RELIEF FITTING - Lincoln Industrial

The Lincoln Industrial 5677 Relief Fitting is a robust, professional-grade component engineered to precisely manage pressure within critical lubrication systems. Designed for demanding automotive, industrial, and heavy equipment applications, this top-vent relief grease fitting ensures operational safety and prolongs equipment lifespan by preventing over-pressurization during lubrication or operation. Its durable construction and intelligent design make it an essential tool for technicians maintaining complex machinery.

Key Features

• Controlled Pressure Release: This fitting is designed to release excess oil or grease pressure, activating within a 1-5 psi (0.07-0.34 bar) range to protect equipment components from damage due to pressure build-up.
• Visual Pressure Indication: Equipped with twin vent ports, the 5677 provides a clear visual indication when pressure is being relieved, allowing technicians to monitor lubrication processes effectively.
• Durable Construction: Manufactured from zinc-plated steel, the fitting offers excellent resistance to corrosion and wear, ensuring long-term reliability in harsh operating environments.
• Internal Component Protection: All operating parts are housed internally, safeguarding them from dirt, debris, and potential external damage, contributing to consistent performance.
• Integrated Ball Check: A ball check located at the base of the valve body prevents the ingress of foreign material into the bearing or gear case, maintaining lubricant purity.

Applications

The Lincoln Industrial 5677 Relief Fitting is indispensable in professional settings requiring precise pressure management in lubrication systems. It is commonly utilized in:

• Automotive Maintenance: Protecting axle housings, steering components, and other grease-lubricated parts on trucks, cars, and heavy-duty vehicles.
• Agricultural Equipment: Ensuring proper lubrication and preventing seal damage in tractors, harvesters, and other farm machinery.
• Construction Machinery: Safeguarding bearings and gear cases in excavators, loaders, and other robust equipment from excessive pressure.
• Industrial Manufacturing: Maintaining optimal pressure in various machinery, protecting critical bearings and ensuring efficient operation in manufacturing and processing plants.
• Marine Applications: Used on various marine equipment where controlled grease pressure is vital for component longevity.

Specifications

• Model Number: 5677
• Manufacturer: Lincoln Industrial
• Pressure Range: 1-5 psi (0.07-0.34 bar)
• Thread Size: 1/8"-27 PTF Spl Short
• Material: Zinc Plated Steel
• Hex Size: 7/16"
• Overall Length: 0.5"
• Shank Length: 0.28"