
MS-1305D is a fully automatic insertion and extraction force plug testing machine from Mikrosize, designed for precision engineering and connector performance evaluation. Combining automatic centering, a servo-driven ball-screw mechanism, and an integrated micro-ohm/dynamic impedance testing system, it delivers reliable and accurate results for manufacturing and quality control in the electronics and machinery industries.
1. Functional Purpose
This fully automatic insertion and extraction force plug testing machine is specifically engineered to run precise insertion and extraction force tests on a wide range of connectors and similar components. Its key differentiator is an automatic centering mechanism that minimizes misalignment, ensuring highly accurate and repeatable results.
Working principle: the connector under test is mounted on the machine, and a plugging speed and the number of test cycles are set. A defined force is then applied to insert and extract the connector repeatedly until the predetermined test cycles are reached or the connector fails. The machine records the insertion and extraction forces and displacements throughout the process for evaluation and analysis. It runs on the English version of Windows-based software; test data – including test specifications, movement curves, life curves, and inspection reports – can be stored for full traceability.
The machine also addresses a common pain point in connector testing: the challenge of fixturing different connector types. Male and female connectors align automatically during testing, avoiding the off-center insertion that often affects conventional testers. This improves both accuracy and throughput, making it a preferred choice for mass production lines and laboratory testing alike.
2. Technical Parameters
Key technical specifications of the MS-1305D are listed below:
- Maximum Loading: Optional 5kg, 10kg, 20kg, 50kg, 100kg load cells – selectable to suit different force ranges.
- Load Cell Accuracy: 0.02% – high measurement precision across the selected range.
- Test Height: 150mm – accommodates a wide variety of connector sizes and stroke requirements.
- Driving Motor: Servo motor (Panasonic, made in Japan) – stable and precise motion control.
- Test Speed: 0–300mm/min – adjustable to simulate different real-world usage scenarios.
- X/Y-axis Movement Range: 0–75mm – precise positioning of test specimens.
- Transmission Structure: Ball screw – smooth, stable movement for consistent results.
- Machine Dimension: 400 × 300 × 1050mm (W × D × H) – compact footprint for laboratories and production floors.
- Minimum Adjusting Movement: 0.01mm – fine adjustment of the test setup.
- Net Weight: 65kg – stable base that minimizes vibration during operation.
- Power Source: AC 220V – compatible with standard industrial and laboratory power.

3. Introduction to Testing Machine Software
The software of the MS-1305D is designed to enhance functionality, data management, and user experience, making the machine a comprehensive testing solution. It runs on the English version of Windows, and its interface and features can be customized according to customer requirements.
3.1 Main Testing Items
The software supports a wide range of testing items tailored to connector performance evaluation:
- Analysis of connector plug-in life (durability) curves – assessing long-term performance.
- Connector row insertion/extraction tests and single-pin holding force tests – covering key performance indicators of connector assemblies.
- Insertion/extraction force and displacement tests for connector products – the core functions, ensuring accurate force–displacement measurement.
- Single-hole plug/plug-out tests, connector normal force tests, and connector pin withdrawal (recede) tests – addressing different connector structures.
- General compression, tensile, and breaking strength tests – extending the machine’s application beyond connectors.
- Terminal resistance load tests, and terminal or connector impedance tests – validating electrical performance alongside mechanical testing.

3.2 Main Functional Features
The software is packed with practical, user-centric features:
- Prints and stores graphics, including plug-in displacement curves, life curves, and inspection reports – for easy documentation and sharing of results.
- Load display units (N, LB, GF, KGF) can be switched freely on the interface, and the curve sampling comparison function is available for detailed analysis.
- Test specifications can be set and stored by the computer via drop-down menus or direct data entry, including test category, movement direction, load range, movement range, origin position, origin detection, test speed, total test cycles, pause time, waiting position, and zero-pressure times.
- Automatic loading zero-point detection with a settable origin-detection load value, and a bidirectional hold function that holds the set time on the up/down cycle.
- The title and LOGO of the graph report and text report can be designated by the customer; the report title can be modified at any time and converted to the Excel editor, supporting both Chinese and English.
- Inspection reports can be transferred to and edited in Word, Excel, and PDF – enabling seamless integration with existing quality management systems.
- An integrated micro-ohm (dynamic impedance) test system measures connector contact resistance and dynamic impedance during insertion/extraction tests, and draws a load–route impedance curve – no separate micro-ohm tester is required.
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4. Instrument Protection Device
To protect operators and equipment and maintain test accuracy, the MS-1305D is equipped with comprehensive protection devices:
- Load Cell Overload Protection: if the applied force exceeds the rated load capacity of the selected load cell, the system automatically stops the test, protecting the sensors and mechanical components.
- Automatic Stop and Travel Limits: the machine automatically stops when test data exceeds the set value in the life test, and travel limits prevent moving parts from exceeding safe ranges, avoiding collisions and potential damage.
- Software Parameter Limit Protection: the software caps key test parameters (such as speed and stroke); values that exceed safe limits are rejected with a warning, keeping the machine within its safe operating range.
5. Standard Delivery
Each MS-1305D is supplied with the following standard accessories:
Main unit (1pc), computer (1pc), 19-inch computer monitor (1pc), USB mouse and keyboard (1pc each), resistance test connecting wire and clamp nozzle (1pc), test software (1pc), load cell (TECSIS, made in Germany) (1pc), multifunctional fixtures (3pcs), X-Y movement stage (1pc), full-row connector fixtures (2pcs), single-hole centering clamp (1pc), single-hole fixture (1pc), single-pin holding force fixture (1pc), impedance testing system (1pc), data lines (3pcs), and power lines (3pcs).
Conclusion
In conclusion, the MS-1305D fully automatic insertion and extraction force plug testing machine from Mikrosize combines precision, functionality, and ease of use. Whether for laboratory research, product development, or mass production quality control, it provides reliable and accurate testing solutions for connector manufacturers and related industries – from electronic components and automotive to aerospace and household appliances.
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