The roller chain coupling has the advantages of simple structure (consisting of four components), convenient assembly and disassembly, no need to move the two connected shafts during disassembly, compact size, light weight, definite compensation capability, low requirements for installation accuracy, stable operation, long service life and low cost. The roller chain coupling should operate under good lubrication and with a protective cover.

The roller chain coupling is an ideal product for solving the difficult corrosion problems caused by high-temperature dilute sulfuric acid, hydrofluoric acid, hydrochloric acid and various other acids (mainly based on actual reports) as well as other corrosive substances. It is resistant to positive and negative forces, vacuum, alternating temperature changes, and the lining layer remains unaffected. It can solve the delamination problem of equipment with polytetrafluoroethylene inner lining. The suitable processing accuracy is an inherent characteristic of this process. Apart from the tolerance range, the size of the part and the batch quantity are also taken into consideration. When processing a large number of parts, a tolerance of 5 μm is maintained; when processing two cooperating parts, a tolerance of 2 μm is maintained, or small-diameter face mills are used for processing on a machine with a positioning accuracy of 0.3 μm, etc. All of these belong to the category of high-precision processing. That is to say, the size of the part and the batch quantity of the workpiece determine the difficulty of achieving certain specific tolerances.