The Genie 111005.0002.S is a steel shaft adapter coupling designed for Genie commercial door operators, connecting a 1-1/4-inch door torsion shaft bore to a 1-inch operator output shaft. This adapter bridges the dimensional mismatch between a larger-bore door shaft and a standard 1-inch operator drive shaft, transmitting full commercial-duty torque through a keyed or clamped interface. It is the larger-bore counterpart to the 111005.0001.S, which handles matched 1-inch-to-1-inch shaft connections, and the two are not interchangeable. Selecting the correct adapter based on measured shaft diameters is essential to prevent slippage, shaft scoring, and premature failure under cyclic commercial loading. Steel construction ensures dimensional stability and torque capacity appropriate for the GPower and GCL/GH commercial operator platforms.
A: The 111005.0002.S adapts a 1-1/4-inch door torsion shaft bore to a 1-inch operator output shaft, bridging a dimensional mismatch between the two shafts.
A: The 111005.0001.S is for a 1-inch door shaft bore to a 1-inch operator shaft - both the same size; the 111005.0002.S steps up to accommodate a 1-1/4-inch door shaft bore.
A: Measure the outside diameter of the door torsion shaft; if it is 1-1/4 inches and your operator output shaft is 1 inch, the 111005.0002.S is the correct selection.
A: Without the adapter, you cannot properly couple the operator to the door shaft, and any attempt to force mismatched shafts together will cause slippage, vibration, and rapid wear of both components.
A: Steel provides the strength and fatigue resistance needed to transmit the high cyclic torque loads typical of commercial door operators through the full service life of the installation.
