* PSR=Plastic side Roller Type, *SSR=Steel side Roller Type
* The line of Roller main chain indicated on drawing is S-roller, dotted line is R-roller type.
* 2040~= standard 'S '-Roller Type, 2042~ = oversize 'R'-Roller Type
* A = steel roller chain with plastic side roller
* B = steel roller chain with steel side roller
* C = plastic roller chain with plastic side roller
1. Only no.2040, 2050, 2060 could be produced by Chain type with plastic R-roller.
2. Attached the side roller at every link for Z-type and attached the side roller at every 2 links for K-type is the weight standard.
* PSR=Plastic Side Roller / SSR=Steel Side Roller
* When ordering, please indicate installation method (inner or outer plate installation) and spacing of guide plate.