The Hägglunds torque arm drive system (TADS) is completely self-contained and comes with either internal splines or a hollow output shaft with a compression coupling that mounts directly to a machine’s drive shaft. The direct-drive system eliminates gearboxes and the need for heavy pedestal foundations. Flexible shaft couplings and associated alignment issues, extra-long hoses or lines and control lines between the power unit and motor also are eliminated. TADS delivers maximum torque from zero speed with infinite start, stop and reverse. The unit features fast hydraulic pump compensators that can help to reduce wear.