The LiftMaster 19-40HL Half Link (#40) is a genuine OEM offset link designed for use with ANSI #40 roller chain in LiftMaster chain-drive systems. Commonly used on sliding gate operators, this replacement part lets installers fine-tune chain length by a half-pitch to achieve proper tension and smooth engagement with drive sprockets. It’s an ideal solution for repairs, routine maintenance, or upgrades on residential and commercial slide gate applications where #40 chain is specified.
As a single-pitch offset link, the 19-40HL enables an odd-number chain configuration and can be paired with a compatible #40 connecting link to complete the loop as needed. For best results, install on clean, undamaged #40 roller chain, verify sprocket alignment, and set chain tension per the operator’s manual. Always disconnect power and follow lockout/tagout and manufacturer safety instructions during service. This part is compatible with LiftMaster gate operators and other chain-driven mechanisms that use ANSI #40 roller chain, helping restore reliable operation with an exact-fit, LiftMaster-branded component.