If the customer has low quality requirements for various mechanical equipment such as quietness, high speed, energy saving, high precision, dynamic balance, etc., or even requires that the roller does not need too high precision, for example, the coaxiality and straightness can reach 0.2mm level, the machine equipment The requirements are not demanding, but the only requirement is that the price must be favorable. Then we can also produce this type of rollers with ordinary precision in large quantities. Similarly, the roller surface can be treated with chrome plating, Teflon spraying, diamond-shaped anti-skid, rubber coating and other surface treatments. This type of roller is widely used in the head and tail rollers of the assembly line, ordinary pressure rollers, and ordinary passing rollers.