MUTHEL QM Series Straight & Elbow Head Cordless Torque Tightening Machine | Brushless Handheld Precision Electric Torque Tool
The QM series is a handheld cordless torque tightening machine available in both straight handle and elbow (angle head) configurations. Powered by a 40V 2.5Ah high-capacity lithium battery and driven by a highly durable DC brushless motor with a test life of over 1 million cycles, it delivers stable power output and excellent portability.
Equipped with a high-temperature resistant LCD control panel, it supports digital torque adjustment, 32 programmable presets, and three tightening modes (torque, torque + angle, angle mode). With USB connectivity for PC programming and data download, plus optional wireless configuration for process control and data acquisition, it is ideal for precision assembly in electronics manufacturing, automotive components, new energy parts, and narrow-space working scenarios
- Product Details
- Technical Specification
- After-sale service
Dual-Form Body Design for Full Scene Adaptation
Available in straight handle and 90° elbow head versions, both with a maximum 1/2" square drive head. The elbow design is specially optimized for bolt fastening in confined and narrow spaces, effectively solving the problem of inaccessible operation in compact assembly positions and meeting diverse on-site assembly demands.
Built with a highly durable DC brushless electric motor with a test service life exceeding 1 million cycles, it eliminates carbon brush wear and requires minimal maintenance. Matched with a 40V 2.5Ah large-capacity lithium battery, it delivers strong and continuous power output, getting rid of cable constraints for flexible mobile operation.
Smart Digital Control System with Multi-Process Compatibility
It features digital adjustment and real-time display of torque and working status, with freely adjustable torque values and 32 programmable preset positions for quick process switching. It supports three core tightening modes: torque mode, torque + angle mode and angle mode, adapting to various soft and hard joint assembly processes.
Full-Link Data Management with Flexible IoT Expansion
With a USB interface, it can be easily connected to a PC for parameter programming and operation data download. Optional wireless configuration and I/O port connection realize real-time process control and data acquisition. It also supports multi-level user authority management, with buzzer notification and light status indication, and can be connected to production management systems.
Adopting ergonomic design with balanced center of gravity, it is lightweight and comfortable for long-time handheld operation. The non-contact trigger and long-life forward-reverse switch effectively extend the service life of wearing parts; the high-temperature resistant LCD screen ensures stable display in complex working environments.

This product supports bulk orders and OEM/ODM customized services with factory direct prices.We can provide customized configurations such as torque range, drive head type, battery capacity, angle function and appearance according to customer requirements.Adopts high-quality industrial-grade components and precision manufacturing processes, with stable quality and guaranteed delivery.We also provide complete operation training, calibration services and long-term technical support services.