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The LiftMaster 71-1550B34LGH Sprocket Kit is a precision-engineered 34-tooth drive sprocket designed for LiftMaster operator systems that utilize a 1" bore with a 1/4" keyway. Correct tooth count, bore size, and keyway configuration ensure secure mounting and smooth engagement with compatible #50 chain systems during regular operation.
Built for durability in commercial and high-cycle environments, this sprocket enhances power transfer while helping reduce wear on related components. Replacing worn sprockets with the correct specifications supports efficient performance and long-term reliability of the operator’s drive assembly.
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