ナック Product Lineup

The leak tester applies pressure or vacuum to finished products and components, and electrically detects pressure changes in the event of a leak using a highly sensitive differential pressure sensor. Since leaks are detected electrically, it is easy to quantify and automate leak testing, which was not possible with traditional visual inspection methods. The elimination of the drying process and the removal of individual differences in detection capability are also significant advantages. We provide testing machines that are particularly suitable for airtightness testing of automotive parts, gas/water supply components, mobile phones, digital cameras, and medical devices. We will verify the testing methods that match your testing conditions at the leak test lab. *For examples of leak tester implementations, please visit our website. For more details, please download the catalog or feel free to contact us.

The differential pressure leak tester NLT-720 is a tester that electrically captures pressure changes with a high-precision differential pressure sensor for airtightness (leak) testing of products and parts. Unlike submerged testing, it is a testing device that does not wet the workpiece, allowing for numerical testing without individual variation. It is also easy to integrate into automatic machines. For more details, please contact us or download the catalog.

This is a leak testing device specifically for plastics. It can provide stable inspection results even for materials like plastic and resin, and due to our in-house integrated development and manufacturing system, we can also accommodate customizations based on your requests while keeping both delivery times and costs down.

This is a leak tester manufactured by NAKK that enables the automation and standardization of airtightness testing. It allows for comparative measurement against a master with no leaks, providing numerical inspection results, and can perform measurements without wetting the workpiece, such as in submersion tests. It is widely used in various fields requiring high-precision airtightness testing, including gas-related, water supply, electrical equipment, automotive parts, medical devices, food containers, and pneumatic and hydraulic equipment. ■ Features - High precision leak detection due to comparative measurement with a leak-free master. - Compact design for easy operation. - Up to 10 preset conditions for various settings, allowing for retrieval based on the workpiece. ■ Functions Auto Zero: Zero correction of the value just before measurement. Correction: Adjusts measurement noise based on the workpiece. Judgment Signal Selection: Choose between pulse/hold for OK and NG signals after judgment. Various Check Functions: Self-checks for valves, sensors, test pressure, etc. Hold: Holds the value at the end of measurement. Options: Analog output, communication functions such as RS232C, SD card data collection unit. * We also respond to the design and manufacturing of attached devices. Please feel free to consult us.

We are specialists in industrial measuring instruments, including leak testers, cup collars, and labor-saving and automation devices. === Please contact us if you would like a comprehensive catalog === We manufacture various essential products for industries such as automotive, electronics, gas and water supply, and medical sectors. With a mission to achieve shorter delivery times and lower costs through in-house development, a prompt and accurate follow-up system, and the development of unique technologies only specialists can provide, we deliver products that ensure customer safety and trust. For more details, please contact us or download the catalog.

The NLT-730T2 is a leak tester suitable for products without an air supply port, such as sealed products. It detects leaks with high precision by comparing measurements with a leak-free master. The operation is via a color touch panel with a width of 134 mm and a height of 92 mm, featuring a wide screen. Measurements are taken twice: the first time with reduced sensitivity to detect large leaks, followed by a second measurement for detecting small leaks. 【Features】 - Automation and standardization of airtight testing are possible. - High precision leak detection through comparison with a leak-free master. - Particularly suitable for products without an air supply port, such as sealed products. - Especially designed for products with minimal spatial volume. - Operation is via a color touch panel with a width of 134 mm and a height of 92 mm, featuring a wide screen. *For more details, please refer to the PDF document or feel free to contact us.

It was very difficult to set the workpiece using a robot in a leak test where a clamping mechanism is essential to seal the workpiece. However, by using a six-axis robot, we were able to gain a certain degree of freedom in movement, which allowed us to resolve the issue. Additionally, for the loading and unloading, we use air cylinders to keep the slide end in its original position, which results in a design that minimizes displacement in the Y (X) axis. We are moving away from conventional semi-automatic machines (manual workpiece setting) and achieving online automation.

In the automotive industry, performance evaluation of components is essential to ensure product safety and reliability. Particularly for critical parts such as engines, transmissions, and brakes, accurate measurements of leaks, pressure, and flow are crucial for maintaining product performance. Inadequate measurements can lead to component failures or performance degradation. Our comprehensive catalog of measuring instruments covers industrial measuring devices, including leak testers, and supports the performance evaluation of automotive parts. 【Usage Scenarios】 - Leak testing of engine components - Waterproof testing of electronic components 【Benefits of Implementation】 - Improvement in product quality - Reduction of defective products - Increased customer satisfaction

In the automotive industry, airtight testing of components is essential to ensure product quality and safety. Particularly for parts where leaks are unacceptable, such as engine components and fuel tanks, high-precision testing is required. The traditional method of submersion testing not only takes time and effort but also carries the risk of corrosion due to wetting the workpiece. Our differential pressure leak tester NLT-330 adopts a comparative measurement method with a leak-free master, allowing for the output of numerical test results. It achieves high-precision airtight testing without wetting the workpiece, unlike submersion testing. 【Application Scenarios】 - Airtight testing of engine components - Airtight testing of waterproof parts - Airtight testing of air conditioning components - Airtight testing of brake components 【Benefits of Implementation】 - Reduced inspection time - Improved inspection accuracy - Reduced risk of workpiece corrosion - Standardization of inspection processes - Cost reduction

In the medical device industry, ensuring airtightness is crucial for guaranteeing the safety and reliability of products. Particularly in medical devices that contain liquids or gases, leaks can lead to product malfunction or pose risks to patients. The NLT-330 enables high-precision leak testing without the need for submersion testing, supporting quality control in medical devices. 【Usage Scenarios】 - Airtight testing of medical tubes, catheters, etc. - Leak testing of drug containers, infusion bags, etc. - Airtight testing of respirators, anesthesia machines, etc. 【Benefits of Implementation】 - Maintenance of product quality through non-destructive testing - Reduction of inspection time and increased efficiency - Cost reduction through the reduction of defective products

In the electronic components industry, airtightness testing is essential to ensure quality. Particularly as electronic devices become smaller and more densely packed, the risk of even slight leaks in components leading to decreased product performance or failure is increasing. Since immersion testing can wet the workpiece, it is necessary to consider the impact on electronic components. The NLT-330 achieves high-precision airtightness testing without submerging the components. 【Application Scenarios】 - Component inspection at electronic component manufacturers - Quality control at various electronic device manufacturers - Inspection after circuit board assembly 【Benefits of Implementation】 - Inspection can be conducted without wetting the workpiece - Quality improvement through high-precision leak detection - Streamlining of the inspection process - Cost reduction through early detection of defective products

In the pharmaceutical industry, the integrity of containers is crucial for maintaining the quality of pharmaceuticals. Even a slight leak in a container can lead to product degradation or contamination, potentially compromising the efficacy and safety of the medication. While submerged testing is an effective method, it carries the risk of wetting the workpiece. The NLT-330 achieves high-precision leak testing without wetting the workpiece as an alternative to submerged testing. 【Application Scenarios】 - Leak testing of pharmaceutical containers (vials, ampoules, bottles, etc.) - Quality inspection of containers after filling - Sampling inspections on the production line 【Benefits of Implementation】 - Maintaining product quality through non-destructive testing - Streamlining inspection processes and reducing costs - Enhancing product reliability and improving brand image

In the chemical industry, container inspection is crucial for maintaining product quality, and the airtightness of containers is extremely important. In particular, high-precision inspections are required to prevent leakage of contents and contamination from foreign substances. Traditional inspection methods necessitate submerging the container, which not only takes time and effort but can also affect quality by wetting the container. Our differential pressure leak tester, NLT-330, achieves high-precision airtightness testing without the need for submersion testing. By adopting a comparative measurement method with a leak-free master, it outputs numerical inspection results, enabling objective quality assessment. 【Application Scenarios】 - Inspection of containers for chemicals, solvents, and reagents - Airtightness testing of food containers and pharmaceutical containers - Quality control in various container manufacturing companies 【Benefits of Implementation】 - Maintenance of product quality through non-destructive testing - Reduction and efficiency improvement in inspection time - Cost reduction in inspections - Standardization of quality management through numerical data