1. Core Performance and Formulation

1. Formulation

• Base Oil: Synthetic oil (ester or hydrocarbon-based) for high/low-temperature stability.

• Thickener: Lithium soap optimized for colloidal structure and mechanical stability.

• Additives: Molybdenum disulfide (MoS₂) as the primary extreme pressure (EP) anti-wear agent, supplemented with antioxidants, rust inhibitors, and water resistance agents.

2. Key Properties

• EP and Anti-Wear Performance: MoS₂ forms a lubricating film under high pressure, enhancing anti-scuffing capability (Hertz load ≥680N).

• Wide Temperature Range: Operates from -60°C to 120°C, maintaining low startup torque at extreme low temperatures (e.g., -73°C) and excellent oxidation stability at high temperatures.

• Stability:

• Colloidal Stability: Steel mesh oil separation ≤2.1% (no softening or leakage risk).

• Water Resistance: Water washout loss ≤3.33% (suitable for humid/salt-spray environments).

• Eco-Friendliness: Free of heavy metals (lead, cadmium), nitrites, and harmful substances. Complies with GJB 942-1990 and MIL-G-23827B.

2. Application Scenarios

1. Aviation Sector

• Aircraft Landing Gear Systems: Lubricates gears, splines, and sliding steel surfaces under high-impact loads.

• Helicopter Transmission Components: Rotor bearings, pins, and screws in high-vibration environments.

• Import Substitution: Replaces imported products like AeroShell Grease 17 and AeroShell Grease 33MS, reducing foreign dependency.

2. Industrial and Civilian Sectors

• Railway Locomotives: Lubricates heavy-duty gears, rolling bearings, and friction assemblies.

• Automotive and Marine: High-temperature bolts, threaded joints, and heavy-load sliding parts.

• High-Temperature Industrial Equipment: Rolling bearings in imported machinery for petrochemical and textile industries.

3. Technical Specifications and Test Data

4. Comparative Analysis with Similar Products

1. 7254 vs. 7253

• Functional Differences: 7254 contains MoS₂ for higher-load applications (e.g., heavy gears), while 7253 prioritizes wide-temperature adaptability (-73°C–121°C).

• Applications: 7254 excels in railways and aviation; 7253 focuses on precision instruments and low-temperature startups.

2. 7254 vs. 7014

• Temperature Range: 7014 offers superior high-temperature resistance (-60°C–200°C) for large passenger aircraft gears.

• Additives: 7014 uses organic gelling agents instead of MoS₂ for high-temperature lubrication.

3. International Comparisons

• AeroShell Grease 17: 7254 outperforms in EP and low-temperature startup torque but slightly lags in high-temperature durability compared to AeroShell 33MS.

5. Production and Supply

1. Manufacturer and Standards

• Primary Manufacturer: Sinopec Research Institute of Petroleum Processing (RIPP).

• Standards:

• Domestic: GJB 940-90 (military), GJB 942-1990 (general aviation).

• International: MIL-G-23827B (U.S. military), NATO-compliant.

2. Supply Chain and Market

• Packaging: 3.0 kg/canister, 6 canisters per box. Requires sealed, dark storage.

• Price Trends: Influenced by raw material costs (e.g., MoS₂) and aviation market demand.

6. Usage Guidelines

1. Operational Protocols

• Cleanliness: Remove old grease and contaminants before application.

• Compatibility Testing: Required for contact with plastics or rubber.

• No Mixing: Mixing with other greases may destabilize the colloidal structure.

2. Maintenance Recommendations

• Regular Inspection: Monitor grease condition every 500 hours in high-temperature or heavy-load environments.

• Storage: Store sealed below 25°C in dry conditions; reseal after opening.

Summary and Industry Impact

RIPP 7254  Aviation Grease, with its high-load capacity, wide-temperature adaptability, and eco-friendly properties, has become a benchmark for domestic aviation lubrication. Its performance rivals international counterparts (e.g., AeroShell) while offering cost advantages, driving localization in aviation equipment. Future upgrades will further bolster China’s competitiveness in advanced manufacturing.