Product Details:

REXROTH 608701018 is a compact servo tightening spindle from Bosch Rexroth legacy nutrunner system, fitted with resolver analog feedback and quick-change output interface. It features compact body size and stable torque repeatability, designed for medium-torque bolt fastening tasks on automotive assembly lines. This old tightening spindle is discontinued, and most available units are refurbished spare parts for existing production lines.

This tightening spindle transmits resolver angle and speed signals to matched Rexroth tightening controller for closed-loop torque and angle monitoring. Resolver feedback delivers strong anti-interference performance in workshop environments with vibration. It supports multiple tightening strategies including torque control plus angle supervision, and homing procedure is required after power cycle to establish rotation reference. Separate power and feedback wiring reduce electromagnetic noise interference inside industrial electrical cabinets.

This variant is non-brake integrated spindle design, suitable for multi-station rotary fastening fixtures, powertrain component assembly stations and household appliance bolt joining lines where static locking is handled by external fixture structure. The quick-change output interface allows fast replacement of sockets and adapters to shorten product changeover time. The internal 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 minor splash. Optimized internal transmission structure suppresses torque ripple greatly, maintaining consistent tightening precision for quality-critical bolt joints.

It supports torque control, angle monitoring and step tightening sequences, and all tightening parameters can be configured via Rexroth tightening software. Compact form factor allows installation in narrow rotary indexers and tight automation spaces. Every finished spindle passes factory validation before shipment, including resolver signal calibration, torque repeatability test, insulation resistance inspection and cycle endurance test to guarantee stable performance in multi-shift automated fastening production lines.

It is widely deployed on automotive engine and gearbox assembly stations, new energy battery module fastening lines, metal component assembly fixtures and small packaging 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 compact Rexroth spindle for its reliable resolver feedback, small footprint and seamless compatibility with Rexroth tightening control units.