Product ID: 72112358 – Hydraulic Piston Assembly (Discontinued)

Description:
This component is a hydraulic piston assembly, specifically a pressure intensifier piston assembly, designed for high-pressure waterjet cutting systems . It is a precision-engineered assembly that serves as the primary pressure-generating component within the intensifier pump. The assembly is responsible for converting hydraulic pressure from the low-pressure side into ultra-high pressure water on the high-pressure side through a differential area ratio.

This piston assembly works in conjunction with the hydraulic cylinder, high-pressure cylinder, plunger assembly, and sealing head assembly to generate cutting pressures up to 60,000–90,000 PSI (approximately 4,137–6,200 bar). The assembly typically includes the hydraulic piston body, piston seals, wear rings, retaining rings, and connection hardware for attachment to the plunger rod.

IMPORTANT DISCONTINUATION NOTICE:
This part number (72112358) has been discontinued by the manufacturer as part of an antiquated assembly . The manufacturer has replaced this component with item number SP05118716 . When servicing the intensifier pump, always use the replacement part SP05118716 rather than attempting to source the discontinued original.

Applications:

• Used as the hydraulic piston assembly within the intensifier pump of waterjet cutting systems

• Installed inside the hydraulic cylinder, converting hydraulic fluid pressure into mechanical force to drive the high-pressure plunger

• Suitable for ultra-high pressure waterjet systems operating at 60,000–90,000 PSI (approximately 4,137–6,200 bar)

• Compatible with KMT AccuStream intensifier assemblies, including SL-IV, SL-V, SL-VI series pumps

Features:

• High-Strength Construction: Manufactured from hardened alloy steel for superior strength, wear resistance, and dimensional stability under extreme pressure cycling

• Hydraulic Pressure Conversion: Engineered with a differential area design that multiplies hydraulic pressure to generate ultra-high water pressure

• Precision-Machined Surfaces: Features precision-ground piston surfaces and seal grooves for proper fit with hydraulic seals and wear rings

• High Fatigue Resistance: Designed with advanced heat treatment processes to withstand millions of pressure cycles without deformation or fatigue failure

• OEM Compatibility: Original equipment manufacturer part for KMT AccuStream waterjet systems

Maintenance:

• Critical Discontinuation Notice: This part (72112358) is discontinued. The direct replacement is SP05118716 . Do not attempt to source the discontinued original part; use the upgraded replacement when servicing the intensifier assembly

• Inspection During Overhaul: If an original piston assembly is still in use, inspect for signs of wear, scoring, galling, or seal groove damage during routine maintenance

• Seal Replacement: When servicing the piston assembly, replace all associated seals, wear rings, and O-rings. Do not reuse old sealing components

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

• Hydraulic Oil Cleanliness: Maintain proper hydraulic oil cleanliness to prevent premature wear of the piston assembly and cylinder bore. Contaminated oil with impurities will severely wear the piston and seals

• Replacement Recommendation: When replacing this discontinued component, upgrade to the replacement part SP05118716 and ensure compatibility with the existing intensifier assembly