Factors influencing the swivel resistance
One type of resistance to which wheels and casters are subjected is the swivel resistance. This is the force that has to be applied to keep the rolling equipment in motion and to maneuver it. A distinction must be made between this swivel resistance and the starting resistance. The latter describes the force required to set a device in motion from a stationary position.
The swivel resistance depends on various factors. These include the tread and the hardness of the tread, as well as the offset. Floor conditions are important as well. The basic principle is: soft ground = hard casters and vice versa. In addition, influences such as the type of swivel bearing, the ball race diameter and the load that the casters must withstand must be addressed.
The number, type and arrangement of the casters are relevant when it comes to maneuverability. If, for example, only rigid casters are attached to a device, it will be difficult to turn, but it will travel very well in a straight line. If rigid and swivel casters are combined, or swivel casters with a directional lock are used, the device can be steered in all directions without any problems. The type and combination of casters selected depends on the function of the equipment. If the equipment has to be turned frequently and steered in different directions, swivel casters are crucial. If, on the other hand, the equipment is mostly moved in a straight line, rigid casters offer a more stable ride.