The Micro TIG Torch is a compact welding tool for precision work in confined spaces. Recognized as one of the smallest and most versatile Tungsten Inert Gas (TIG) torches available, it features a low-profile design and switches between multiple angular heads for different applications. Standard packages include three interchangeable heads (45°, 90°, and 180° configurations), collets in .040″, 1/16″, and 3/32″ diameters, clear glass nozzles, an alumina cup, tungsten electrodes in multiple diameters, and a tungsten stick-out gauge.
The torch’s low-profile nozzle fits into holes as small as 5/8-inch diameter, while its ergonomic design provides comfortable grip and maneuverability in all positions. Dual o-ring head construction ensures low maintenance, and certain models feature around-the-head water cooling to minimize overheating and extend torch life. Physical dimensions include a neck diameter of approximately 0.31 inches and standard neck length of 3.5 inches, with flexible neck models and custom lengths from 2 to 36 inches available.
The torch is available in several model variants differentiated by cooling systems and amperage ratings. Common models include a 70-amp air-cooled version and a 140-amp water-cooled version, both rated for 100% duty cycle and sharing the same interchangeable head system and consumables.
RAX Industrial: Expert Micro TIG Torch Manufacturer
Founded in 1999, we’ve brought more innovations to TIG Welding equipment than any other manufacturer. With over 20 years of specialized experience and a commitment to precision and reliability, RAX Industrial sets the standard in micro TIG welding.
As an integrated R&D and manufacturing hub with a dedicated team of 50+ specialists, we leverage advanced automation in our 18,000 m² facility to produce torches that meet the highest standards. Every RAX Industrial Micro TIG Torch is engineered for tight-space applications, offering unmatched performance for precision welding tasks. Our products are backed by ISO 9001 certification and comprehensive global support, ensuring you receive not just a torch, but a reliable partner in your welding operations.
Connect with RAX Industrial today and discover how our micro TIG torches can elevate your welding precision and efficiency.
| Parameter Category | Specification | Details / Value |
|---|---|---|
| General Specifications | Model Variants & Amperage | MR70: Air-Cooled, 70 A MR140: Water-Cooled, 140 A |
| Duty Cycle | 100% for all models (AC/DC) | |
| Primary Application | Precision welding in confined spaces and tight locations. | |
| Key Feature | Low-profile nozzle fits into holes as small as 5/8-inch diameter. | |
| Cooling Technology (Water-Cooled Model) | Around-the-head water cooling to minimize overheating. | |
| Head System | Interchangeable angular heads (45°, 90°, 180°). | |
| Head Design | Dual o-ring design for low maintenance. | |
| Physical Dimensions | Neck Diameter | 0.31 in (7.9 mm) |
| Standard Neck Length | 3.5 in | |
| Flexible Neck Length (Optional) | Available in various lengths. | |
| Custom Neck Length Range | From 2 in to 36 in. | |
| Cup Diameter | 0.36 in (9.1 mm) | |
| Cup Length | 0.60 in (15.2 mm) | |
| Standard Package Contents | Included Heads | 45°, 90°, and 180° configurations. |
| Included Collets | .040″ (1.0mm), 1/16″ (1.6mm), 3/32″ (2.4mm). | |
| Included Cups / Nozzles | 2x Clear glass (Pyrex) nozzles, 1x Alumina cup. | |
| Included Tungsten | 3 pieces (matching collet diameters). | |
| Included Tools & Gauges | Tungsten stick-out gauge and wrench. | |
| Complete Kit Designation | AK-MR accessory kit. | |
| Options & Accessories | Cable Types | Standard: Vinyl/PVC tubing. Optional: Super-flex, soft over-braided rubber tubing. Deluxe: Braided rubber tubing with leather protective cover. |
| Standard Cable Lengths | 12.5 ft (3.8 m) and 25 ft (7.6 m). | |
| Replacement Parts | Individual heads, collets, cups (clear & alumina), handle bushings, neck insulators. | |
| Tungsten Electrodes (Optional) | 2% Ceriated, diameters: .040″, 1/16″, 3/32″. Pre-ground to 20-degree angle. |
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Frequently Asked Questions
What is a Micro TIG Torch and what makes it unique?
The RAX Industrial Micro TIG Torch is the smallest, most versatile TIG torch on the market, designed specifically to access extremely tight, confined spaces where standard torches cannot reach. Its dime-sized head and low-profile design make it an invaluable problem-solver for welding in limited-access joints and complex assemblies.
What design features improve access and flexibility in tight spaces?
The torch is engineered with several key features for superior access:
- Low-Profile Nozzle: Fits into holes as small as 5/8 inch in diameter.
- Three Interchangeable Angular Heads: Available in 45°, 90°, and 180° configurations to navigate around obstacles and provide multiple options for narrow applications where precision is needed.
- Compact Bodies: Multiple models offer different lengths (e.g., medium and long) to suit various depth requirements.
What models are available, and how do they differ in cooling and amperage capacity?
Two primary models are available. The MR70 is air-cooled, rated for 70 amps at 100% duty cycle, and provides a simpler setup for lighter-duty tasks. The MR140 is water-cooled, rated for 140 amps at 100% duty cycle, allowing for sustained high-performance welding in a compact form factor. Water cooling minimizes overheating and extends torch life, making it ideal for higher-amperage applications. Both models are available with Super-Flex cables in 12.5 ft. (3.8m) and 25 ft. (7.6m) lengths.
What are the ideal applications for this torch?
The torch is ideally suited for specialized repair and fabrication work where space is extremely limited and precision is critical. Common applications include radiator repair, boiler making, jewelry, art, aerospace, precision fabrication, and any task that requires precision welding in pipes, tubes, or components with small access holes where there is barely enough room to sneak a rod in.
What accessories are included with the torch package?
The standard torch package comes complete with an AK-MR accessory kit that includes everything you need to start welding. This includes three interchangeable heads (45°, 90°, and 180°), collets in .040 (1.0mm), 1/16 (1.6mm), and 3/32 (2.4mm) sizes, 2 Clear Pyrex cups, 1 Alumina cup, 3 pieces of tungsten (in three different diameters), and a tungsten stick-out gauge for easy installation.
How does the design contribute to long-term value and lower operating costs?
The design focuses on serviceability and part replacement to minimize downtime and maintenance expenses. Key components, such as insulators and head parts, are often made from replaceable materials like silicone rubber. This modularity means you can replace only the worn part instead of the entire assembly, reducing long-term operational costs and maximizing equipment uptime.
Are the torches compatible with major welder brands, and what support is provided?
The torches and consumables are precision-engineered for universal compatibility with major welder brands such as Binzel, Miller, and ESAB. This ensures consistent weld quality and simplifies consumable management. We back our products with a 12-month warranty and provide 24/7 technical support to maintain high uptime in demanding fabrication and MRO settings.
Can you customize micro torches for integration into our welding machine systems?
Yes. We specialize in comprehensive OEM and ODM customization for machine manufacturers. Our engineering team provides free industrial design and prototyping based on your specific application requirements. We can customize torch aesthetics, modify components for seamless compatibility, and ensure all products meet necessary ISO, CE, and other compliance standards. As a member of the China Welding Association and a contributor to national standards, we offer deep technical collaboration and long-term supply stability to enhance your product's competitiveness.
What lead time can distributors expect for bulk orders of micro torches and consumables?
We maintain an agile supply chain to support our distributor network. Our standard lead time for bulk orders is 15 days. We offer competitive tiered pricing and support private labeling (custom branding) on products. To aid your sales, we provide marketing support including high-quality product photography, media assets, and samples. Our extensive catalog, including precision consumables like contact tips and nozzles, is designed for rapid inventory turnover.