As shown in the sketch, chain rollers work with different teeth on each time of revolution when each roller skip one tooth and sprocket has odd number of teeth. This mechanism allows extension of sprocket life as less wear and abrasion.
S roller type chain can work well with standard roller chain sprocket with more than 30 teeth.

Standard No of “S” Roller type: C2040 – C2120
Standard No of “R” Roller type: C2042 – C2082

• Dimensional Specification (PDF : )