Product Name: Nozzle Tube / Focusing Tube (Mixing Tube) – Part No. 05136031

Description:
This component is a high-pressure nozzle tube, also known as a focusing tube or mixing tube, specifically designed for abrasive waterjet cutting systems . It is a precision-machined cylindrical consumable component manufactured from ultra-hard, wear-resistant tungsten carbide material . The tube is installed in the cutting head assembly immediately downstream of the mixing chamber and water orifice, where the high-pressure waterjet and abrasive particles are accelerated and focused into a coherent cutting stream .

Dimensional Specifications:

• Nominal Length: 11.00 inches (279.40 mm)

• Actual Length: 10.65 inches (270.51 mm)

• Inner Diameter (ID): Refer to manufacturer specifications based on the orifice size and cutting application

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

Applications:

• Serves as the final focusing element for the abrasive waterjet, directing the cutting stream onto the workpiece

• Defines the kerf width, cutting precision, and edge quality for the waterjet system

• Installed in the cutting head assembly of compatible waterjet systems

• Used during scheduled preventive maintenance, performance restoration, or when cutting quality visibly degrades

Features:

• Tungsten Carbide Construction: Provides exceptional wear resistance and extended service life under extreme abrasive flow conditions

• Precision Inner Diameter: Manufactured to exacting tolerances to ensure a coherent, straight jet for clean, narrow kerf cuts

• Optimized Length: The specific length is engineered for specific cutting head configurations to maximize jet coherence

• High-Pressure Rating: Engineered for continuous operation at 60,000-94,000 PSI

• Critical Consumable Component: As a high-wear part, requires periodic replacement; lifespan depends on abrasive type, flow rate, operating pressure, and water quality

Maintenance:

Failure Diagnosis (When to Replace):

• Reduced Cutting Performance: Noticeable decrease in cutting speed, rougher edge finish, or increased kerf width 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

• Jet Divergence: If the abrasive/water stream appears scattered or divergent, the focusing tube may be worn

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

• Scheduled Preventive Replacement: Replace based on manufacturer hourly recommendations or when cut quality degrades

Inspection 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 performance and extended mixing tube life, maintain the manufacturer's recommended diameter ratio between the water orifice and focusing tube (typically 1:3)

• 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

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

• Clean Installation: Perform the rebuild in a designated clean area. 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

• Storage: Store spare focusing tubes in a clean, dry, protective environment to prevent pre-service damage to the delicate inner bore

Cross-Reference Information:

• OEM Part Number: 05136031

• Table Reference: Table 12-44 Nozzle Tubes

• Nominal Length: 11.00″ (279.40 mm) / Actual Length: 10.65″ (270.51 mm)

• Pressure Rating: 60,000-94,000 PSI

• Material: Tungsten Carbide

• Compatible with: KMT, AccuStream, Flow, OMAX, BFT, WSI, and other standard waterjet systems