The material of the roller skin in the double roller crusher can be mainly classified into three types: high manganese steel has good toughness but average wear resistance, suitable for crushing soft materials; alloy cast steel has a balanced performance and can adapt to complex working conditions; while high chromium alloy has extremely high hardness and a deep wear layer, it is the “wear-resistant hero” for handling high-hardness materials such as pebbles and granite. Its service life can reach 1-3 years, and it is currently recognized as the most efficient choice in the industry.

Roller Sand Making Machine

The reason why HSM prioritizes recommending high chromium alloy rollers is that we understand that the biggest pain point for sand plant owners is “frequent machine shutdowns for replacing wear parts”. Through unique scientific ratios of chromium, molybdenum, and nickel, as well as strict heat treatment processes, HSM’s high chromium alloy rollers ensure high surface hardness while retaining sufficient toughness, effectively dealing with rock compression, thereby fundamentally reducing the high costs of later maintenance and replacement of rollers. The manufacturer specifically reminds here: No matter how hard the material is, it must have a “protective umbrella”.

sand making machine roller skin

Although high chromium alloy is resistant to wear, if iron blocks and other non-crushing substances are mixed in, it is still prone to chipping when colliding. Therefore, it is necessary to be paired with a full hydraulic intelligent protection system. When encountering hard objects, the system can automatically avoid them in an instant. Only when “high-quality high chromium material” and “intelligent hydraulic emergency retreat” work together can the equipment truly achieve long-term stable operation.