HT016018103-Safety-Bolt.1996.3-1
Product Name: Safety Bolt (Part No. HT016018103)
Description:
This component is a sacrificial safety bolt (sometimes referred to as a shear bolt or pressure relief bolt) designed for high-pressure intensifier pumps in waterjet cutting systems. It serves as a critical mechanical failsafe for the hydraulic circuit. Engineered with a precise shear stress rating, the bolt is deliberately designed to rupture in a controlled manner if the hydraulic pressure accidentally exceeds the system's safe operating limit[citation:1].
When an over-pressure event occurs, this bolt breaks to instantly drop the hydraulic pressure, preventing catastrophic failure of expensive components (such as the main pump manifold, cylinders, and high-pressure seals). It is a single-use component that must be replaced after each activation.
Applications:
Installed in the hydraulic manifold as the primary over-pressure protection device[citation:1].
Serves to protect the high-pressure pump, hydraulic cylinders, and intensifier assembly from pressure spikes.
Used during scheduled maintenance and as part of troubleshooting for hydraulic system failures.
Features:
Sacrificial Design: The bolt is the weakest link in the pressure circuit; it breaks to protect the rest of the system[citation:1].
Pre-Calibrated: Precisely machined to fail at a specific pressure threshold (usually slightly above the maximum working pressure of the pump).
Single Use: Must be replaced with a new bolt of exact specifications after it has been triggered; cannot be reused or repaired[citation:1].
Safety Critical: Essential for preventing dangerous high-pressure fluid injection injuries and equipment damage.
Maintenance:
Failure Diagnosis (When to Replace):
Sudden Pressure Drop: The most common sign is an immediate and complete loss of hydraulic pressure while the electric motor is still running.
Audible Indicator: A loud "pop" or snapping sound originating from the hydraulic manifold area.
Visual Inspection: Visible breakage (shearing) of the bolt head or shank.
Root Cause Analysis: The underlying cause of the over-pressure must be identified and rectified before restarting, or the new bolt will break again[citation:1].
Replacement Procedure:
Full Depressurization: Always fully depressurize the waterjet system (both high-pressure water and hydraulic circuits) and follow lockout/tagout procedures before servicing[citation:1].
Single-Use Only: Do not attempt to repair or weld a broken safety bolt. Replace it with a genuine OEM part of the correct pressure rating.
Torque Compliance: Tighten the new bolt to the specific torque value listed in the equipment service manual. Over-tightening can change the shear rating; under-tightening can cause leaks.
Spare Part Stock: Keep a spare safety bolt in stock, as failure can halt production, and having a replacement on hand minimizes downtime[citation:1].











