Product Name: End Bell, Right-Hand (RH) / Intensifier End Bell Assembly (Part No. 20458302)

Description:
The End Bell, Right-Hand (RH) 20458302 is a precision-machined structural component that serves as the hydraulic cylinder end cap on the right side of a waterjet intensifier pump assembly . It is a heavy-duty casing manufactured from high-strength, fatigue-resistant material (typically steel), designed to withstand continuous operation at 60,000 PSI (approximately 4,137 bar) .

As a critical part of the pump’s hydraulic end, the End Bell houses and supports the hydraulic cylinder, oil seals (low-pressure seals), bearings, and the reciprocating piston assembly . Its primary function is to provide a rigid, leak-proof closure for the hydraulic circuit while ensuring precise axial alignment of the plunger, which is essential for generating the ultra-high pressure water used for cutting .

This component is the right-hand counterpart to the Left-Hand End Bell (Part No. 20458299), and both ends are secured by heavy-duty tie rods that compress the entire intensifier stack .

Applications:

• Closes and seals the hydraulic cylinder assembly on the right side of the waterjet intensifier pump 

• Houses and protects the low-pressure hydraulic seals, bearings, and spacer rings 

• Provides mounting interface for the hydraulic manifold, directional shift valve, and pressure sensors 

• Suitable for 60K (60,000 PSI) and 40K ultra-high pressure waterjet systems

• Compatible with KMT, H2O Jet, and Flow waterjet intensifier systems 

Features:

• High-Strength Material: Manufactured from high-grade, fatigue-resistant material to withstand extreme hydraulic pressures and millions of pressure cycles 

• Precision Bores: Contains precisely machined internal cavities for housing oil seals and ensuring concentric alignment of the piston rod

• Specific Port Configuration: Right-hand side features specific hydraulic fluid inlet/outlet ports and sensor mounting points distinct from the left-hand side

• Component of Intensifier Assembly: Listed as Item #4 in the intensifier parts diagram 

• Sealing Integrity: Works with low-pressure seal kits (P/N 20458797) to prevent hydraulic oil leakage 

Maintenance:

Failure Diagnosis (When to Inspect/Replace):

• External Hydraulic Leakage: Visible oil weeping from the End Bell joints or the sensor ports indicates seal or gasket failure, requiring immediate inspection 

• Fluid Contamination: Milky or foamy hydraulic oil may indicate water intrusion past the seals, requiring End Bell disassembly and seal replacement

• Alignment Issues: If the intensifier is difficult to reassemble or the oil manifold shows signs of stress, the End Bells may be warped or the tie rod threads damaged 

• Bore Damage: During maintenance, inspect the internal bore for scoring, pitting, or wear that could compromise seal performance

• Thread Condition: Check the tie rod threads for galling or damage; damaged threads cannot maintain proper clamping force

Inspection and Replacement Procedures:

• Full Depressurization (Critical): Before any maintenance, place the main electrical disconnect in the OFF position, bleed down all high-pressure water lines, fully depressurize the hydraulic system, and follow lockout/tagout procedures.

• Disassembly Sequence:

1. Remove the End Cap and High Pressure Cylinder from the intensifier stack 

2. Remove the tie rod nuts and tie rods (4) retaining the End Bell to the hydraulic cylinder 

3. Remove the End Bell from the hydraulic cylinder assembly

4. Remove the snap ring, spacer, and low-pressure oil seals from the End Bell interior 

• Reassembly Best Practices (Critical):

• Use Alignment Fixture: An intensifier assembly fixture is required to square the End Bells with each other. If End Bells are assembled out of alignment, oil manifold leakage and breakage may occur 

• Low Pressure Seal Kit: When reassembling, it is best practice to replace the low-pressure hydraulic seals. Use the appropriate rebuild kit (e.g., P/N 20458797) 

• Lubrication: Apply high-pressure grease or food-grade grease to the new seals during installation to prevent dry start-up and ensure proper seating 

• Torque Compliance: Tighten the tie rod nuts in a crossing (staggered) pattern to the specific torque values listed in the equipment service manual (e.g., 160 Nm / 120 ft-lbs) 

• Replacement Criteria: Replace the End Bell if cracks are visible, the housing is severely corroded, the internal bore is worn beyond specifications, or the tie rod threads are stripped or damaged.

Cross-Reference Information:

• OEM: H2O Jet #20458302

• Flow #007303-1 

• Right-Hand End Bell Assembly 

• Component of intensifier assembly (Item 4) 

• Typically replaced with Low Pressure Seal Kit (20458797)