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AeroShell Grease 5
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About AeroShell Grease 5
AeroShell Grease 5 is a high-performance aviation grease specifically formulated for use in high-speed and high-temperature applications. Its mineral oil base, combined with a Microgel® thickener, provides outstanding thermal stability, while its additive system enhances load-carrying performance and wear protection in demanding environments.
Trusted by pilots and mechanics alike, AeroShell Grease 5 is ideal for wheel bearings, engine accessories, and other fast-moving aircraft components exposed to significant heat and stress. It delivers consistent lubrication, water resistance, and corrosion protection to ensure safe, reliable performance.
PJi® offers AeroShell Grease 5 and other specialized lubricants engineered to meet the highest standards of aviation maintenance. Contact our aviation experts by phone, email, or chat for personalized recommendations and fast, same-day delivery.
Frequently Asked Questions
What is AeroShell Grease 5?
AeroShell Grease 5 is a mineral-based aviation grease formulated for high-speed and high-temperature applications. It features a clay thickener and a robust additive system that provides excellent oxidation stability, corrosion protection, and water resistance.
What are the main applications of AeroShell Grease 5?
This grease is ideal for wheel bearings, magnetos, generators, and starters – components exposed to both heat and mechanical stress. Its stability and load-carrying ability make it well-suited for high-speed bearings in aircraft and engine accessories operating under demanding conditions.
What is the operating temperature range of AeroShell Grease 5?
AeroShell Grease 5 performs reliably within a temperature range of 0°F to 300°F (-18°C to 149°C), maintaining consistent lubrication properties in both moderate cold and extreme heat.
What type of base oil and thickener does AeroShell Grease 5 use?
The grease is composed of a mineral base oil and a non-melting clay thickener, offering high thermal stability and resistance to softening at elevated temperatures. This structure allows the grease to maintain its lubricating film even under heavy loads.
Why is AeroShell Grease 5 suitable for wheel bearings?
Its formulation is specifically designed to handle high-speed rotation, mechanical stress, and elevated temperatures typical of wheel bearing operation. The grease’s ability to resist oxidation and water washout ensures long-term protection and smooth bearing performance.
Can AeroShell Grease 5 be used in helicopter components?
Yes. AeroShell Grease 5 is frequently used in helicopter bearings and accessories that operate under high-speed or high-heat conditions. Its thermal stability and oxidation resistance make it a dependable choice for rotary-wing applications.
How does AeroShell Grease 5 perform in cold temperatures?
While AeroShell Grease 5 can operate in temperatures as low as -18°C, it is not optimized for extremely cold conditions. For operations in sub-arctic or high-altitude environments, lower-temperature greases such as AeroShell Grease 6 or 33 are generally recommended.
How resistant is AeroShell Grease 5 to water washout and oxidation?
It exhibits excellent resistance to both water and oxidation. In testing, water washout at 41°C is limited to only 4.5% mass loss, while oxidation pressure loss after 100 hours at 99°C measures just 5 PSI – indicating outstanding long-term stability.
Does AeroShell Grease 5 offer corrosion protection?
Yes. It passes the ASTM D1743 rust test and copper corrosion testing, ensuring metal surfaces remain protected even in humid or marine environments. These properties make it a dependable grease for aircraft exposed to varying weather conditions.
Can AeroShell Grease 5 be mixed with other types of grease?
Mixing greases with different base oils or thickening agents is not recommended. When switching to AeroShell 5, existing grease should be thoroughly cleaned out to prevent chemical incompatibility or degradation of lubrication performance.
What are the advantages of using a clay-thickened grease like AeroShell 5?
Clay-thickened greases do not melt, even at high operating temperatures. This makes AeroShell 5 particularly effective in high-speed environments where conventional soap-thickened greases might liquefy and lose lubricity.
Which industry specifications does AeroShell Grease 5 meet?
It meets and exceeds legacy military and aviation standards, including MIL-G-3545C, DTD.878A, and DCSEA 359/A, as well as NATO Code G-359 and Joint Service Designation XG-277. These certifications affirm its suitability for demanding aircraft maintenance applications.
What is the drop point of AeroShell Grease 5?
AeroShell Grease 5 has a drop point exceeding 550°F (288°C), indicating excellent high-temperature resistance and structural stability under thermal stress.
Is AeroShell Grease 5 safe and environmentally responsible?
Yes. When used as directed, AeroShell 5 poses no significant health or safety risks. Used grease should be handled with gloves, disposed of through authorized collection points, and kept away from drains, soil, and water sources.