1, choose the wheel material: first consider the use of the size of the road surface, obstacles, the use of the site on the residual material (such as iron filings, grease), the environmental conditions (such as high temperature, room temperature or low temperature) and the weight of the wheel can carry and other different conditions to decide to choose the appropriate wheel material. For example, rubber wheels are not resistant to acids, grease and chemicals, while super polyurethane wheels, high-strength polyurethane wheels, nylon wheels, steel wheels and high-temperature-resistant wheels can be applied to different special environments.
2, calculate the load capacity: in order to be able to calculate the various casters need to load capacity, you must know the weight of the transportation equipment, the maximum load and the number of single wheels and casters used. A single wheel or caster required load capacity is calculated as follows:
T=(E+Z)/M×N:
---T= single wheel or caster required load capacity;
---E=self-weight of the transport equipment;
---Z=maximum load;
---M=number of single wheels and casters used;
--N=safety factor (about). --- N = safety factor (about 1.3-1.5).
3, decide the size of the wheel diameter: usually the larger the diameter of the wheel the easier it is to push, the greater the load capacity is also the greater at the same time also better able to protect the ground from damage, the size of the wheel diameter should be considered first of all the weight of the load and the load under the starting thrust of the truck to decide.
4, wheel material hard and soft choice: usually wheels have nylon wheels, super polyurethane wheels, high-strength polyurethane wheels, high-strength artificial rubber wheels, iron wheels, pumping wheel. Super polyurethane wheels, high-strength polyurethane wheels regardless of indoor and outdoor ground travel, can meet your handling requirements; high-strength synthetic rubber wheels can be applied to hotels, medical equipment, floors, wooden floors, tile floors, etc. require walking on the ground when the noise level is small quiet travel; nylon wheels, iron wheels for the ground is uneven or the ground has a material such as iron filings on the ground of the site; and pumping the wheel is suitable for the light loads and the road is soft and uneven occasions. flat occasions.
5, rotating flexibility: the larger the wheel rotates, the more labor-saving, roller bearings can carry heavier loads, rotation resistance: single wheel mounted on a high-quality (bearing steel) ball bearings, can carry heavier loads, rotation is lighter, flexible and quiet.
6, temperature conditions: cold and high-temperature occasions have a great impact on the casters, polyurethane wheels in minus 45 ° C at low temperatures, rotating flexibly, high-temperature wheels at high temperatures of 275 ° C under the rotation of lightweight.
Special note: because 3 points to determine a plane, when the number of casters used is 4, the load should be calculated according to 3. 1, usually choose the appropriate wheel frame first consider the weight of the casters bearing such as supermarkets, schools, hospitals, office buildings, hotels and other places, due to the floor is good, smooth and carry goods lighter, (each caster bearing 10-140kg), suitable for the choice of thin steel plate (2-4mm) stamping molding of the plating of the wheel frame, the wheel frame is light, flexible operation, quiet and beautiful, this plating wheel frame according to the arrangement of the bead This plating wheel frame is divided into double rows of beads and single rows of beads. If often moved or carried when the application of double-row beads.
2, in factories and warehouses and other places, cargo handling is very frequent and heavy load (each caster load in 280-420kg) is suitable for the use of thick steel plate (5-6 mm) stamping and hot forging and welding of the double rows of beads of the wheel frame.
3, if used to carry heavy loads such as textile factories, automobile factories, machinery factories, etc., due to the heavy loads and long walking distances within the factory (each caster loaded at 350-1200kg), it should be selected to thick steel plate (8-12mm) cut and welded wheel frame, the movable wheel frame using a plane ball bearings and ball bearings in the base plate, so that the casters can withstand the heavy loads, rotating and flexible, impact resistance and other functions. The casters can withstand heavy loads, rotate flexibly, resist impacts and other functions. 1、Telring bearing: Telring is special engineering plastics, suitable for wet and corrosive places, rotating flexibility in general, resistance.
2, roller bearings: heat-treated roller bearings can carry heavy loads, rotation flexibility in general.
3, ball bearings: selection of high-quality bearing steel made of ball bearings, can carry heavier loads, suitable for the requirements of flexible rotation and quiet occasions.
4, plane bearings: for high and extra high load and high speed occasions. 1, avoid overweight.
2, do not offset.
3, regular maintenance, such as regular oiling, timely inspection of screws