Product Details:

REXROTH 0608830161 is a standard SZ3 square drive output adapter for Bosch Rexroth modular servo nutrunner spindle, used to connect the gearbox output end with different socket tools. It adopts high-strength alloy steel structure, designed for medium torque repetitive bolt fastening tasks on automotive assembly lines. This legacy mechanical component is discontinued, and most available stock on the market are spare replacement parts for old fastening stations.

This square drive transmits torque output from the spindle gearbox to the socket tool, cooperating with torque transducer and angle feedback to complete closed-loop torque and angle fastening control. The standardized SZ3 interface ensures interchangeability for matched Rexroth spindle modules. It is a purely mechanical transmission part without built-in sensor or brake. Separate shielded signal wiring layout reduces electromagnetic noise interference inside industrial control cabinets equipped with inverters and welding equipment.

This variant is mechanical output adapter without integrated holding brake. It is widely installed on rotary multi-station fastening fixtures, engine assembly stations and household appliance bolt joining lines. The quick-change locking structure supports fast replacement of sockets and adapters, shortening product changeover time for mixed-model production. The contact surface is hardened for wear resistance, and the internal cavity is filled with long-life high-temperature grease to reduce friction during continuous cyclic fastening operation. The adapter housing reaches IP54 protection grade to resist workshop dust and incidental coolant splash. Optimized square tooth profile reduces impact and backlash greatly, maintaining stable torque transfer for safety-critical bolt joints.

It cooperates with Rexroth tightening spindle, transducer and controller, all tightening parameters and sequences are configured via Rexroth tightening software. The compact SZ3 body fits inside narrow rotary indexers and limited automation installation space. Every finished adapter passes factory validation including torque loading test, wear inspection, dimensional verification and vibration endurance test to guarantee stable performance in multi-shift automated fastening production lines.

It is widely deployed on automotive engine and transmission assembly stations, new energy battery module fastening lines, mechanical component assembly fixtures and multi-spindle bolt locking automation cells. Typical application scenarios include spindle output driving modules, medium torque rotary fastening units, mixed-model fastening tool interfaces and torque calibration fixtures. Automation integrators select this Rexroth SZ3 square drive adapter for its high wear resistance, standard interchangeable interface and seamless matching with Rexroth nutrunner spindle system.