1.R-roller
R-roller Conveyor Chains have rollers with an outer diameter more substantial than the width of plates.
Because the rollers can conveniently roll, the chain is ideal for running over the floor although the rollers receive the live load.
2.F-roller
F-roller Conveyor Chains have rollers using the identical outer diameter as that of R-roller but with flanges.
Because the flanges can receive the force acting around the lateral sides from 
the chain, the chain is appropriate for acquiring the two a reside load as well as a lateral load.
3.M-roller
M-roller Conveyor Chains have rollers with an outer diameter slightly smaller sized compared to the width of plates.
An M roller is created for smoother engagement with the sprockets. Since the chain is light in weight, it is actually suitable for vertical conveyance.
four.S-roller
S-roller Conveyor Chains have rollers with an outer diameter smaller sized than that of the M-roller.
The chain is appropriate for vertical conveyance wherever rollers are significantly less likely to be worn.
five.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 your bearings within for smoother rotation.
six.UR- and UF- Rollers (huge clearance between bushing and roller)
UR- and UF- Roller Conveyor Chains have typically identical structure to R-roller and F Conveyor Chains, respectively. However, the clearances concerning the outer diameter of bushings and also the inner diameter in the rollers are enlarged to prevent the rollers from fixing when foreign issues enter.
DK Conveyor Chains Typical Conveyor Chain
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