Overview
General Purpose Lithium Grease is one of the most versatile lubricants in industrial applications, consisting of mineral or synthetic oil thickened with lithium soap. Developed in the mid-20th century, it quickly became the standard for multipurpose lubrication due to its balanced performance characteristics. The grease typically carries an NLGI #2 consistency rating, making it suitable for manual and automated lubrication systems. This lubricant is particularly valued for its ability to maintain performance across a wide temperature range (-20°C to 120°C for standard formulations) while resisting water washout. Its popularity stems from offering good performance at a competitive price point, making it the first choice for general industrial maintenance applications where specialized greases aren't required.
Physical and Chemical Properties
The physical properties of general purpose lithium grease include a smooth, buttery texture with a typical penetration value of 265-295 (worked, 60 strokes) according to ASTM D217 standards. Its yellow to brown coloration comes from additives and the base oil used. Chemically, the grease demonstrates excellent oxidation stability due to the lithium thickener's ability to prevent oil separation. Key performance characteristics include a dropping point between 180-200°C, which indicates its upper temperature limit before breakdown. The grease maintains its structure well under shear forces, with mechanical stability ratings typically showing less than 15% penetration change after prolonged working. Its water resistance is quantified by low water washout values (generally <5% in ASTM D1264 testing), making it suitable for damp environments.
Main Applications
This grease finds extensive use in industrial equipment including electric motors, pumps, conveyors, and gearboxes operating under moderate loads and speeds. In automotive applications, it lubricates wheel bearings, chassis points, and universal joints where all-purpose protection is needed. The construction industry relies on it for earthmoving equipment maintenance, while agricultural machinery uses it for implement lubrication. Manufacturing plants commonly specify general purpose lithium grease for assembly line equipment where centralized lubrication systems require a single, versatile product. Its balanced properties make it suitable for both rolling and sliding contacts in machinery operating within its temperature range. The grease is particularly valued in maintenance operations where keeping multiple specialized greases isn't practical.
Safety and Storage
While generally safe for industrial use, proper handling precautions should be observed with lithium grease. Personnel should wear gloves when applying manually to prevent skin contact that could lead to dermatitis with prolonged exposure. Eye protection is recommended when pressure greasing to prevent accidental splashing. Storage should be in original, sealed containers to prevent contamination from dirt or moisture which could degrade performance. The grease should be kept in a cool, dry place away from direct sunlight and extreme temperatures that could accelerate oil separation. Bulk storage drums should be kept upright with bungs tight to prevent moisture ingress. Shelf life is typically 2-3 years when stored properly, though performance should be verified if the grease shows signs of hardening, oil separation, or discoloration before use.
B2B Procurement Guide
Industrial buyers should specify NLGI grade (typically #2), base oil viscosity (commonly ISO 100-150), and any required additives (such as anti-wear or rust inhibitors) when sourcing general purpose lithium grease. Bulk purchases (drums or pails) offer significant cost savings over cartridge packaging. Consider manufacturers that provide batch consistency certificates for critical applications. Evaluate suppliers based on their ability to provide technical data sheets with complete performance specifications. Just-in-time delivery options can help reduce storage requirements. For specialized applications, some suppliers offer custom formulations with enhanced properties. Always verify compatibility when switching grease suppliers, as thickener concentrations and additive packages can vary between manufacturers while still meeting general specifications.
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