Atra Flex T4-DR Drive Ring T-Flex Flexible Couplings

Designed for the ATRA‑FLEX T-Series T-4 size, the Drive Ring Bolt Kit provides the drive-ring component that completes the four-part close‑coupled coupling (ring hub, flex hub, insert, and drive ring) and enables torque transfer with smooth, maintenance‑free operation. The drive ring fits over the insert and is fastened to the ring hub with high‑strength alloy steel socket head cap screws and high‑collar lock washers, ensuring a secure, precisely aligned connection. As part of the T-Series, these couplings absorb torsional shocks and misalignment—angular, parallel, and axial—while offering lubrication‑free performance and robust service life, with operating temperatures from -60°F to 350°F and support for up to 20" shafts and torque capacities across configurations up to 3.6 million in‑lbs. A nitrocarburized finish provides a corrosion‑resistant option for demanding environments.