one.R-roller
R-roller Conveyor Chains have rollers with an outer diameter greater than the width of plates.
Since the rollers can quickly roll, the chain is ideal for running within the floor whilst the rollers acquire the dwell load.
two.F-roller
F-roller Conveyor Chains have rollers with all the very same outer diameter as that of R-roller but with flanges.
Since the flanges can get the force acting to the lateral sides of the chain, the chain is appropriate for obtaining the two a dwell load and also a 
lateral load.
three.M-roller
M-roller Conveyor Chains have rollers with an outer diameter slightly smaller sized than the width of plates.
An M roller is developed for smoother engagement together with the sprockets. Because the chain is light in weight, it can be appropriate for vertical conveyance.
four.S-roller
S-roller Conveyor Chains have rollers with an outer diameter smaller than that with the M-roller.
The chain is ideal for vertical conveyance in which rollers are much less likely to be worn.
5.BR- and BF- Rollers (with built-in bearings)
BR- and BF- Roller Conveyor Chains have largely identical structure to R-roller and F Conveyor Chains, respectively, except for your bearings within for smoother rotation.
6.UR- and UF- Rollers (substantial clearance between bushing and roller)
UR- and UF- Roller Conveyor Chains have generally identical framework to R-roller and F Conveyor Chains, respectively. Even so, the clearances concerning the outer diameter of bushings as well as inner diameter in the rollers are enlarged to prevent the rollers from fixing when foreign matters enter.
