Product Name: KMT Style Focusing Tube / KMT Style Mixing Tube (Part No. 100102-30-3)

Description:
This component is a focusing tube (also known as a mixing tube or abrasive nozzle) specifically designed for KMT style waterjet cutting heads. It is a precision-engineered cylindrical consumable component manufactured from ultra-hard wear-resistant tungsten carbide. Installed in the lower section of the cutting head assembly, the focusing tube serves as the final exit point where the high-pressure waterjet and abrasive particles are focused into a coherent, high-velocity cutting stream. The 100102-30-3 model features a 30 mm exposure length and follows KMT style specifications for proper fit and alignment with KMT series cutting head assemblies .

Applications:

• Generates the final abrasive waterjet stream for cutting hard materials such as metal, stone, glass, ceramics, and composites

• Installed in KMT style waterjet cutting head assemblies, positioned downstream of the mixing chamber and orifice

• Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI and above

• The 30 mm exposure length positions the cutting nozzle closer to the workpiece for enhanced cutting precision

Features:

• KMT Style Compatibility: Specifically designed for KMT series waterjet cutting heads, ensuring proper fit and alignment

• 30 mm Exposure Length: Positions the nozzle closer to the workpiece, improving cut precision and reducing edge taper

• Tungsten Carbide Construction: Manufactured from premium wear-resistant material for extended operational life under abrasive conditions

• Precision Internal Bore: High concentricity and smooth internal surface finish maintain jet coherence and cutting accuracy

• Critical Consumable Component: Designed as a wear part requiring periodic replacement based on operating hours and cut quality

Maintenance:

Expected Service Life:

• Service life typically ranges from 100 to 300 operating hours, depending on water quality, abrasive type, operating pressure, and proper alignment

Failure Diagnosis:

• Reduced Cutting Performance: Slower cutting speeds or rougher edge finish indicates bore wear

• Increased Kerf Width: Visible widening of the cut slot suggests internal bore enlargement

• Jet Divergence: A scattered or non-coherent waterjet stream indicates bore wear or misalignment

• Visual Inspection: Check the exit orifice for ovality, flaring, or visible wear patterns

Installation and Maintenance:

• Ensure Cleanliness: Before installation, confirm the mixing chamber and retaining nut surfaces are free from debris or residual abrasive

• Test Alignment: After installation, run low-pressure water to verify the waterjet exits as a straight, coherent stream

• Rotation Practice: Rotate the focusing tube periodically (e.g., every 10–20 hours) to promote even wear distribution and extend service life

• Full Depressurization: Always fully depressurize the waterjet system and follow lockout/tagout procedures before replacement

• Proper Seating: Ensure the focusing tube is fully seated against the mixing chamber to prevent water bypass

Replacement Criteria:

• Replace immediately when cut quality degrades, the waterjet stream becomes divergent, or visible bore wear is detected

Optimal Diameter Ratio:

• For maximum focusing tube life and cutting efficiency, maintain an orifice-to-focusing tube diameter ratio of approximately 1:3

Water and Abrasive Quality Impact:

• Poor water quality (contaminants, high hardness, inadequate filtration) accelerates focusing tube wear

• Maintaining proper water filtration and using high-quality garnet abrasive maximizes focusing tube service life