of Caster Bearing Burn
First of all, choose the correct bearing lubricant, and the usage amount should be suitable. Lubricant can form an appropriate oil film on the rolling contact surface of the bearing, which helps to reduce the friction and heat generated by the bearing and prolong the fatigue life of the bearing.
Secondly, the fit degree, bearing clearance and preloading are studied, and the sealing device is improved.
Finally, check the accuracy of shaft and bearing box. When carrying out this operation, qualified users should ask relevant experts for guidance and try to learn the specific operation process.
The service life of bearings is closely related to the degree of burns, and the service life of bearings directly affects the service life of casters. Therefore, in order to ensure the service life of casters and reduce economic losses, we should tell users that the protection of bearings should not be ignored in the use of casters.
