Great Wall CMA K Grease for Bellows and Flexible Couplings NLGI Grade 2 and 3 Heavy Duty Lubricant for Caterpillar Excavators Bulldozers and Construction Machinery 0.3kg per Unit 24 Units per Case

Great Wall CMA-K Heavy Duty Grease – Bellows, Flexible Coupling & Construction Machinery Lubricant

Great Wall CMA-K Grease is a professional-grade heavy-duty lubricating grease specifically formulated for bellows (rubber boots), flexible couplings, CV joints, and high-load articulation points on construction machinery, excavators, bulldozers, and heavy equipment. Available in NLGI Grade 2#, Grade 3#, and KL-G formula — each in 0.3kg units, sold in cases of 24.

CMA-K grease is widely recognized in the construction and heavy equipment industry as a trusted lubricant for Caterpillar (CAT) and other major brand excavators, loaders, and earthmoving equipment, particularly for bellows and flexible coupling applications where standard greases are unsuitable.

Key Performance Features

• Specially formulated for bellows & flexible couplings – Compatible with rubber bellows (boots) and flexible coupling materials; does not cause swelling, cracking, or degradation of rubber and elastomer components — a critical requirement that standard greases often fail to meet
• Superior adhesion under vibration – Stays firmly in place under the heavy vibration, shock loading, and continuous flexing of bellows and coupling joints on construction machinery
• Excellent water resistance – Protects against moisture ingress, mud contamination, and corrosion in outdoor construction site environments
• Wide operating temperature range – Maintains effective lubrication in both high-temperature summer conditions and cold winter operation
• Anti-wear & EP protection – Reduces wear on metal contact surfaces within couplings and joints under high loads and shock forces
• Anti-rust protection – Guards metal components against oxidation and corrosion during operation and storage
• Compatible with Caterpillar (CAT) equipment – Trusted for use on CAT excavators, bulldozers, motor graders, and other heavy construction machinery

Available Variants

• Grade 2# – 0.3kg – Standard medium consistency; suitable for most bellows and flexible coupling applications in year-round conditions. The most commonly used grade for general construction machinery maintenance.
• Grade 3# – 0.3kg – Stiffer consistency; recommended for high-temperature conditions, heavy-load applications, or where grease retention in the bellows is critical
• KL-G – 0.3kg – Specialized KL-G formula for specific coupling and bellows applications requiring enhanced rubber compatibility and performance characteristics

Recommended Applications

• Excavator boom, arm, and bucket cylinder bellows (rubber boots)
• Flexible couplings on excavator swing motors and travel drives
• CV joint boots and driveshaft bellows on construction vehicles
• Bulldozer and motor grader articulation joint bellows
• Loader and crane flexible coupling lubrication
• General heavy construction equipment bellows and boot maintenance
• Caterpillar (CAT) excavator and bulldozer bellows service

Why CMA-K for Bellows Applications?

Standard lithium or calcium greases can cause rubber bellows to swell, soften, or crack over time, leading to premature boot failure and contamination of the joint. CMA-K grease is specifically formulated to be compatible with rubber and elastomer materials, making it the correct choice for bellows and flexible coupling lubrication where rubber compatibility is essential.

Product Specifications

• Brand: Great Wall (长城)
• Product code: CMA-K
• NLGI Grades: 2#, 3#, KL-G
• Net weight per unit: 0.3 kg
• Units per case: 24
• Rubber compatibility: Yes (suitable for bellows and flexible couplings)
• Water resistance: Excellent
• Anti-wear / EP: Yes
• Anti-rust: Yes

Trusted by construction fleet operators, equipment maintenance teams, and heavy machinery workshops for reliable bellows and coupling protection. Select the grade that matches your equipment specifications and operating conditions.