Product ID: 05144183 – Proximity Switch Spacer (Intensifier Pump Component)

Description:
This component is a proximity switch spacer, also known as a proximity sensor mounting spacer or intensifier standoff spacer, designed for high-pressure waterjet intensifier pumps . It is a small, precision-machined cylindrical spacer used to correctly position the proximity switch (Product ID 05127584) relative to the hydraulic piston within the intensifier assembly .

This spacer establishes the proper air gap between the sensor face and the piston target, ensuring accurate detection of the piston's end-of-stroke position. Without this spacer, the proximity switch may not sense the piston correctly, leading to missed signals, erratic pump cycling, or complete pump failure to reverse direction . This component is used in SL-IV, SL-V, SL-VI, Classic series, and OEM intensifier assemblies with horsepower ratings ranging from 15 to 100 HP .

Applications:

• Used in waterjet intensifier pumps to mount and position the proximity switch (05127584) at the correct distance from the hydraulic piston 

• Installed between the proximity switch and the cylinder head or intensifier frame 

• Ensures proper air gap for reliable non-contact sensing of the piston's end-of-stroke position

• Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI (approximately 4,137 bar) 

• Compatible with SL-IV (50 HP), SL-V, SL-VI (75–100 HP), and Classic series intensifier assemblies 

Features:

• Precision Machining: CNC-machined to exact dimensional tolerances for consistent proximity switch positioning 

• Stainless Steel Construction: Manufactured from stainless steel providing excellent corrosion resistance and durability in waterjet environments 

• Lightweight Design: Approximately 0.001 kg (0.002 lbs) for easy handling during maintenance 

• Critical Positioning Component: Establishes correct air gap for reliable proximity switch sensing 

• OEM Compatibility: Direct replacement part for KMT waterjet systems 

• Two Required Per Assembly: Quantity of 2 used per complete intensifier assembly 

Maintenance:

• Critical Positioning Component: The spacer is essential for correct proximity switch operation. If missing or damaged, the sensor may not detect the piston correctly 

• Inspection: During proximity switch replacement, inspect the spacer for signs of wear, deformation, cracking, or corrosion. Ensure it is clean and free from debris

• O-Ring Spacer: Note that an O-ring spacer (Product ID 05144191) is used in conjunction with this component . Verify both components are present during assembly

• Proper Orientation: Ensure the spacer is correctly positioned between the switch and the mounting surface during reassembly 

• Full Depressurization: Always fully depressurize both the hydraulic system and the high-pressure water system before removing or servicing the proximity switch or spacer. Follow lockout/tagout procedures 

• Torque Compliance: When reinstalling the proximity switch with the spacer, tighten the two M6 socket head screws to 140–160 in-lbs (16–18 Nm) 

• Thread Lubrication: Apply JL-M grease or manufacturer-recommended lubricant to the screw threads before tightening 

• Replacement Criteria: Replace the spacer if cracks, deformation, or significant wear is detected. A damaged spacer will affect sensor positioning and may cause pump cycling errors

• Cross-Reference Part Numbers: Alternative part numbers include 20453934 (proximity switch kit) which may include this spacer component