05034772 Hydraulic Cylinder Head
Product ID: 05034772 – Hydraulic Cylinder Head
Description:
This component is a hydraulic cylinder head, specifically designed for high-pressure waterjet intensifier pumps . It serves as the end closure for the hydraulic cylinder assembly, providing a mounting interface and sealing the hydraulic fluid circuit at the low-pressure side of the intensifier . This cylinder head is manufactured from high-strength alloy steel with precision-machined surfaces to ensure a leak-free fit with the cylinder body and hydraulic seals.
This part is designed for intensifier pumps utilizing a 0.88 inch (7/8") plunger and is rated for operation at 60,000 PSI (approximately 4,137 bar) . The hydraulic cylinder head is a non-handed component—it does not distinguish between left and right sides, making it interchangeable across both ends of the hydraulic cylinder assembly .
Applications:
Used as the hydraulic end closure on waterjet intensifier pumps, specifically on SL-IV, SL-V, HSEC (High Service Exchange Cycle) units, and OEM intensifier assemblies
Installed at the hydraulic oil side of the intensifier assembly, capping the ends of the hydraulic cylinder body
Compatible with intensifier pump horsepower ratings ranging from 15 to 60 HP
Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI (approximately 4,137 bar)
Features:
High-Strength Construction: Manufactured from hardened alloy steel providing excellent strength, corrosion resistance, and durability in waterjet environments
Precision-Machined Surfaces: Features precision-machined sealing surfaces and O-ring grooves to ensure leak-free operation between the cylinder head, cylinder body, and high-pressure components
High Dimensional Accuracy: CNC-machined with three-dimensional precision measurement and inspection using international standard thread gauges (ring gauges, plug gauges)
High Fatigue Resistance: Advanced solid solution double-aging heat treatment process and high-pressure bore mirror finishing increase metal fatigue resistance
Non-Handed Design: The cylinder head does not distinguish between left and right; both ends use the same common size component
Corrosion Protection: Surface treatment provides resistance to corrosion from hydraulic fluids and moisture in waterjet operating environments
Maximum Working Pressure: 4,100 bar (approximately 60,000 PSI)
Maintenance:
Installation Preparation: Before installation, ensure that there is no foreign matter in the threads of the hydraulic cylinder head. Apply lubricant to the O-ring seal .
O-Ring and Seal Replacement: When installing this hydraulic cylinder head, it is recommended to replace the oil seal together with the flange simultaneously . Always replace all O-rings and sealing elements associated with the cylinder head during each service.
Installation Method: Use a rubber hammer to gently tap the hydraulic cylinder head to install it into the cylinder. Strike the edge of the cylinder end cover crosswise (in a staggered pattern) to prevent serious misalignment that could damage the cylinder assembly .
Torque Specification (Critical): Tighten the mounting screws in a clockwise staggered order :
First pass: Tighten each screw to 27 Nm using a counter wrench (torque wrench)
Second pass (final): Tighten each screw to 43–47 Nm using a torque wrench, following the same clockwise staggered pattern
Thread Lubrication: Apply manufacturer-recommended anti-seize compound or thread lubricant to all threads during reassembly to prevent galling and ensure accurate torque application.
Inspection: During pump overhaul or preventive maintenance, inspect the cylinder head for signs of cracking, corrosion, pitting, or sealing surface damage. Pay particular attention to O-ring grooves and mounting bolt holes.
Leak Diagnosis: Hydraulic oil leakage from the cylinder head area typically indicates worn seals or O-rings at the cylinder head interface. Inspect and replace seals immediately.
Full Depressurization: Always fully depressurize both the hydraulic system and the high-pressure water system before removing or installing the hydraulic cylinder head. Follow lockout/tagout procedures.
Replacement Criteria: Replace the cylinder head if cracks, severe corrosion, thread damage, or sealing surface damage is detected. Do not attempt to repair a cracked or severely damaged cylinder head.
Cross-Reference Information: This hydraulic cylinder head is used on all SL-IV, SL-V, HSEC units, and OEM intensifier assemblies . It is listed as a component within complete intensifier assemblies (e.g., 80072333) with a quantity of two per assembly .
