Product Name: Focusing Tube (R-500) – Part No. 05097936

Description:
This component is a focusing tube, also known as a mixing tube or abrasive nozzle, specifically designed for high-pressure abrasive waterjet cutting systems . The numbers in the part description indicate an inner diameter of approximately 0.170 inches (4.31 mm) and an overall length of approximately 12.35 inches (313.8 mm).

Manufactured from ultra-hard, wear-resistant tungsten carbide , it is installed in the cutting head assembly downstream of the mixing chamber. Inside this tube, the high-pressure waterjet (typically up to 60,000-94,000 PSI / 4,137-6,480 bar) and abrasive particles are accelerated and focused into a coherent cutting stream. This is a critical consumable part that undergoes constant erosion and requires periodic replacement to maintain cutting quality.

Applications:

• Serves as the final focusing element for the abrasive waterjet in cutting heads

• Defines the kerf width and cutting precision for the waterjet system

• Designed for use in compatible waterjet cutting head assemblies

• Suitable for heavy material removal where a larger kerf is acceptable

Features:

• Tungsten Carbide Construction: Premium-grade tungsten carbide provides exceptional wear resistance and extended service life

• Large Inner Diameter (0.170″ / 4.31 mm): Designed for high-flow abrasive delivery and faster material removal rates

• Optimized Length (12.35″ / 313.8 mm): Engineered for specific cutting head configurations to maximize jet coherence

• Critical Consumable Component: Designed for periodic replacement; lifespan depends on abrasive type, operating pressure, water quality, and proper maintenance practices

Maintenance:

Failure Diagnosis (When to Replace):

• Reduced Cutting Performance: Noticeable decrease in cutting speed, rougher edge finish, or increased taper (wider kerf) indicates bore wear

• Visible Bore Damage: Inspect the exit orifice for ovality, flaring, or visible bore enlargement using a magnifying glass

• Asymmetric Wear: Uneven wear on the tube outlet circumference indicates misalignment between the water orifice and focusing tube, significantly shortening tube life

• Clogged Tube: Complete blockage results from wet or contaminated garnet abrasive

Usage and Replacement Guidelines:

• Rotation Practice (Critical): Rotate the focusing tube by 1/4 turn every 10-12 operating hours to distribute wear evenly around the circumference and significantly extend service life

• Orifice-to-Tube Ratio: For optimal cutting efficiency and extended mixing tube life, maintain the manufacturer's recommended diameter ratio between the water orifice and focusing tube

• Alignment Check: Ensure perfect coaxial alignment between the water orifice and focusing tube. Misalignment causes asymmetric bore wear, poor cut quality, and significantly reduced tube life

• Handling Caution: The focusing tube is extremely hard but brittle; handle carefully to avoid chipping, cracking, or impact damage during installation

• Clean Installation: Thoroughly clean the mixing chamber and nozzle body before installing a new tube to remove debris that could cause misalignment

• Torque Compliance: When reinstalling the retaining nut, tighten to the specific torque value listed in the equipment service manual; over-tightening may crack the tube

• Water Quality Impact: Poor water quality with contaminants accelerates tube wear; maintain proper water filtration to maximize component life

• Abrasive Quality: Use clean, dry garnet abrasive; wet or contaminated abrasive causes clogging and accelerated wear

• Full Depressurization (Critical): Before any maintenance, fully depressurize the waterjet system and follow lockout/tagout procedures

Cross-Reference Information:

• OEM Part Number: 05097936

• Inner Diameter: 0.170″ (4.31 mm)

• Length: 12.35″ (313.8 mm)

• Material: Tungsten Carbide

• Pressure Rating: 60,000-94,000 PSI (4,137-6,480 bar)