You may be wondering what the different types of caster wheels are. Here are a few types you should know about: Spherical, Forged steel, and Polyurethane. Choosing a caster depends on the application. The diameter of the wheel can vary between 2″ and 2 1/2″. Caster load capacities range from 80 to 120 lbs. The larger the wheel, the higher the load capacity.
Polyurethane wheels
There are many differences between Polyurethane and rubber casters. Polyurethane wheels are more substantial and have better capacities than rubber wheels. These wheels are also non-marking, easy to push, and have a higher rebound resilience than rubber wheels. As a result, a polyurethane caster wheel is ideal for many applications, including freezers and tow lines. Polyurethane wheels also last longer than their rubber counterparts.
Another difference between PolyU wheels and polyolefin wheels is their resistance to wear and tear. PolyU wheels are lightweight and durable but do not scratch or mark floors. They are resistant to heat and oil, and they resist corrosion. Polyurethane wheels also feature solid urethane cores. They are non-marking and are suitable for continuous usage in harsh environments. PolyU wheels are a good option if you need to roll your chair or scooter a lot.
Forged steel wheels
Steel wheels are forged from high-carbon steel billets. High-tonnage forging hammers repeatedly hit them to produce a highly reinforced wheel. This wheel offers maximum strength and durability and is virtually indestructible within its capacity range. In addition to their power, forged steel wheels are easy to weld and ideal for heavy-duty industrial applications. The disadvantage of forged steel wheels is their cost, which can be as much as 30% higher than those made of gray iron.
Forged steel and cast iron wheels are suitable for various industrial applications. The difference between the two types is the manufacturing process. Forged steel wheels are formed by a hot forging process, which involves heating medium carbon steel billets to a temperature of approximately 2,400 degrees F. This process enhances the grain structure of the metal and increases its tensile strength.
Twin-wheel casters
Twin-wheel casters have been the standard of safety and smooth-running mobility for mobile cabinets, and their urethane wheels are excellent for various surfaces. Whether the casters are used in a warehouse or a restaurant, they provide smooth-running mobility and protect flooring.
Twin-wheel casters are better suited to uneven surfaces than single-wheel casters. The twin-wheel design has non-marking thermoplastic rubber treads and a polypropylene hub with precision ball bearings. Casters have a 60mm square fitting plate and are equipped with a foot-operated brake to lock both swivel and roll features. Twin-wheel casters come in various sizes and styles, with most petite models supporting up to 77 lb. The largest is 75mm x 102mm, approximately three by four inches.
Spherical wheels
You can purchase spherical caster wheels from several manufacturers. Some companies are more affordable, while others take pride in using quality materials. The quality of the material used in a wheel determines its weight load capacity. A cheaper material may not be strong enough to support the weight load needed for your application. Ultimately, it would help if you chose a wheel that meets all of your needs. For this reason, it’s essential to do your research before making a purchase.
The environment in which spherical casters are used will also affect their performance. You’ll need to determine how much room there is for the wheels to swivel entirely and their durability and noise levels. For optimal performance, choose casters with a low flutter rating. You can eliminate this issue for moderate speeds by increasing the trailing distance. However, high rates can cause flutter.
