The Genie 111916.2026.S is an OEM sprocket assembly designed for use on Genie J (Jackshaft), H (H-rail), and GH (next-gen H-rail) commercial door operators, fitted for ANSI #50 roller chain (0.625 in pitch). This variant features a 26-tooth drive sprocket with a 1-1/4 inch bore diameter. Selecting the correct tooth count and bore diameter is critical: an incorrect tooth count produces the wrong gear ratio, and an incorrect bore diameter will not fit the operator shaft. The J/H/GH series uses #50 chain and is NOT interchangeable with the MH/MJ series which uses #41 chain. Sold as one sprocket assembly (each).
A: The part number suffix .2026 encodes both the bore size and tooth count. The '20' prefix indicates a 1-1/4 inch bore, and '26' indicates 26 teeth. The related part 111916.0026.S uses a '00' prefix indicating a 1-inch bore with the same 26-tooth count.
A: This sprocket assembly is designed for use with #50 ANSI standard roller chain. Do not substitute #41 or #40 chain, as pitch dimensions differ and substitution will cause premature wear or failure.
A: This sprocket assembly is compatible with Genie J Series, H Series, and GH Series commercial trolley and jackshaft door operators. Verify your specific operator model and output shaft diameter before ordering to confirm the 1-1/4 inch bore matches your shaft.
A: The bore size is critical for proper shaft fit. The 111916.2026.S has a 1-1/4 inch bore. If your operator output shaft is 1 inch in diameter, you would need the 111916.0026.S instead. Installing a sprocket with a mismatched bore will result in improper fit, vibration, and potential drive failure.
A: Genie sprocket assemblies in this series are manufactured to ANSI #50 chain standards. Replacement chain should be ANSI #50 roller chain with a 5/8 inch pitch. Always match the chain pitch to the sprocket designation to ensure proper meshing and drive efficiency.
