Product Details:

REXROTH 0608820115 (4DMC160 SZ4) is a precision strain-gauge torque transducer for Bosch Rexroth modular servo nutrunner spindle, the core measuring component for closed-loop torque and angle fastening control. It features 160Nm nominal measuring range, excellent linearity and repeatability for safety-critical bolt joints on automotive assembly lines. This legacy transducer belongs to the discontinued tightening system series, and most available units are refurbished spare replacement parts for old fastening stations.

This torque transducer converts mechanical torsion load into analog signal, transmitting real-time torque reading to the matched Rexroth tightening controller. Combined with angle feedback signal from encoder or resolver, it realizes dual closed-loop supervision, supporting standard tightening strategies including torque control with angle monitoring and yield point detection. Shielded signal cable layout effectively suppresses electromagnetic interference generated by inverters and workshop equipment, maintaining stable measurement data transmission.

This variant is a standalone sensing component without integrated drive or brake. It is installed between the spindle gearbox and SZ4 square drive output. The standardized SZ4 flange interface supports direct replacement on compatible Rexroth spindle assemblies. The internal strain gauge circuit adopts built-in temperature compensation structure to reduce measurement drift during long-cycle continuous operation. The transducer housing reaches IP54 protection grade to resist workshop dust and incidental coolant splash. Optimized elastic mechanical structure minimizes cross-talk interference and guarantees stable torque reading under vibration load.

It can be calibrated and parameterized through Rexroth tightening software, supporting fastening curve recording and batch production data traceability for assembly quality management. Every finished transducer passes factory validation including static torque calibration, linearity test, cyclic load stability test and vibration endurance test to guarantee reliable measuring performance in multi-shift automated fastening production lines.

It is widely deployed on automotive powertrain and chassis assembly stations, heavy mechanical component fastening lines, new energy battery module bolt joining equipment and static torque calibration fixtures. Typical application scenarios include spindle torque feedback modules, safety-critical bolt measuring units, mixed-model heavy fastening platforms and torque verification fixtures. Automation integrators select this Rexroth 4DMC160 SZ4 transducer for its 160Nm measuring capacity, high linearity analog output and seamless matching with Rexroth nutrunner tightening ecosystem.