one.R-roller
R-roller Conveyor Chains have rollers with an outer diameter more substantial than the width of plates.
Since the rollers can effortlessly roll, the chain is suitable for operating within the floor when the rollers receive the dwell load.
two.F-roller
F-roller Conveyor Chains have rollers with all the similar outer diameter as that of R-roller but with flanges.
Since the flanges can obtain the force acting to the lateral sides 
with the chain, the chain is ideal for receiving both a reside load in addition to a lateral load.
3.M-roller
M-roller Conveyor Chains have rollers with an outer diameter somewhat smaller sized compared to the width of plates.
An M roller is intended for smoother engagement using the sprockets. Since the chain is light in excess weight, it really is appropriate for vertical conveyance.
4.S-roller
S-roller Conveyor Chains have rollers with an outer diameter smaller than that from the M-roller.
The chain is ideal for vertical conveyance where rollers are less prone to be worn.
5.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 that bearings inside for smoother rotation.
six.UR- and UF- Rollers (massive clearance in between bushing and roller)
UR- and UF- Roller Conveyor Chains have largely identical framework to R-roller and F Conveyor Chains, respectively. Nevertheless, the clearances among the outer diameter of bushings along with the inner diameter of your rollers are enlarged to prevent the rollers from repairing when foreign matters enter.