Product Details:

REXROTH 0608801006 is a modular servo tightening spindle for Bosch Rexroth legacy nutrunner system, equipped with resolver analog feedback and standard quick-change square drive interface. It is built to deliver stable medium-high torque output for safety-critical bolt joints, widely adopted on automotive engine and transmission assembly lines. This old-generation spindle has been phased out of serial production, and most available stock on the market are refurbished spare units for maintenance of existing fastening stations.

This tightening spindle transmits resolver rotor angle and speed signals to the matched Rexroth tightening controller for closed-loop torque and angle supervision. Resolver feedback provides excellent resistance against vibration, dust and electromagnetic interference in harsh machining workshops. It supports multi-step tightening sequences such as torque-controlled tightening plus angle monitoring, and homing operation is required after each power cycle to establish rotation reference. Separate power and feedback cable terminals reduce signal noise interference inside densely arranged industrial control cabinets.

This variant is non-brake integrated spindle design, suitable for rotary multi-station fastening fixtures, powertrain assembly stations and heavy component bolt joining lines where static locking is handled by external fixture mechanism. The standardized square drive interface supports fast replacement of sockets and adapters to shorten product changeover time for mixed-model production. The internal servo motor winding uses Class F insulation material and integrates thermal sensor for real-time temperature monitoring to prevent overheating damage during continuous cyclic fastening operation. The spindle housing reaches IP54 protection grade to resist workshop dust and incidental liquid splashing. Optimized internal gear and bearing structure suppress torque ripple greatly, maintaining consistent tightening precision for high-quality bolt connections.

It supports torque control, angle monitoring and multi-stage tightening strategies, and all process parameters can be configured and saved via Rexroth tightening software. The modular structure allows separate replacement of motor, gearbox and measuring transducer for convenient on-site maintenance. Every finished spindle passes factory validation before shipment, including resolver signal calibration, torque repeatability test, insulation resistance inspection and vibration endurance test to guarantee stable performance in multi-shift automated fastening production lines.

It is widely deployed on automotive powertrain assembly stations, new energy battery module fastening lines, heavy mechanical component assembly fixtures and large gearbox bolt locking automation cells. Typical application axes include rotary tightening units, multi-spindle fastening modules, angle-controlled bolt driving stations and mixed-model assembly fastening platforms. Automation integrators select this Rexroth spindle variant for its robust resolver feedback, stable medium-high torque performance and seamless compatibility with Rexroth tightening control ecosystem.