The internal bearings and shaft structure of the rubber roller are very precise, and any slight difference can directly affect the effectiveness of use. If the lubrication of the bearings and shaft heads is not very good, it is easy to cause wear, and it will seriously affect the quality of the rubber rollers, thereby affecting the quality of the product.

The second classification method divides rubber into three categories: general rubber, semi general rubber, also known as large variety special track rubber, and special rubber, also known as small variety special rubber.

Rubber molecular chains can be divided into two categories: unsaturated rubber and saturated rubber. Unsaturated rubber, due to its double bonds on the molecular chain, generally has high chemical activity and is easy to react with vulcanizing agents. The vulcanization rate is fast, but it is also easy to react with oxygen, ozone, etc. It has poor aging resistance and low usage temperature; Meanwhile, due to the isolation effect of double bonds, the molecular activity is high, the elasticity is high, and the cold resistance is good.

Rubber can also be divided into rubber with strong self-healing properties and rubber with weak self-healing properties. The former is also known as crystalline rubber, while the latter can be divided into microcrystalline rubber (such as butyl rubber) and amorphous rubber (such as styrene butadiene rubber).