Product Details:

REXROTH 0608820115 (4DMC160 SZ4) is a precision strain-gauge torque transducer for Rexroth modular servo nutrunner tightening spindle, designed for high-repeatability torque measurement within 160Nm range. It serves as the core feedback component for closed-loop fastening control, widely matched with Rexroth tightening spindles and controllers for heavy-duty bolt joint quality monitoring. This legacy transducer model is discontinued, and most available units in the market are refurbished spare parts for old assembly production lines.

This torque transducer converts mechanical torque load into analog strain signal and transmits real-time torque value to the matched Rexroth tightening controller. Combined with angle feedback from encoder or resolver, it realizes dual torque-angle closed-loop supervision, supporting standard tightening modes including torque control with angle monitoring, yield point detection and sequence step fastening. Separate shielded signal cable layout reduces electromagnetic noise interference inside industrial cabinets installed with inverters and switching modules.

This variant is a standalone sensing component without integrated drive or brake. It is installed between the planetary gearbox and the output square drive of the tightening spindle. The standardized SZ4 flange interface supports direct replacement and quick assembly on compatible spindle structures. The internal strain gauge circuit adopts temperature compensation design 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 mechanical structure minimizes cross-talk interference and maintains excellent linearity and repeatability under vibration load.

It can be calibrated and parameterized through Rexroth tightening software, and supports torque curve recording and production fastening data traceability. Every finished transducer passes factory validation before shipment, including static torque calibration, linearity test, cyclic load stability test, insulation resistance inspection and vibration endurance test to guarantee stable measurement performance in multi-shift automated fastening production lines.

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