1. Base Composition and Standards

• Formulation: A synthetic grease thickened with complex soap, enhanced with antioxidants and molybdenum disulfide (MoS₂), providing lubrication, sealing, and anti-scuffing properties.

• Standards: Primarily complies with NB/SH/T 0459-2014 (Chinese national standard). Some references mention Q/SH303 133—2004, possibly due to variations in batches or application scenarios.

2. Performance Features

• Temperature Range: Operates effectively in -40°C to 200°C, maintaining oil film stability without thinning or drying at high temperatures. Exceptional anti-seizure performance.

• Extreme Pressure & Anti-Wear: MoS₂ additives significantly enhance wear resistance, ideal for heavy-duty gears, worm gears, and similar components.

• Corrosion Resistance: Passes the 45# steel corrosion test (100°C, 3 hours), suitable for friction components exposed to corrosive media.

• Key Parameters:

• Dropping point: 297°C

• Apparent viscosity (-30°C): 592 Pa·s

• Excellent low-temperature fluidity.

3. Applications

• Industrial Use: Heavy-load gears, sprockets, couplings, and heavy-duty bearings under intermittent operation.

• Aerospace: Meets aviation standards (e.g., Q/SH3031) for aircraft gears and threaded connections.

• Advantages Over Oils: Replacing oils with grease reduces leakage, extends relubrication intervals, and lowers maintenance costs.

4. Usage Guidelines

• Preparation: Clean and dry application areas thoroughly before use; avoid mixing with other greases.

• Packaging: Standard 250g plastic containers, customizable upon request.

5. Market & Brand Positioning

• Brand: Positioned as a premium product in the Great Wall Lubricants portfolio, emphasized for industrial and specialized applications.

• Pricing: Market price depends the requirments, targeting mid-to-high-end segments.

6. Comparisons

• Great Wall 7407 Gear Grease: Semi-synthetic oil-based vs. 7403’s full-synthetic formulation; the latter excels in high-temperature performance.

• Great Wall 7420 Open Gear Grease: Focuses on extreme pressure and anti-fretting wear for open gears.

Summary

The Sinopec Great Wall 7403 High-Temperature Gear Grease stands out in heavy industry and aerospace due to its wide temperature adaptability, extreme pressure resistance, and anti-wear properties. Users should verify compliance standards and match the grease to specific operational requirements for optimal performance.