Wrench Torque Testing Machine
The Wrench Torque Testing Machine consists of a loading system, transmission system, digital data acquisition and processing system, and computer-based measurement, control, and display system. It is designed for static torsional mechanical performance testing of various wrenches, including ratchet wrenches, combination wrenches, and open-end wrenches.
Applications
The Wrench Torque Testing Machine is mainly used to evaluate the static torsional mechanical performance and torque strength of various hand tools. It is suitable for:
Wrench Manufacturers: Quality control and performance verification of combination wrenches, open-end wrenches, box-end wrenches, and other hand tools.
Ratchet Wrench Testing: Evaluation of maximum torque, torsional strength, and failure torque of ratchet wrenches.
Hand Tool R&D: Material selection, structural design optimization, and product development.
Quality Inspection: Incoming material inspection, production quality control, and finished-product inspection.
Third-Party Testing Laboratories: Mechanical performance testing and product certification.
Research Institutions: Torsional mechanical property research and comparative testing of different tool materials and designs.
Standards
ISO 1711-1 — Assembly Tools for Screws and Nuts — Mechanical Properties of Hand Tools — Part 1: Wrenches for Industrial Use
ISO 1711-2 — Assembly Tools for Screws and Nuts — Mechanical Properties of Hand Tools — Part 2: Wrenches for Automotive Use
ISO 6789 — Assembly Tools for Screws and Nuts — Hand Torque Tools
QB/T 3002 — Hand Tools — Wrenches
QB/T 4619-2013 — Ratchet Wrenches
GB/T 2611 — General Technical Requirements for Testing Machines
GB/T 10128 — Metallic Materials — Torsion Test Method at Room Temperature
JJG 269 — Verification Regulation for Torsion Testing Machines
Technical Specifications
| Item | Specification |
|---|---|
| Maximum Test Torque | 100 / 200 / 300 / 500 / 1000 / 2000 N·m; 5000 N·m (customizable) |
| Test Stroke | 300 mm / 500 mm |
| Testing Machine Accuracy Class | Class 1.0 / Class 0.5 |
| Torque Measurement Range | 1%–100% of full scale |
| Minimum Torque Resolution | 0.01 N·m / 0.1 N·m |
| Minimum Torsion Angle Resolution | 0.1° |
| Maximum Torsion Angle | 99.999° |
| Test Speed | 0.1–720°/min (customizable) |
| Relative Error of Angle Indication | <±0.5% |
| Repeatability Error of Angle Indication | <0.5% |
| Relative Error of Torque Indication | <±0.5% |
| Repeatability Error of Torque Indication | <0.5% |
| Test Speed Accuracy | Better than ±1% of indicated value |
| Appearance / General Requirements | Complies with GB/T 2611 |
| Power Supply | 220 V, 50 Hz |
Features
Horizontal Structure: Provides a stable test configuration and convenient specimen installation.
Computer-Controlled Operation: Test parameters and procedures can be controlled through the computer, with test results displayed on the screen in real time.
Digital Data Acquisition: Uses a digital data acquisition and control system for accurate torque measurement and data processing.
Full-Digital AC Servo System: Provides precise and stable control of the loading process.
Planetary Cycloidal Pinwheel Reducer: Used for transmission to ensure smooth and reliable loading.
Uniform Loading: Provides stable torque application without sudden impacts or fluctuations.
Accurate Data Acquisition: Enables precise collection and processing of torque and other test data.
The machine is suitable for wrench manufacturers, tool manufacturers, quality inspection laboratories, and research institutions for static torsional performance evaluation and quality control of hand tools.
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