Flexible Shaft Torque Testing Machine

Servo torsion test bench for flexible drive shafts, used for torsional stiffness, static breaking torque and cyclic torsional fatigue performance evaluation

Product Overview

This flexible shaft torque testing machine adopts high-precision servo torsion driving system, specially developed for flexible drive shafts widely used in mechanical control, garden machinery, automotive accessories and cleaning equipment. It supports static torsion destructive test, torsional stiffness test and repeated torsional fatigue test. The equipment measures transmission torque, torsion angle, torsional hysteresis and torque-angle curve, and assesses torque transmission stability, fracture torque and fatigue failure cycle of flexible shafts. Self-aligning adjustable clamping fixtures adapt to different lengths and outer diameters of flexible shafts, reducing extra bending stress during loading. The supporting software collects torque and angle data in real time, stores test curves and exports standardized test reports. It is suitable for new product development, batch quality inspection and reliability verification of flexible transmission shafts.

Applicable International Standards

The system is designed to comply with the following recognized testing standards:

• ISO 18338:2021 — Metallic materials — Torsion test at room temperature
• ISO 1352:2021 — Metallic materials — Torque-controlled fatigue testing
• ISO 7800:2012 — Metallic materials — Wire — Simple torsion test

Note: Specific compliance depends on model configuration, torque sensor selection and customized fixture design. Customized fixtures and test schemes for extra testing standards are available upon request.

Key Features

• High precision servo torsion drive — Gentle and steady rotation loading, suitable for flexible shaft with low rigid transmission structure.
• Optional torque range — 0.1 ~ 500 N·m, multiple sensor options, and can be configured according to customer test requirements, replaceable sensors for different flexible shaft specifications.
• Multi-test mode integration — Static breaking torsion, torsional stiffness, cyclic torsional fatigue and constant angle holding test.
• Self-aligning flexible shaft fixtures — Adjustable span, fit different outer diameter and end connector types of flexible drive shafts.
• Rich calculated indicators — Transmission torque, ultimate fracture torque, torsional stiffness, hysteresis angle and fatigue cycle count.
• Real-time curve display — Torque-angle curve, torque-time curve displayed synchronously during testing.
• Professional test software — Curve overlay comparison, batch data storage and formatted test report export.
• Complete safety protection — Over-torque, over-angle, overload and emergency stop protection functions.

Technical Specifications

Specifications vary by model configuration, torque sensor selection and customized fixture. Mini torque version and long-span clamping jigs can be customized for small flexible shaft batch inspection.

Typical Applications

• Garden machinery industry — Torsion performance test for grass trimmer flexible transmission shafts.
• Automotive accessory sector — Reliability test for control flexible shafts and actuator flexible shafts.
• Cleaning equipment manufacturing — Torque transmission inspection for sewer cleaning flexible shafts.
• Mechanical transmission R&D laboratory — Study on torsional hysteresis and fatigue life of flexible transmission components.
• Third-party testing institutions — Standard torsion test and certification service for flexible drive shafts.