ANSI #41 carbon steel open-ended roller chain, 59 pitches, no-loop linear configuration, for Genie commercial door operators. This is a genuine Genie OEM replacement part designated Genie 111584.3059.S, classified as Roller Chain Linear. Material: Carbon steel. Dimensions: 59 pitches x 0.500 in pitch = 29.500 in length (open-ended/linear); roller dia 0.306 in; inner width 0.250 in. Mounting: Open-ended linear chain anchored at both ends within trolley-drive operator rail system.
A: 'No Loop' means this chain is supplied as a straight open-ended linear section, not joined into a continuous loop. It is designed for linear trolley-drive applications where the chain is anchored at each end.
A: ANSI #41 specifies a 0.500 in (1/2 in) pitch, 0.306 in roller diameter, and 0.250 in inner width per ANSI B29.1.
A: The '3xxx' prefix in Genie's 111584 series indicates a special or no-loop (open-ended) configuration, distinguishing it from standard loop variants.
A: Cross-reference the 111342 series for ANSI #41 loop (continuous) chain variants if a closed-loop configuration is required for your specific operator model.
A: At 59 pitches with a 0.500 in pitch, the total linear length is 29.500 in. Confirm this matches the required trolley travel length for your specific operator model.
