ESTIC ENRZ-TU003R-S Servo Nutrunner Product Description

Overview

ESTIC ENRZ-TU003R-S is a straight-type servo nutrunner (servo tightening spindle) from ESTIC (艾斯迪克) ENRZ Z50 / Z55 series fastening system. This ENRZ-TU003R-S integrates servo motor, precision torque transducer and angle encoder, delivering closed-loop torque & angle control for bolt/nut fastening. It is widely used in automotive assembly, EV battery assembly, motor production and precision machinery fastening stations for new production line build, retrofit and spare‑part replacement of ESTIC servo tightening tools.

Features

ESTIC ENRZ-TU003R-S adopts built-in high-precision torque sensor and angle encoder, supporting torque control, angle monitoring, yield point tightening and multi-step fastening sequence. This ENRZ-TU003R-S straight spindle achieves high repeat tightening accuracy, with statistical precision ≤ ±2% F.S. under stable condition. ENRZ-TU003R-S supports full fastening curve recording, OK/NG judgement and traceable fastening data. It works paired with ESTIC AU50M / MAU55 / AU55 controller units, supporting fieldbus options including PROFINET, EtherNet/IP, DeviceNet and CC-Link for PLC interlock. The reinforced gear train improves service life under continuous cyclic operation. It supports multi-program switching, screw thread self-tapping detection and cross-thread alarm. Compact straight housing is easy to mount on robot end-effector or fixed fixture, and complies with RoHS and industrial machinery safety requirements.

Specs

• Brand: ESTIC

• Series: ENRZ Z50 / Z55 Servo Nutrunner

• Model: ENRZ-TU003R-S

• Rated torque: 30 N·m

• Effective tightening range: 3–27 N·m

• Max speed: 656 rpm

• Weight: 1.9 kg

• Style: Straight type

• Compatible controller: ENRZ-AU50M-10, ENRZ-MAU55-20-*, ENRZ-AU55-20

• Feedback: Torque transducer + angle encoder

• Accuracy: ≤ ±2% F.S.

• Mounting: Robot flange / fixture mount

• Standard: RoHS compliant

Principle

ESTIC ENRZ-TU003R-S receives fastening program and start command from the ESTIC controller. The servo motor drives the output spindle; the built-in torque sensor and angle encoder feed real-time torque and rotation angle back to the controller. The controller executes the selected fastening strategy (torque priority, angle monitoring etc.). When target condition is reached, the spindle stops automatically and judges fastening result OK or NG. All torque-angle waveform data is stored for quality traceability. Fault signals such as cross thread, torque overshoot and stall are sent to the host PLC.

Applications

ESTIC ENRZ-TU003R-S is deployed in automobile powertrain assembly, new energy battery pack assembly, motor stator & end cover fastening, gearbox assembly and precision automation fixture stations. This straight 30 N·m ESTIC servo nutrunner ensures consistent fastening quality and full data traceability for bolted joints. ENRZ-TU003R-S fits tightening station overhaul and spare replacement of ESTIC ENRZ series servo spindles.

Installation & Maintenance Notes

Follow official ESTIC ENRZ nutrunner manual during installation of ENRZ-TU003R-S. Use correct dedicated tool cable between spindle and controller. Back up fastening programs, torque thresholds and communication parameters before replacement. After replacement, run torque calibration test, verify angle reading and OK/NG output logic. Confirm exact part number ENRZ-TU003R-S; offset type ENRZ-TU003R-O and other torque models cannot be substituted directly.