In the highly demanding sectors of electrical engineering, automotive harness manufacturing, and electronics assembly, the physical flexibility and rigidity of wire components are critical metrics. The industrial wire bending stiffness tester, also professionally known as the wire stiffness tester, is specifically designed to evaluate the stiffness and spring-back force of flexible materials.
The wire stiffness tester has a broad scope of application in the cable and wire industry. It is universally applicable for testing the softness, stiffness, flexibility, and hardness of various copper wires, power cords, and metal flat cables. By accurately quantifying these mechanical properties, manufacturers can ensure that their wire products will bend efficiently during complex installations without suffering internal structural damage or exerting excessive spring-back forces on delicate connectors.
| Equipment Model: | WEW-WBT-WIR-01 |
| Equipment Name: | Wire Bending Stiffness Tester |
| Technical Parameters: | Non-standard customization, Tailored to actual materials, Parameters for reference only. |
| Specimen Size: | 12 mm or Customized Requirement |
| Measuring Dimension: | 38 x (1~50) mm (customized based on actual materials) |
| Testing Span: | 1 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm adjustable |
| Span Accuracy: | ±0.1 mm |
| Measuring Range: | 0~1000 g (0~10000 mN) (customized based on actual materials) |
| The Load Cell: | Sensor accuracy ±0.1% |
| Resolution Notification: | 0.01 mN |
| Bending Angle: | Unidirectional test angle 1°~90° infinitely adjustable (customized requirement) |
| Multi-functional : | Measurement: Forward stiffness, Reverse stiffness |
| Angular Velocity: | 0.5~5°/sec Control Adjustable |
| Angular Accuracy: | ±0.1° |
| Measuring Thickness: | 1~12.0 mm (customized based on actual materials) |
| Bending Duration: | 2~30 Seconds |
| Specimen Fixture: | Manual clamping, Automatic reset upon test completion |
| Clamping Mode: | Unrestricted clamping, Capable of non-destructive continuous gripping |
| Operator Interface: | 7-inch Touch Screen or Button Testing |
| Signal Output: | Standard PC Signal Output, Computer Connectivity (optional function) |
| Print Output: | Modular Integrated Thermal Printer |
| Dimensions (LxWxH): | 425 mm x 450 mm x 250 mm |
| Equipment Weight: | 35.0 KGS |
| Power Voltage: | AC220V, AC110V, 50Hz/60Hz, 1 Phase |
| The fundamental working principle of the wire stiffness tester revolves around precision force measurement under strictly controlled bending conditions. Under specified testing conditions, the instrument measures the precise force or torque required to bend one end of a securely clamped test specimen to a 90-degree angle. The resulting measurement is clearly displayed in units of gf.cm or mN, providing a highly granular assessment of the material’s flexural resistance. | Working Principle and Testing Mechanics |
| Not all industrial materials can withstand a full 90-degree deformation. To accommodate materials with diverse physical properties, the system incorporates an intelligent alternative testing protocol. If the test specimen possesses excessively high stiffness, or if bending it to a 90-degree angle would cause the specimen to fracture or break, the operator can adjust the test piece to bend to a much smaller 7.5-degree angle. | Handling Brittle and High-Stiffness Samples |
| When this specialized 7.5-degree test is utilized, the operator must multiply the resulting measured force by 2 to obtain an approximate stiffness value. It is a mandatory laboratory protocol that this specific testing condition and the mathematical approximation must be explicitly noted in the final test report. This ensures total transparency in quality assurance documentation. |
| To eliminate human-induced velocity errors during the bending process, the changes in the testing angle are fully and automatically controlled by a precision motor. This motorized automation not only guarantees uniform stress application on the wire but also drastically improves overall laboratory testing efficiency. Furthermore, the total test duration is fully adjustable according to specific material protocols, with bending times configurable between 2 to 30 seconds. | Motorized Angular Adjustment |
| The wire & component bending stiffness tester from Wewon Environmental Chambers Co., Ltd. offers unparalleled testing versatility. While it supports standard 7.5° and 15° stiffness testing presets, the unidirectional testing angle is infinitely adjustable from 1° up to 90° , ensuring it can meet highly specific custom requirements. The angular accuracy is maintained strictly at ±0.1°, preventing over-bending or under-bending during critical evaluations. | Versatile Angle Selection |
| At the heart of the system is a highly sensitive load cell boasting a sensor accuracy of ±0.1%. This sensor captures microscopic resistance forces with an exceptional resolution of 0.01 mN. The standard measurement range is highly capacious, spanning from 0 to 1000g (equivalent to 0 to 10000 mN), which can also be customized based on actual material demands. The machine is highly capable of multi-functional measurements, reading both forward stiffness and reverse stiffness. | Load Cell and Measurement Accuracy |
| The clamping system is critical when testing cylindrical copper wires or flat metal ribbons. The unit features manual specimen clamping, combined with an automatic reset function once the test is completed. The clamping mode supports unrestricted clamping, allowing for non-destructive continuous gripping, which prevents surface damage to delicate wire insulation or copper cladding. | Clamping Mechanism and Test Spans |
| The system accommodates customized specimen sizes starting at 12mm , with an actual measuring dimension of 38 x (1~50) mm. To support a vast array of wire gauges, the testing span is fully adjustable across multiple intervals: 1mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, and 50mm. Regardless of the span selected, the span accuracy remains a flawless ±0.1 mm. The machine can evaluate materials with thicknesses ranging from 1 to 12.0 mm. | |
| Applying force too quickly can cause a sudden spike in resistance data, while applying it too slowly decreases laboratory throughput. To solve this, the equipment provides precise angular velocity control, which is fully adjustable from 0.5 to 5°/sec. This ensures a true constant rate of deflection suitable for dynamic material analysis. | Machine’s Kinematic Control |
Wire & Cable Industry Standards
- ASTM D1043 / ASTM D747: Standard test methods by the American Society for Testing and Materials for determining the bending rigidity of plastics and flexible materials. Widely utilized to evaluate the flexibility and hardness of sheathed electrical wires, plastic hoses, and nylon filaments.
- IEC 60811-506 / IEC 60811-1-4: International Electrotechnical Commission standards focusing on the low-temperature bending and rigidity testing of non-metallic materials used in electrical and optical fiber cables.
Metal Wire Standards
- ASTM E290: Standard test methods for bend testing of material for ductility and structural rigidity, highly applicable to metallic wires and annealed copper.
The Custom Components Philosophy
Because our fixtures are fully customized to client specifications, we proudly assure our international partners:
“The underlying mechanical platform complies with the constant rate of deflection philosophy, while the structural clamp is meticulously tailored to your specific specimen topography.”
Custom-Tailored Clamping Fixture for Cylindrical Materials
