Atlas Copco QCS-T34025 Servo Controller

The Atlas Copco QCS-T34025 Servo Controller is a compact servo controller assembly designed for Atlas Copco's QCS/T tightening-system family, where it serves as the central control module that coordinates servo motor actuation for automated assembly or fastening applications. The unit is specified as a 340-volt class servo controller, carries Atlas Copco part number QCS-T34025, and has an alternate reference of 4240-0330-81; it weighs about 6.17 pounds (2.80 kilograms), making it a dense but installable module for machine frames with proper enclosure and wiring. Current market status is 'discontinued by manufacturer' per distributor listings, and genuine new stock is rarely available; buyers typically source this module as used, refurbished, or from gray-market channels, with attention to correct firmware and connector compatibility. Industry catalogs and service manuals label it as QCS-T 340 25 Servo Controller Module, reinforcing its role as the control component for Atlas Copco tightening systems rather than a standalone drive.