Pu castor bearing ability is your ideal choice
Pu castor casting shrinkage rate combined with actual situation to choose. Size requires precise casting, casting shrinkage according to try pouring castings. The same casting, due to structural reasons, the axial and radial or length, width and height of three directions of shrinkage rate may not be consistent. For more precise casting size requirement, different shrinkage rate must be taken in all directions. In actual production, the general casting, especially the casting size is not big, in every direction with the same shrinkage rate, although this will cause some error, but the error is general not big, which greatly facilitate mold processing and manufacturing. Pu castor bearing ability is your ideal choice for heavy duty caster wheel diameter choice: according to the diameter of the wheel, the greater the principle of rotating the more flexible, heavy-duty casters commonly used specifications are 4 inches castor, castor 5 inches and 6 inches castor, 8 inches castor, 10 inches castor, 12 inches castor, track, caster can use 16 inches and 18 inches of the wheel. Heavy, of course, can also be customized special specifications, for example, low center of gravity heavy-duty casters, minimum 2 inches castor, can also be bearing more than 360 kg. High elastic polyurethane casters regular heavy duty castor manufacturers should have professional testing equipment, including castor walking test, load test and other professional castor testing equipment, otherwise, cannot judge caster wheel load requirements. Heavy duty castor wheels material selection; Heavy duty castor is used for heavy equipment moving, so the heavy duty castor wheels generally USES hard single wheel tread. Wheel, such as nylon wheel, cast iron forging steel wheel, hard rubber wheel, pu wheel, wheel and phenolic resin is the ideal choice. Various sizes in the casting cooling shrinkage can be made under: obtained from shrinkage = casting size & times; Casting shrinkage factors, which affect the casting shrinkage is more, the main are: casting material casting, casting shrinkage rate is different also. For example, shrinkage rate is greater than gray cast iron cast steel; Gray cast iron, sulfur in shrinkage rate increases, silicon for shrinkage rate decreases. The structure of the casting complex contraction of the casting is difficult, the casting shrinkage rate decrease. Heavy duty castor manufacturers choose: at present, many domestic manufacturer of casters, the good and bad are intermingled, so, the user should have to choose heavy duty castor manufacturers, and can not blindly pursue low price, in order to avoid because of the reason of castor, causes the damage of the product loaded, cause unnecessary damage to property. Choose the professional heavy-duty casters manufacturers, users can reference from the following points: regular heavy duty castor manufacturers, general can provide the necessary technical drawings and all relevant parameters; Pu castor, for example, the same composition of casting steel, due to the structure shape, with the largest free shrinkage of shrinkage. The cast rolled cast concession sex good, casting shrinkage rate increased. For example, with a wet sex and sodium silicate sand mold cast castings than dry type casting casting shrinkage rate. Similarly, increase with the size of the casting, casting the rolled back, the casting shrinkage rate is reduced. Of forged steel wheel and pu castor wheels especially for track, castor wheels. In general, the caster casting during solidification, its parts size is generally going to shrink, casting size smaller percentage, called casting line shrinkage or casting shrinkage rate. Manufacturing mold ( Including core box) , according to determine the casting shrinkage rate, amplify mold, to ensure the size of cooling after casting meets the requirements. ( )