I. Fundamental Properties and Composition

1. Basic Parameters

• Composed of synthetic lubricating oil, metal soap-based thickener, and multiple additives. Key metrics:

• Worked cone penetration: 280 (0.1mm)

• Dropping point: 154°C

• Steel mesh oil separation rate (100°C/30h): 2.45%

• Evaporation loss (100°C/22h): 3.6%

• Outstanding Low-Temperature Performance:

• Starting torque at -55°C: 1.1 N·m

• Running torque at -55°C: 0.09 N·m

• Ensures reliable startup for precision instruments in extreme cold.

• High-temperature stability: Maintains performance after 1,200 hours at 121°C.

2. Temperature Range

• Operating range: -54°C to 71°C.

• Ideal for aviation applications in low-temperature environments (e.g., high-altitude or polar missions).

• High-temperature limit is lower than competitors like Great Wall 7028 grease (-40°C to 150°C).

II. Applications and Compatibility

1. Core Use Cases

• Primarily used for large ball bearings in helicopter swashplates, oscillating bearings, and aviation wheel bearings.

• Designated lubricant for domestic aircraft (e.g., ARJ21) and used in major aerospace projects (e.g., Shenzhou spacecraft, Tiangong-1).

2. Specialized Compatibility

• Excellent compatibility with rubber seals (e.g., helicopter wheel hub seals), preventing aging caused by lubricants.

• High load-bearing capacity supports extreme pressures during takeoff/landing (e.g., inner bearings承受 up to 1.5×10^5 N).

III. Certifications and Market Positioning

1. Compliance

• Meets GJB1602-1993 military standards.

• Passes rigorous tests:

• Oxidation stability: 0.007MPa pressure drop over 100h

• Corrosion resistance: Grade 1 after 48h at 52°C.

2. Market Competitiveness

• Dominates military and domestic aircraft markets. Competes with Sinopec Great Wall 7028 and RIPP 7450 through differentiation (7950 excels in low-temperature performance; 7028 covers wider temperature ranges).

• Packaging: 3kg pails with 13% VAT invoices, ideal for bulk procurement.

IV. Usage and Maintenance Guidelines

1. Operational Best Practices

• Avoid mixing with other greases to prevent chemical degradation.

• Use dedicated hydraulic/pneumatic refilling systems for maintenance to replace manual operations.

2. Storage Requirements

• Reseal after opening to avoid contamination by moisture or dust.

V. Limitations

• Temperature Ceiling: Maximum operating temperature (71°C) limits use in high-heat zones (e.g., near engines), requiring alternative greases.

• Mechanical Impurities: Contains trace particles (320 particles/cm³, 0.025–0.125mm size). Requires filtration for precision bearing applications.

Conclusion

RIPP 7950 Aviation grease is a critical lubrication solution for China’s aviation sector (especially helicopters and regional aircraft), excelling in low-temperature performance, extreme load capacity, and military-grade reliability. Its proven stability in harsh environments makes it indispensable, though high-temperature scenarios necessitate complementary products. Future formula optimizations could expand its temperature range, further strengthening China’s position in high-end lubricant technology.