1.R-roller
R-roller Conveyor Chains have rollers with an outer diameter bigger compared to the width of plates.
Because the rollers can conveniently roll, the chain is appropriate for running about the floor though the rollers get the dwell load.
2.F-roller
F-roller Conveyor Chains have rollers with the same outer diameter as that of R-roller but with flanges.
Because the flanges can get the force acting about the lateral sides on the chain, the chain is appropriate for getting both a live load in addition to a lateral load.
3.M-roller
M-roller Conveyor Chains have rollers with an outer diameter slightly smaller compared to the width of plates.
An M roller is made for smoother engagement using the sprockets. Because the chain is light in excess weight, it is ideal 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 appropriate for vertical conveyance in which rollers are significantly less more likely to be worn.
five.BR- and BF- Rollers (with built-in bearings)
BR- and BF- Roller Conveyor Chains have primarily identical construction to R-roller and F Conveyor Chains, respectively, except for the bearings within for smoother rotation.
6.UR- and UF- Rollers (big clearance amongst bushing and roller)
UR- and UF- Roller Conveyor Chains have mainly identical construction to R-roller and 
F Conveyor Chains, respectively. Nevertheless, the clearances among the outer diameter of bushings plus the inner diameter on the rollers are enlarged to stop the rollers from fixing when foreign issues enter.
