High-Capacity Push–Pull Force Testing for Wire Harness and Cable Assemblies
Reliable cable assemblies and wire harnesses must withstand mechanical stress during installation, operation, and long-term use. To verify the structural strength of connectors, terminals, and cable assemblies, our quality control laboratory is equipped with a JTM-UT2303 high-capacity push–pull force testing machine. This equipment enables accurate measurement of tensile and compressive forces up to 200 kg, allowing us to evaluate the mechanical durability of larger cable assemblies and high-strength connector systems used in industrial and electronic applications.
Equipment Overview
The JTM-UT2303 push–pull tester, manufactured by Taiwan Nakazawa Co., Ltd., is a precision testing system designed to measure mechanical forces applied to cable assemblies, connectors, and related components. The system uses a motorized vertical testing column combined with a digital force measurement system, providing controlled movement and precise force readings during testing. This configuration allows our engineers to perform repeatable and consistent mechanical testing under controlled conditions.
Key Specifications
| Item | Specification |
|---|---|
| Equipment Model | JTM-UT2303 |
| Manufacturer | Taiwan Nakazawa Co., Ltd. |
| Maximum Test Force | 200 kg (≈1960 N) |
| Measurement Type | Push & Pull |
| Test Direction | Vertical |
| Force Display | Digital control panel |
| Test Control | Motorized testing system |
| Movement Control | Adjustable test speed |
| Test Fixture | Adjustable clamping fixture |
The high-capacity load capability makes this equipment suitable for testing larger connectors, cable assemblies, and high-strength crimp connections.
The JTM-UT2303 system allows us to perform a wide range of mechanical strength verification tests, including:
• High-force terminal pull-off testing
• Connector retention force verification
• Cable tensile strength testing
• Mechanical durability testing of cable assemblies
• Housing or connector locking force evaluation
The motorized testing mechanism ensures consistent pulling speed, while the digital measurement system records the force required to cause mechanical separation or failure. Certain wire harness applications require significantly higher mechanical strength than standard signal cables. Examples include industrial automation systems, power distribution harnesses, robotics and machinery wiring, and heavy-duty connectors and cable assemblies.
High-capacity force testing ensures that these components can withstand installation forces, vibration, and operational stress without failure. By verifying mechanical strength through controlled testing, we can confirm that cable assemblies meet performance expectations in demanding environments.
Mechanical strength testing helps verify compliance with widely recognized standards used in the cable and wire harness industry, including:
• IPC/WHMA-A-620 – Cable and Wire Harness Assembly Requirements
• UL cable assembly guidelines
• Customer-specific mechanical performance requirements
Testing ensures that connectors, terminals, and cable assemblies meet the required retention force and durability specifications.
As part of our quality assurance process, the JTM-UT2303 push–pull testing system allows us to verify the structural integrity of cable assemblies under controlled laboratory conditions. Combined with other inspection and testing equipment in our laboratory, this capability helps ensure that every wire harness we manufacture meets strict standards for mechanical durability, electrical reliability, and long-term performance.
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