Ruland Manufacturing Co., Inc. MOCT41-15-A Oldham Coupling Assembly

The MOCT41-15-A is a clamp‑style Oldham coupling hub from Ruland that serves as the hub portion of a three‑piece Oldham coupling assembly, pairing with a center disk and a companion hub to transmit torque between shafts. It features a 15 mm bore, a 41.3 mm outside diameter, and a hub length of 50.8 mm, with a bore penetration depth of 18.0 mm, all in anodized aluminum for light weight and rigidity. A single M4 socket‑head cap screw in alloy steel secures the clamp, and the hardware is designed to work with the three‑piece disk system in mind, with disks available in three materials to tailor performance, damping, and torque characteristics. This hub is engineered to accommodate misalignment in precision drives, including high parallel misalignment up to about 10% of the outer diameter, while maintaining low bearing loads and reducing vibration when operated with the matching disk and second hub at speeds up to roughly 6,000 RPM. All components are RoHS3 and REACH compliant and are machined in Ruland’s Marlborough, MA facility from North American‑sourced bar stock, ensuring tight tolerances and consistent quality for demanding motion‑control applications.