20R steel single row:

Roller diameter options: 25mm, 32mm, 38mm, 42mm, 50mm, 57mm, 60mm, 76mm, 80mm, 89mm. Roller material selection: carbon steel galvanized, carbon steel chrome-plated, carbon steel coated rubber, aluminum alloy, stainless steel, ABS, etc. Choice of roller types: unpowered roller, single chain roller, double chain roller, "O" belt roller, tapered roller, grooved roller. Roller fixing method: spring press-in type, internal tooth shaft type, full flat tenon type, through shaft pin hole type.

According to the process flow: calendering roller, smoothing roller, casting roller, etc.;

According to function and purpose: heating roller, cooling roller, take-off roller, idler, etc. According to the structure, there are seamless steel pipe roller, forging and centrifugal casting roller, etc.

Roller production requirements

1. The roller should have sufficient rigidity to ensure that the bending deformation does not exceed the allowable value under heavy load.

2. The surface of the roller should have sufficient hardness, generally required to reach HRC50 degrees or more, with strong corrosion resistance. The coating has anti-stripping ability to ensure that the working surface of the roller has good wear resistance and corrosion resistance.

3. The working surface of the roller should be finely processed to ensure dimensional accuracy and surface roughness. The roughness should be above Ra0.16, without pores or grooves. The wall thickness of the working surface of the roller must be uniform, otherwise the temperature of the roller surface will be uneven and the product quality will be affected.

4. The material of the roller should have good thermal conductivity, usually chilled cast iron, cast steel or molybdenum-chromium alloy steel in special circumstances, whether it is heating or cooling, can achieve rapid and uniform.