Product Name: Cutting Head Body / Nozzle Body 

Description:
This component is the cutting head body, also known as the nozzle body, mixing chamber housing, or orifice holder . It is the main structural housing of the waterjet cutting head assembly, responsible for securing and aligning critical consumable components including the jewel orifice (sapphire/diamond nozzle), mixing chamber, and focusing tube (mixing tube) .

The cutting head body features a precision-machined continuous bore that ensures perfect coaxial alignment between the orifice and the mixing tube. This alignment is critical for jet coherence, cutting accuracy, and maximizing the service life of consumable parts . The body is typically manufactured from high-strength stainless steel or hardened alloy to withstand ultra-high pressure operation up to 60,000–90,000 PSI (approximately 4,137–6,200 bar) .

In abrasive waterjet systems, the cutting head body includes a side port for abrasive intake, positioned below the orifice and above the mixing tube . High-pressure water exiting the orifice creates a Venturi effect that draws abrasive particles through this port into the mixing chamber .

Applications:

• Serves as the main housing for the waterjet cutting head assembly

• Positions and aligns the jewel orifice, mixing chamber, and focusing tube coaxially

• Provides the structural interface for mounting the cutting head to the Z-axis or rotary axes (A/C-axis)

• Suitable for both pure water and abrasive waterjet cutting systems operating at 60,000–90,000 PSI

Features:

• Precision-Machined Coaxial Bore: Ensures perfect alignment of the orifice and mixing tube for optimal jet coherence 

• High-Strength Construction: Manufactured from stainless steel or hardened alloy for durability under ultra-high pressure 

• Abrasive Intake Port: Integrated side port for Venturi-effect abrasive suction (abrasive systems) 

• Modular Design: Allows replacement of wear components (orifice, mixing chamber, mixing tube) without replacing the entire body 

• Corrosion-Resistant: Treated to resist water and abrasive dust exposure 

• Long Service Life: The cutting head body itself is a durable component, with expected service life significantly longer than consumable parts (typically 1,000+ operating hours) 

Maintenance:

Inspection:

• Regularly inspect the internal bore and sealing surfaces for signs of erosion, scoring, or wear 

• Check the abrasive intake port for blockages or debris accumulation 

• Inspect all threaded connections and mounting surfaces for damage or corrosion 

Cleaning:

• During consumable replacement, thoroughly clean the internal bore and sealing surfaces with low-pressure water and a soft cloth

• Remove all abrasive debris, mineral deposits, and old seal residue 

• Do not use abrasive tools that could scratch precision-machined surfaces 

Seal Replacement:

• Always replace all O-rings and high-pressure seals when servicing the cutting head body 

• Do not reuse old seals, as this may cause high-pressure water leakage 

Consumable Replacement Integration:

• When replacing the jewel orifice, ensure it is correctly seated in the cutting head body with proper orientation 

• Ensure the mixing tube is fully seated and coaxial with the orifice before tightening 

• Maintain proper orifice-to-mixing tube diameter ratio (typically 1:3) for optimal cutting efficiency 

Full Depressurization:

• Always fully depressurize the waterjet system (high-pressure water and hydraulic circuits) before disassembling or servicing the cutting head body 

• Follow lockout/tagout procedures to prevent accidental high-pressure release

Replacement Criteria:

• Replace the cutting head body if the internal bore is severely eroded, if cracks are detected, if threads are damaged, or if sealing surfaces are compromised 

• Do not attempt to repair a cracked or severely worn cutting head body