For an old river's lake who has been wandering in the caster industry for 15 years, besides being very confident in the quality of products, we are also unambiguous about the professional knowledge of casters. Some common caster problems are often asked by customers. We have summarized them and summarized them, hoping to help you.
01、How is the surface of caster bracket generally treated?
In the market, the most common bracket colors are divided into two types: silver and black. Silver is through electroplating, plating a layer of zinc or chromium, so that the color of the bracket becomes silver. The black scaffold is usually turned black by electrophoresis. Another high-grade casters, using dusting technology, color can be customized according to customer needs, of course, the price is relatively high. Whether it is electroplating technology, electrophoresis technology or powder spraying technology, the purpose is to prevent the scaffold surface from rusting.
02、What are the general braking methods of casters?
Caster brakes can be divided into three types according to their functions: brake wheels, brake direction and double brakes.
a、Brake wheel: An easy-to-understand device mounted on a wheel sleeve or wheel surface and operated by hand or foot. The operation is to press down, the wheels can't rotate, but they can turn.
b、Brake direction: The brake direction is used in the universal wheel to make the universal wheel become a directional wheel and keep it in the same direction.
c、Double brake can not only lock the wheel to move, but also fix the wave disk to rotate.
03、 Steel core wheel and Iron core wheels have heavier load than other wheels?
No, the process 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 softness and hardness of the material can be modulated. Some manufacturers' rubber wheels are harder than nylon wheels, so rubber casters also have hard rubber and soft rubber. When buying casters, if there is no requirement, they are all soft rubber by default.
05、Double bearings are more stable than single bearings, and single bearings rotate faster?
Double bearings are used in high-end products, and their stability, mute effect and load-bearing capacity are stronger than those of single bearings. Single bearing is a simplified version of double bearing. Although the performance is not as good as double bearing, the price is cheaper.
06、How to calculate the size of casters?
When we buy casters, we always mention the size. The size unit here is inches, not "inches" in our country. Generally, the conversion is the size of inches divided by 25, which is the inch of our country. For example, a caster with a diameter of 50 inches is 2 inches.
07、What factors will affect the flexibility of casters
There are many factors that affect the flexibility of casters, which can be roughly divided into the following:
a、Wheel size: The larger the diameter of the wheel, the more flexible it is to rotate and the more labor-saving it is to push.
b、Eccentricity of tripod: The larger the eccentricity of tripod, the more flexible it is, but the bearing weight is reduced accordingly.
c、Wheel material: On flat ground, hard material rotates more flexibly, but on uneven ground, soft wheels are less labor-saving.
d、Wheel surface size: The smaller the contact area between the wheel and the ground, the more flexible the rotation. Therefore, many wheels adopt cambered surface design to reduce the contact area with the ground.
E、Bearings: Bearings are generally divided into: single ball bearings, double ball bearings, roller bearings, Terling bearings.
Single ball bearing and double ball bearing, flexible rotation, suitable for quiet environment; Roller bearings, load-bearing capacity, but general flexibility; Terling bearings are suitable for humid and corrosive environment, but they have great 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 rotating shaft is in a vertical position;
c、Directional wheels ensure that the two wheels are parallel and perpendicular to the frame.
09、When 4 casters are used at the same time, is the weight of one caster multiplied by 4
No, when four casters are used at the same time, the actual safety load is generally based on the sum of the parameters of the three casters, because when the road surface is uneven, the three casters land, and only three casters bear all the weight at this time.
10、What factors should 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 filings remain, etc., hard casters, such as iron wheels and nylon wheels, should be used in this case.
b、Consider the site environment: the external environment with acid and alkali or the ground, and generally use polyurethane casters. Temperature in 60 degrees or above environment, generally use high temperature casters or iron wheels. Rubber wheels are suitable for the low temperature environment of MINUS 30.
c、Consider the surrounding environment: If you need a low noise environment, you should use soft and elastic casters made of polyurethane, artificial rubber and other materials, such as offices, hospitals, floors, quiet workshops and dense transportation passages in shopping malls.
The above is based on the customer often asked questions for a long time, summarized and sorted out, if you have other questions, you can leave us a message, we will give you professional answers.
