Aeroshell 14 Aviation Grease

AeroShell Grease 14 is a specialized multi-purpose helicopter grease formulated for demanding rotor and airframe lubrication applications. It is a mineral oil-based grease thickened with calcium soap and formulated with anti-fretting, corrosion-inhibiting, and oxidation-inhibiting properties.

AeroShell Grease 14 is particularly well suited for helicopter main and tail rotor bearings, splines, and other components where fretting protection and resistance to moisture-induced corrosion are important. Its useful operating temperature range is -54°C to +75°C (-65°F to +167°F).

AeroShell Grease 14 Features

• Helicopter-specific formulation: Developed for multi-purpose lubrication applications on helicopters.
• Anti-fretting protection: Formulated to help protect components subjected to fretting and oscillating movement.
• Moisture resistance: Provides resistance to moisture-related corrosion in demanding rotor and airframe applications.
• Corrosion inhibition: Helps protect lubricated metal surfaces against corrosion.
• Oxidation inhibition: Formulated for improved grease stability during service.
• Mineral oil base: Uses a mineral oil base with calcium soap thickener.
• Wide low-temperature capability: Effective over a useful temperature range extending down to -54°C (-65°F).

Typical AeroShell Grease 14 Applications

AeroShell Grease 14 is primarily associated with helicopter lubrication applications where anti-fretting performance is important. Shell specifically identifies helicopter main and tail rotor bearings and splines among its key applications.

AeroShell Grease 14 Specifications & Approvals

Specifications and approvals should always be verified against the latest manufacturer documentation and the applicable aircraft or component maintenance documentation before use.

Temperature Range

AeroShell Grease 14 for Helicopter Maintenance

For helicopter MRO facilities and maintenance personnel, AeroShell Grease 14 is particularly relevant when the maintenance requirement calls for a grease with anti-fretting and corrosion protection. Its established use in main and tail rotor bearing applications makes it a specialized product within the AeroShell grease range.

Unlike broader-purpose products such as AeroShell Grease 33 or AeroShell Grease 22, Grease 14 should be viewed primarily as a helicopter-focused grease for applications where its specific specification and anti-fretting characteristics are required. Always verify the required lubricant against the applicable helicopter maintenance manual, component maintenance manual, OEM specification, or other approved technical documentation.

Important Compatibility Consideration

AeroShell Grease 14 is a mineral oil-based, calcium-soap-thickened grease. Greases with different base oils or thickener systems should not be assumed to be compatible. Shell's aviation grease guidance specifically cautions against mixing greases with different base oils or thickeners because compatibility problems can affect grease performance, working stability, and seal compatibility.

When changing from another grease, follow the applicable aircraft or component maintenance instructions and verify compatibility before introducing AeroShell Grease 14.

Frequently Asked Questions

What is AeroShell Grease 14 used for?

AeroShell Grease 14 is a multi-purpose helicopter grease particularly suited to helicopter main and tail rotor bearings, splines, and other applications where anti-fretting and corrosion protection are important.

What temperature range does AeroShell Grease 14 cover?

AeroShell Grease 14 has a useful operating temperature range of -54°C to +75°C (-65°F to +167°F).

What type of grease is AeroShell Grease 14?

AeroShell Grease 14 is a mineral oil-based grease thickened with calcium soap. It is formulated with anti-fretting, corrosion-inhibiting, and oxidation-inhibiting properties.

What specification does AeroShell Grease 14 meet?

Shell currently lists AeroShell Grease 14 to MIL-G-25537C, DEF STAN 91-51, NATO G-366, and Joint Service XG-284, with Rolls-Royce OMat433 also listed.

Why is AeroShell Grease 14 used on helicopter rotor bearings?

Its anti-fretting properties make AeroShell Grease 14 particularly suited to helicopter main and tail rotor bearing applications, where oscillating movement and fretting can be important lubrication concerns.

Can AeroShell Grease 14 be mixed with another grease?

Grease compatibility should be verified before mixing products. Shell advises against mixing greases with different base oils or different thickener types because the resulting mixture can have degraded physical properties or service performance. Follow the applicable maintenance documentation when changing grease types.

Note: Always refer to the latest manufacturer Technical Data Sheet (TDS), applicable OEM documentation, and aircraft/component maintenance manual for specific application, compatibility, servicing, and approval requirements.