All Categories > Roller Chain / Leaf Chain > Standard Roller Chains > Item # RC20B-2 Download PDF Download PDF Printable Page Email This Page Save To Favorites Please wait… Item # RC20B-2, Standard Roller Chains List Price QUOTE larger image Roller Chains are one of the primary ways to provide mechanical power transmission. Roller chains are available from a pitch of 1/4" to 3" ( the distance between the centers of adjacent flexing joints). A chain is noteworthy in the options for corrosion resistance available as well as the attachments that can be added to accomplish a specific task. Conforms to JIS and ANSI standards.Alternative dimensions are available, for critical engineering or construction requirements please confirm these dimensions with Emerson Bearing. Unit of Measure: Imperial Specifications (P) Pitch 1-1/4 in Ult. Tensile Strength Min. 170.0 kN38636 lb Configuration Duplex Chain Type ISO British Standard Alternative P/N BS-D-563