Coning and Threading Tool for HP Tubing

The Role of Threading and Coning Tool in Waterjet Cutting Systems

In the field of high-pressure fluid systems, especially in waterjet cutting machines, precision and safety are always the top priorities. One of the most critical tools that ensures reliable high-pressure tube connections is the threading and coning tool. This specialized tool is designed to prepare high-pressure tubing ends by creating a precise cone and matching thread, which allows the tube to connect seamlessly with cone and thread fittings. Without the threading and coning tool, the reliability and safety of a waterjet cutting machine would be severely compromised.

Application in Waterjet Cutting Machines

A threading and coning tool plays a vital role in the maintenance, installation, and repair of waterjet cutting machines. These machines operate at pressures often exceeding 40,000psi, 60,000 psi, 90,000psi, requiring tubing and fittings that can withstand extreme conditions. The tool ensures that stainless steel or high-strength tubing is perfectly coned and threaded, allowing the tubing to fit securely into high-pressure connectors. In practice, a threading and coning tool is used whenever new tubing needs to be installed, when the cutting head is relocated, or when the original tubing becomes worn and must be replaced. By using the threading and coning tool, technicians guarantee that the waterjet system remains leak-free and safe under continuous high-pressure operation.

Applicable Tube Specifications

The threading and coning tool is typically designed for high-pressure tubes with sizes ranging from 1/4 inch to 9/16 inch (6 mm to 14 mm) outer diameter. These specifications are standard in waterjet cutting systems and many hydraulic or laboratory high-pressure applications. For waterjet machines, the most common tube sizes are 1/4 ich, 3/8 inch and 9/16 inch, which carry ultra-high-pressure water directly to the cutting head. A well-designed threading and coning tool can handle both imperial and metric tube sizes, ensuring compatibility with a wide range of international equipment.

Functions and Advantages

The primary function of the threading and coning tool is to prepare tube ends accurately so they can be connected using cone and thread fittings. Its key functions include:

1. Coning – cutting the tubing end into a precise 59° cone, ensuring a tight metal-to-metal seal.

2. Threading – forming strong threads on the outer surface of the tubing end, enabling a secure mechanical connection.

3. Alignment – keeping the tubing straight and centered during preparation, reducing installation errors.

The advantages of using a high-quality threading and coning tool are significant:

• Guarantees leak-free joints under ultra-high pressure.

• Extends tubing life by reducing stress at the connection point.

• Provides repeatable accuracy, even for inexperienced operators.

• Saves maintenance time and reduces costly downtime for waterjet machines.

Usage Precautions

While the threading and coning tool is straightforward, some precautions should be followed:

• Always secure the tubing firmly to avoid slippage during coning or threading.

• Lubricate the threading dies regularly to prevent wear.

• Ensure that the tube ends are cut square before starting the coning process.

• Avoid over-tightening the cone, which may weaken the tubing.

• After using the threading and coning tool, inspect the threads and cone surface carefully to ensure there are no cracks or irregularities.

Parts That Require Replacement

Like any precision tool, the threading and coning tool has consumable parts that need periodic replacement. These include:

• Threading dies – which wear down over time and must be replaced for clean, accurate threads.

• Coning blades – which dull after repeated use and require sharpening or replacement.

• Guide bushings – which ensure alignment and may wear with heavy use.

Regular maintenance and timely replacement of these components keep the threading and coning tool performing at its best, ensuring that waterjet cutting machines remain safe and efficient.

Conclusion

The threading and coning tool is an indispensable accessory for anyone working with waterjet cutting machines or high-pressure tubing systems. It ensures that connections are reliable, leak-free, and capable of withstanding extreme pressures. By selecting a high-quality threading and coning tool, technicians not only improve the safety and performance of their systems but also extend the service life of their tubing and fittings. With proper use, maintenance, and replacement of consumable parts, the threading and coning tool remains a long-term investment for efficiency and reliability in high-pressure applications.

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How to use the tool kit, you can click the below link into my youTube channel.

https://www.youtube.com/watch?v=Urv-e3_BQ98