1.R-roller
R-roller Conveyor Chains have rollers with an outer diameter greater than the 
width of plates.
Since the rollers can easily roll, the chain is ideal for working around the floor whilst the rollers get the live load.
2.F-roller
F-roller Conveyor Chains have rollers with all the identical outer diameter as that of R-roller but with flanges.
Because the flanges can receive the force acting on the lateral sides on the chain, the chain is appropriate for obtaining both a dwell load as well as a lateral load.
three.M-roller
M-roller Conveyor Chains have rollers with an outer diameter slightly smaller compared to the width of plates.
An M roller is built for smoother engagement together with the sprockets. Since the chain is light in excess weight, it’s suitable for vertical conveyance.
4.S-roller
S-roller Conveyor Chains have rollers with an outer diameter smaller than that of your M-roller.
The chain is suitable for vertical conveyance the place rollers are less more likely to be worn.
5.BR- and BF- Rollers (with built-in bearings)
BR- and BF- Roller Conveyor Chains have mainly identical structure to R-roller and F Conveyor Chains, respectively, except for the bearings within for smoother rotation.
6.UR- and UF- Rollers (substantial clearance among bushing and roller)
UR- and UF- Roller Conveyor Chains have largely identical structure to R-roller and F Conveyor Chains, respectively. Even so, the clearances among the outer diameter of bushings and also the inner diameter in the rollers are enlarged to avoid the rollers from fixing when foreign matters enter.
