Some customers struggle to understand the weight limits for small spring-loaded casters. They don't understand that the larger dynamic load number does not apply to more than one caster. A load is distributed across the casters under its weight when a caster is used. Therefore, it can fail if it cannot withstand a large dynamic load. In addition, the caster wheels must have a polyurethane tread.
High speeds can cause problems with small spring-loaded casters.
Springs in spring-loaded caster wheels have their limitations. They are designed to support a certain maximum weight. Once the load is removed, the springs no longer have enough force to spring back. So, consider the maximum weight of your small spring loaded casters' wheel when purchasing them. Otherwise, you'll be buying the wrong caster wheel for your specific needs.
The wrong spring can do more damage than good. The spring constant can be too high or too low, extending the shock impact and causing excessive vibration. Choosing the correct spring for the application is important because high speeds can damage the bearings in a caster wheel hub. Aluminum is not as hard as steel, but it is strong enough to support over six thousand pounds per caster.
Caster wheels must have a polyurethane tread.
The wheels of small spring-loaded casters must be made of polyurethane or a similar material. Polyurethane caster wheels can be non-marking and easy to push. Non-marking wheels also reduce noise, and they are easy to start up. Polyurethane caster wheels are available in black and grey. This material has higher load capacities than soft rubber but is not non-marking.
Several industries require heavy object movement, including aerospace. Casters in this industry must have a load limit of several tons. Aerospace caster wheels are typically forged steel or nylon with a polyurethane tread, but some may be solid rubber. Some types have two or more wheels. The number of wheels will also determine the load capacity. If you need a smaller caster for an office, you should look for one with a higher load capacity.
The traction of small spring-loaded casters depends on their use. A durable polyurethane tread will withstand a heavy load while allowing the caster to roll. Similarly, polypropylene wheels are lightweight and durable. They are widely used in industrial, food service, and commercial environments for these reasons. These wheels have the best performance in these industries, so make sure you choose a set of casters with a polyurethane tread.
Casters that don't have stainless steel or chrome finishes can fail.
Casters are a relatively small part of material handling carts, but they play a very important role in the movement of the carts. Therefore, if a caster fails before it is ready to work, it can have a negative impact on the company's bottom line. While caster technology has improved over the years, premature caster failure still poses a significant risk. Not only does premature caster failure result in machine downtime, but it can also negatively affect ROI due to the high costs associated with caster replacement.
Environmental conditions can cause small spring-loaded casters to fail. For example, casters without stainless steel or chrome finishes can experience corrosion in wet environments, weakening the caster components and increasing the risk of failure. Other environmental considerations include surface characteristics, debris, and corrosive vapors. If these factors are present in the environment, you should choose a different caster.
The maximum load weight of a caster should be divided by the number of wheels and casters to determine how much weight can be safely distributed across the cart. Keep in mind that most loads do not maintain an even distribution of weight across the cart. If one or two wheels are off-center, the weight can overload even the most durable casters. When in doubt, check with your manufacturer.
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