one.R-roller
R-roller Conveyor Chains have rollers with an outer diameter more substantial than the width of plates.
Because the rollers can easily roll, the chain is ideal for 
running about the floor when the rollers receive the live load.
2.F-roller
F-roller Conveyor Chains have rollers with all the very same outer diameter as that of R-roller but with flanges.
Because the flanges can get the force acting to the lateral sides in the chain, the chain is suitable for getting the two a reside load along with a lateral load.
three.M-roller
M-roller Conveyor Chains have rollers with an outer diameter somewhat smaller sized than the width of plates.
An M roller is built for smoother engagement with all the sprockets. Since the chain is light in fat, it can be appropriate for vertical conveyance.
four.S-roller
S-roller Conveyor Chains have rollers with an outer diameter smaller sized than that on the M-roller.
The chain is ideal for vertical conveyance where rollers are significantly less more likely to be worn.
5.BR- and BF- Rollers (with built-in bearings)
BR- and BF- Roller Conveyor Chains have mostly identical framework to R-roller and F Conveyor Chains, respectively, except for the bearings inside for smoother rotation.
six.UR- and UF- Rollers (big clearance amongst bushing and roller)
UR- and UF- Roller Conveyor Chains have largely identical construction to R-roller and F Conveyor Chains, respectively. Having said that, the clearances involving the outer diameter of bushings along with the inner diameter on the rollers are enlarged to avoid the rollers from repairing when foreign matters enter.