shopping carts in supermarkets, or luggage trolleys in airports, have 4 casters underneath. Upon closer inspection, it can be found that the axle and body of the caster are not fixed, but can rotate freely around the vertical axis. Because if the axle is fixed with the car body, the casters can only go straight forward, and the car cannot turn. Similar to the casters of shopping carts, bicycles have a similar phenomenon. If the rotation axis of the bicycle front fork is extended to the ground, its intersection with the ground is always in front of the contact point of the front wheel with the ground. When you push the cart forward with your hands on the seat cushion, the front wheels follow the direction of travel very obediently. If you push the cart backwards, the relative positions of the front wheel and the front fork are exactly opposite, and the side friction force is also pushing in the opposite direction, and the front wheel will sway from side to side.
Product Description
From Light duty to Heavy duty Casters And Wheels, our casters reply to every application including Logistics Equipment, Medical Equipment, Supermarket Trolley, Cleaning Equipment, Furniture and etc.
Kaiping City Sunnywah Electronic CO.,LTD, has a full set of advanced digital manufacturing and inspection device, outstanding managerial and technical staff and perfect Management. We are familiar with the standard from different country, for America, Europe, Korea, Japan and so on. The leading product including: toolbox, Heavy Duty Castors with welding steel housing, industrial caster, military caster, Medical Caster, shopping Trolley Casters, scaffolding caster, Trolley casters, light-duty caster etc... Products are mainly exported to Europe, US, Japan, Korea, and Southeast Asia by the OEM basis.
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