This hub has a 13mm bore, 37.0mm OD, and 7.0mm length.
This Controlflex hub is RoHS and REACH compliant and manufactured by Schmidt Kupplung in Germany. Ruland supplied Controlflex couplings are a lightweight, low inertia, and zero-backlash coupling designed for use in encoders, tachometers, resolvers, and light duty power transmission applications. The use of two inserts allows for higher torque capacity than single insert styles. CntrlFlx Cplng Hub, Double, Bore 13mm, OD37.