Caster is a general term that includes movable casters, fixed casters, and movable casters with brakes. Movable casters, also known as gimbal wheels, have a structure that allows for 360-degree rotation. Fixed casters, also known as directional wheels, do not have a rotating structure and therefore cannot be turned.
Usually, both castors are used together. For example, the front of a trolley is usually equipped with two directional wheels, while the part close to the pushing armrest is equipped with two universal wheels.
Casters are available in a variety of different materials, including PP casters, PVC casters, PU casters, cast iron casters, nylon casters, TPR casters, ironcore nylon casters, and ironcore PU casters.
Structural features:
Shock Load:The instantaneous load-bearing capacity of the casters when the equipment is subjected to the impact or vibration of the load.
Static load:The weight that the casters can bear when they are stationary. In general, the static load should be 5 6 times the driving load (dynamic load), and the static load should be at least 2 times the impact load.
Steering:Hard, narrow wheels are easier to steer than soft, wide wheels. The radius of rotation is an important parameter of wheel rotation, too short the radius of rotation will increase the difficulty of steering, too large will lead to wheel shaking and shortening of life.
Driving agility:Factors that affect the driving flexibility of casters include the structure of the bracket and the choice of steel, the size and type of wheels, bearings, etc. The bigger the wheels, the better the driving agility. On smooth ground, hard, narrow wheels use less effort than flat-edged soft wheels, but on uneven ground, soft wheels are less effort and provide better protection and shock absorption.
Installation Height:Refers to the vertical distance between the ground and the installation position of the equipment, and the installation height of the caster refers to the vertical distance between the base plate of the caster and the edge of the wheel (maximum).
Driving load:The load-bearing capacity of the caster when moving, also known as dynamic load. The dynamic load of the casters varies depending on the way the factory is tested, and also varies depending on the material of the wheel. The key lies in whether the structure and quality of the bracket can resist impact and **.
Material Selection:The material of the caster has a significant impact on its durability and performance. Common materials include plastic, aluminum alloy, steel, etc. Different materials have different advantages and disadvantages, and need to be selected according to the specific use environment and needs.
Bearing Type:The bearing is an important part of the rotation of the caster, and its type and quality have an important impact on the rotational performance and service life of the caster. Common bearing types include ball bearings, roller bearings, ball bearings, etc., which need to be selected according to specific application needs.
Brake system design:The braking system is an important safety device for casters, and its design needs to take into account the braking effect, ease of operation and reliability. Some high-end casters are also equipped with an electronic braking system for fast, accurate braking.