General materials of wheels include HPU PU, TPR, PP, PVC, Nylon, Rubber PH,PA etc. Polyurethane casters are a commonly used material. It is important to choose based on the applicable temperature, ground environment, move frequency and speed etc .
There are many different mounting types can be used for casters, including Top Plate type, Threaded Stem type, Hole top Stem, Grip Ring Stem, Welded Pipe Stem etc . Normal Top Plate type is the most common and can be fixed use screw bolts or directly welded to equipment.
When calculating the load of a single caster, a certain safety factor should be given. When the ground is relatively flat, the load of a single caster=(total weight of the equipment ÷ number of casters installed) × 1.2 (safety factor);
Generally speaking, the larger the diameter of the casters, the less force is used to push them, and the stronger the ability to overcome obstacles. However, a larger diameter of the casters will increase the center of gravity and increase equipment costs, which requires comprehensive consideration.
