Common Questions about Casters
Mar. 21, 2020
For a supplier engaged in the development and production of sports products and parts for industrial applications, in addition to being very confident in the quality of the products, we have a professional understanding of the expertise of pu castor wheels. Some common caster problems are also frequently asked by customers. We have summarized them and hope to help you.
01. How is the surface of the caster bracket generally treated?
The most common stand colors on the market are two colors: silver and black. Silver is electroplated and coated with a layer of zinc or chromium to make the color of the bracket silver. The black ones are usually made black by electrophoresis. Another high-end caster uses powder spraying technology, and the color can be customized according to customer needs, of course, the price is relatively high. Whether it is electroplating, electrophoresis or dusting, the purpose is to prevent the surface of the bracket from rusting.
Whether it is electroplating, electrophoresis or dusting, the purpose is to prevent the surface of the bracket from rusting.
02. What are the general braking methods of casters?
The brakes of casters can be roughly divided into three types according to their functions: brake wheels, brake directions, and double brakes.
a. Brake wheels: It is easy to understand. It is a device installed on the wheel hub or the surface of the wheel and operated by hand or foot. The operation is to step on, the wheels cannot turn, but can turn.
b. Brake direction: The brake direction is used in the universal wheel to turn the universal wheel into a directional wheel to maintain the same direction.
c. Double brake can lock the wheels to move and fix the wave plate to rotate.
03. Iron core and cast iron wheels have more load bearing capacity than other wheels?
No, the technology makes the injection-molded wheels have the same load-bearing capacity.
04.Rubber wheels (ER wheels) are softer than polyurethane wheels (PU wheels)?
Not necessarily. The soft hardness of the material can be adjusted. Some manufacturers have rubber wheels that are harder than nylon wheels, so rubber casters also have hard rubber and soft rubber. When purchasing casters, if not required, they are the default soft rubber.
05. Double bearings are more stable than single bearings, and single bearings rotate faster?
Double bearings are used on high-end products, which have better stability, quieter effect and bearing capacity than single bearings. The single bearing is a simplified version of the double bearing. Although the performance is not as good as the double bearing, the price is cheaper.
06. How to calculate the size of casters?
When we buy casters, we always mention how big the size is. The unit of measurement here is inches, not China's "inch". The general conversion is the size of inches divided by 25, which is China's inches. For example, a 50-inch diameter caster is 2 inches.
Pu Castor Wheels
07.What factors will affect the flexibility of casters
There are many factors that affect the flexibility of industrial PU wheels, which can be roughly divided into the following:
a, the size of the wheel: the larger the diameter of the wheel, the more flexible it is to rotate, and the less effort it takes to push.
b. Eccentricity of the tripod: The larger the eccentricity of the tripod is, the more flexible it is, but the bearing weight is correspondingly reduced.
c. Wheel material: On relatively flat ground, hard materials are more flexible, but on uneven ground, soft wheels are less labor-intensive.
d. Wheel surface size: The smaller the area where the wheel is in contact with the ground, the more flexible it is to rotate. Therefore, many wheels adopt a curved surface design to reduce the area of contact with the ground.
e. Bearings: Bearings are generally divided into: single ball bearings, double ball bearings, roller bearings, terling bearings.
Single ball bearings and double ball bearings, flexible rotation, suitable for quiet environments; Roller bearings, large bearing capacity, but general flexibility; Telring bearings are suitable for wet and corrosive environments, but with large resistance and general flexibility.
08.What should I pay attention to when installing casters?
a, ensure that it is installed in a horizontal position;
b, universal wheel, to ensure that the axis of rotation is in the vertical position;
C. Orientation wheels. Make sure the two wheels are parallel and perpendicular to the frame.
09. When 4 casters are used at the same time, is the bearing capacity of one caster multiplied by 4?
No, when 4 casters are used at the same time, the actual safety load is generally based on the sum of the parameters of 3 casters, because when the road is uneven, three casters land on the ground. At this time, only 3 casters bear all the weight.
10.What factors need to be considered when choosing casters?
a. Consider the ground: casters are generally used on flat ground. If the ground is uneven, hard objects or iron debris remain, in this case, use harder casters, such as iron wheels, nylon wheels.
b. Consider on-site environment: external environment or ground with acid and alkali, generally use polyurethane casters. In environments with a temperature of 60 ° or above, high temperature resistant casters or iron wheels are generally used. For low temperature environments of minus 30°, rubber wheels are more suitable.
c. Consider the surrounding environment: If a low-noise environment is required, it is necessary to use softer, elastic polyurethane, synthetic rubber and other casters, such as offices, hospitals, floors, quieter workshops, and dense transportation corridors in shopping malls.