With the gradual improvement of people's living conditions, and now the transportation has become more and more convenient, it seems that travel has become more and more convenient, and more people like the feeling of relaxing themselves through travel, read more, walk more. When you are about to travel, you must bring your suitcase. So should you choose a universal wheel or an airplane wheel?   What is the difference between the universal wheel of the suitcase and the plane wheel? The universal wheel is the so-called movable caster, and its structure allows 360-degree horizontal rotation. Caster is a general term, including movable casters and fixed casters. Fixed casters have no rotating structure and cannot be rotated horizontally but only vertically. These two kinds of casters are generally used in combination. For example, the structure of the trolley is two fixed wheels in the front, and two movable universal wheels in the back near the push armrest.   What is the difference between the universal wheel of the suitcase and the plane wheel   Different nature: the universal wheel is the so-called movable caster, and the structure allows horizontal 360-degree rotation. The casters have no rotating structure and cannot be rotated.   Different characteristics: the vertical distance between the aircraft wheel from the ground to the installation location of the equipment. According to their different uses, the bearing is divided into iron core, aluminum core and plastic core, and the size ranges from 1 inch to 8 inches.   Different stability: the stability of the aircraft wheel is better than that of the universal wheel.   Notes on the use of suitcases:   The trolley cannot be used as a handle: the buffer function of the handle of the suitcase can prevent the weight of the box from causing damage to the trolley, and also avoid the accidental sprain caused by the weight of the box when lifting the luggage, so when lifting the box, it is impossible to Lift the box directly with the lever, instead of using the handle.   Heavy fall and heavy pressure: If the luggage is stressed beyond the pressure that it can bear, it will still cause damage. The hard case will protect the items in the case better than the soft case. The soft case can use more space. Different uses, choose The right box is important.   Damage to the wheels: The wheel material of the suitcase has the characteristics of wear-resistant and slippery (smooth dragging). Please lift the box when going up and down the steps or crossing the ditch. When the wheel hits the ground, it causes a lot of impact, causing damage to the wheel.​   Universal caster means that the bracket installed on the caster wheel can rotate 360 degrees horizontally under dynamic load or static load. There are many kinds of materials for making universal wheels, the most common materials are: nylon, polyurethane, rubber, cast iron and other materials. Widely used in mining, mechanical equipment, electronic equipment, medical equipment, engineering decoration, textile, printing and dyeing, furniture, logistics equipment.   warehousing, turnover vehicles, chassis, cabinets, equipment, electromechanical, dust-free workshops, production lines, large supermarkets, etc. industry and various fields. According to their different uses, the bearing is divided into iron core, aluminum core, plastic core, and the size ranges from 1 inch to 8 inches. Among them, iron core and aluminum core are generally heavy-duty load-bearing wheels, which are often equipped with brakes.