Lithium grease

Buyers must prioritize the NLGI Grade (National Lubricating Grease Institute), typically ranging from 000 to 6, with NLGI 2 being the most common for general industrial applications. Additionally, verify the Dropping Point, which should be at least 180°C (356°F) for standard lithium grease to ensure stability under heat. For heavy-duty applications, check the Base Oil Viscosity (usually ISO VG 150 or 220) and the Four-Ball Weld Load to determine extreme pressure (EP) performance.

General Purpose Lithium Grease is cost-effective for moderate temperatures and loads. However, Lithium Complex Grease offers a higher dropping point (260°C+) and better mechanical stability, making it superior for high-temperature automotive wheel bearings and heavy industrial machinery. If your application involves high thermal stress, always specify 'Complex' to avoid lubricant breakdown.

Suppliers should provide a Material Safety Data Sheet (MSDS) and a Technical Data Sheet (TDS). For specific industries, look for DIN 51502 classification. If the grease is used in food-processing machinery, NSF H1 registration is mandatory. For automotive exports, compliance with ASTM D4950 (GC-LB classification) ensures the product meets global warranty requirements.

Request test results for Water Washout (ASTM D1264); a loss of less than 5% is excellent for wet environments. For corrosion protection, ensure the product passes the Salt Spray Test or EMCOR rating (IP 220). These attributes are critical for construction equipment and marine applications to prevent oxidation and component seizure.

Lithium grease is generally classified as non-hazardous for transport unless it contains specific additives. However, you must obtain a Certification for Safe Transport of Chemical Goods. Ensure the supplier uses UN-approved packaging (such as steel drums or high-density plastic pails) to prevent leakage, which can lead to customs seizures or environmental fines.

Always request a Pre-Shipment Inspection (PSI) by a third party like SGS or Intertek. Specifically, ask them to perform a Penetration Test (ASTM D217) on the actual batch being shipped to ensure consistency with the approved sample. Using Made-in-China.com's secured payment services can also protect your funds until the quality is verified.

Since lithium grease prices are heavily influenced by base oil market fluctuations and lithium hydroxide costs, consider signing long-term framework agreements with price adjustment formulas. For bulk orders exceeding 5 tons, negotiate for FOB (Free On Board) terms to maintain control over shipping costs, and aim for a 10-15% discount compared to LCL (Less than Container Load) pricing.

Verify the supplier's Business License and Export Qualification. Ensure the bank account name matches the company name on the Proforma Invoice. For new suppliers found on Made-in-China.com, prioritize Audited Suppliers who have undergone on-site verification of their manufacturing facilities and quality management systems.