Dollies are a quick and easy way to move lightweight containers and carriers. Dollies range in size from the dimensions of one or more small lightweight containers through to a half Euro pallet or an industrial pallet. They tend to use four swivel castors attached to a frame. Dollies can also be pulled with a tugger train using the drawbar. In this case, the dollies are fitted with two fixed castors to keep them on track.
The wheels and castors used by dollies have to meet a wide range of requirements to make sure that they are easy and flexible to use. Probably the most important consideration is ensuring a high level of manoeuvrability in all directions by minimising rolling and swivel resistance. Low-noise operation, electrical conductivity and compact designs are frequently required.
That’s why dollies frequently use wheels and castors made from nylon or polypropylene. These provide a very low level of rolling and swivel resistance and guarantee smooth motion on even surfaces. The softer alternatives of PATH with a high-quality thermoplastic polyurethane tread and the TPA series with a thermoplastic rubber-elastomer are more suitable for uneven surfaces. Electrically conductive versions of both series are also available. Wheels with soft rubber tyres in the “Blickle SoftMotion” series are frequently used whenever it is particularly important to have a quiet tread.