Anhydrous Calcium Grease Formulation
Anhydrous Calcium Grease: General Overview, Composition and Formulation
Anhydrous calcium grease uses a calcium soap system that does not depend on retained water for its structure. It can offer better temperature capability than conventional hydrated calcium grease while retaining useful water resistance and adhesion.
The formulation is developed around the intended temperature, load, bearing speed, water exposure, pumping requirements and NLGI grade. Raw-material purity, soap structure, base-oil viscosity and cooling history strongly influence the finished grease.
General Composition of Anhydrous Calcium Grease
- COMPONENT | PURPOSE
Base oil
Mineral, semi-synthetic or synthetic oil selected for the operating temperature, speed and load.
Anhydrous calcium thickener
Provides the grease structure, adhesion and water-resistant character without relying on retained water.
Antioxidant
Helps control base-oil oxidation at elevated temperature.
Rust and corrosion inhibitor
Protects metal surfaces in humid and wet service.
Antiwear or EP additive
Improves wear protection and load-carrying performance when required.
Tackifier or polymer
Improves adhesion, texture and resistance to displacement.
Dye or appearance modifier
Provides natural, coloured or customer-specific appearance.
Final component percentages are established through laboratory development and testing.
Production Process and Lubechem Technical Support
- TYPICAL MANUFACTURING SEQUENCE
1. Select and charge the required portion of base oil.
2. Form or incorporate the anhydrous calcium thickener under controlled conditions.
3. Manage temperature, reaction completion and moisture removal.
4. Add finishing oil progressively to adjust consistency.
5. Cool the grease under controlled agitation.
6. Add performance additives at compatible temperatures.
7. Homogenise or mill to obtain uniform texture.
8. Deaerate, test and release the finished batch.
LUBECHEM SUPPORT
• Formula, composition and raw-material selection
• Manufacturing SOP and batch sheet
• Video-guided laboratory development
• NLGI and performance optimisation
• Pilot and commercial scale-up
• Equipment and plant guidance
• Production troubleshooting and operator training
Typical Specifications, Testing and Applications
- TYPICAL DEVELOPMENT TARGETS
NLGI grade: commonly 0–3
Worked penetration: ASTM D217
Dropping point: formulation-dependent and normally higher than hydrated calcium grease
Water washout: ASTM D1264
Rust prevention: ASTM D1743
Oil separation: ASTM D1742 or equivalent
Four-ball wear/weld: ASTM D2266 and ASTM D2596 for EP grades
Low-temperature mobility: evaluated for centralized systems
COMMON APPLICATIONS
• Automotive chassis and bearings
• Agricultural and construction equipment
• Wet industrial environments
• Centralized lubrication systems
• General-purpose machinery
Final acceptance limits require validated laboratory and plant batches.
Anhydrous Calcium Grease: Frequently Asked Questions
- How does it differ from conventional calcium grease?
It uses a different thickener system and does not rely on retained water for grease structure.
Can it replace lithium grease?
It may be suitable for selected applications, but performance and compatibility must be verified.
Can EP grades be developed?
Yes, using compatible antiwear and extreme-pressure additives.
Can Lubechem adapt it to an existing plant?
Yes. The process can be adjusted for available kettles, mills and finishing equipment.
Is commercial validation necessary?
Yes. Laboratory development should be followed by controlled pilot and production trials.
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