Collins TORQdiscs are lightweight composite flexible couplings used in power transmission applications, especially within the actuation systems of aircraft wings.
The assembly provides lower weight than an equivalent crowned spline joint, a reduction in system axial loads. This is a result of compliance, zero maintenance, zero backlash, low power loss, low wear, high fatigue resistance and fast, flexible installation. TORQdiscs are fully scalable for different torque requirements. This technology is currently featured on the Bombardier CSeries.