Product ID: 05141106 – Hydraulic Head Screw / Socket Head Cap Screw (Intensifier Pump Fastener)

Description:
This component is a hydraulic head screw, specifically a high-strength socket head cap screw (SHCS), designed for use in waterjet intensifier pumps and cutting systems . It is a precision-engineered threaded fastener with metric dimensions: M14 x 2.0 thread pitch x 60mm length . The screw is manufactured from property class 12.9 alloy steel, offering exceptional tensile strength, hardness, and fatigue resistance for demanding high-pressure applications . This fastener is used to secure critical hydraulic assemblies, including cylinder heads, flanges, and other components within the intensifier pump structure .

Applications:

• Used in waterjet intensifier pumps to secure hydraulic cylinder heads to the cylinder body or pump frame .

• Installed as a flange mounting bolt for high-pressure (HP) components within SL-IV, SL-V, SL-VI, and Classic series intensifier assemblies .

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

• Compatible with intensifier pump models ranging from 15 HP up to 100 HP, including SL-I, SL-IV, SL-V, SL-VI, and Neoline series .

Features:

• High-Strength Grade 12.9 Material: Manufactured from alloy steel with property class 12.9 rating, providing superior tensile strength (approximately 1,220 MPa minimum) and hardness for demanding hydraulic applications .

• Precision-Machined Metric Thread: M14 x 2.0 coarse thread pitch ensures consistent torque performance and a secure, leak-free fit during assembly .

• Hex Socket Drive: Features an internal hexagon (Allen) drive, allowing secure tightening in confined spaces within the intensifier pump assembly .

• Corrosion-Resistant Finish: Surface treatment provides resistance to corrosion from hydraulic fluids and moisture in waterjet operating environments .

• Standardized Dimensions: Length of 60mm from under the head to the tip, ensuring compatibility with standard flange and cylinder head mounting configurations .

• Precision Thread Rolling: CNC-machined and thread-rolled for consistent dimensional accuracy and fatigue resistance under cyclic loading .

Maintenance:

• Inspection: During pump overhaul or preventive maintenance, inspect each screw for signs of thread damage, galling, corrosion, stretching, or fatigue cracking. Replace any screw showing visible damage or deformation .

• Thread Lubrication: Before reassembly, apply manufacturer-recommended anti-seize compound or thread lubricant to the threads to prevent galling and ensure accurate torque application .

• Torque Specification (Critical): Tighten hydraulic head screws to the specific torque values listed in the equipment service manual . Typical procedure: first pass to 27 Nm in a clockwise staggered pattern, then final pass to 43–47 Nm following the same staggered sequence .

• Staggered Tightening Pattern: Always tighten screws in a clockwise (cross) staggered pattern to ensure even clamping force distribution and prevent misalignment or seal damage .

• Hole Preparation: Before installing new screws, ensure the threaded holes in the cylinder head or flange are clean, dry, and free from debris, old thread sealant, or corrosion .

• Concurrent Seal Replacement: When reinstalling hydraulic cylinder heads, it is recommended to replace oil seals and O-rings simultaneously to ensure leak-free operation .

• Use Correct Tools: Use a properly sized hex key (Allen wrench) or socket bit to avoid stripping the hex socket drive. Ensure the tool is fully seated before applying torque.

• Replacement Interval: Replace screws as a set during major pump rebuilds or if any screw shows signs of stretching (thread necking), cracking, or corrosion. Do not reuse screws that have been over-torqued or damaged .

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