High-Temperature EP Lithium Complex Grease (NLGI 2 / NLGI 3)
Formulated with high-viscosity mineral base oil, lithium complex soap thickener, and synergistic extreme pressure/anti-wear additives, delivering a dropping point above 260°C, superior mechanical shear stability, and exceptional resistance to water washout under heavy shock loads.
Tribological Standard Definition & Engineering Direct Answer
FOSS High-Temperature Extreme Pressure Lithium Complex Grease is a heavy-duty industrial lubricant thickened with lithium 12-hydroxystearate complex soap in high-viscosity paraffinic base oil (base oil viscosity 220 mm²/s @ 40°C). Complying with ISO 6743-9 (L-XBFHB 2/3) and DIN 51825 (KP2N-20 / KP3N-20), it delivers a high dropping point exceeding 260°C (ASTM D2265) and a continuous operational temperature envelope from -20°C to +160°C (peak excursions to 180°C). The formulation contains active sulfur-phosphorus EP chemistry providing a Four-Ball EP weld load exceeding 315 kgf (ASTM D2596), Timken OK Load above 45 lbs (ASTM D2509), and a wear scar under 0.45 mm (ASTM D2266). It exhibits remarkable mechanical stability (penetration change < 25 units after 100,000 double strokes per ASTM D217), low water washout (< 4.0% loss at 79°C per ASTM D1264), and excellent copper corrosion protection (ASTM D4048 rating 1a). Ideal for steel mill roll neck bearings, vibrating screens, asphalt plants, mining crushers, and heavy vehicle wheel bearings. Supplied in 180kg open-head steel drums and 15kg plastic pails.
Verified 208L Steel Drum Staging & Container Loading Bay
Photographic evidence from our Quanzhou plant floor and export container stuffing bay. Every batch is blended via automated mass-flow metering, sealed with waterproof tamper-evident bungs, and labeled with full batch test certificates.
Laboratory Physical & Chemical Parameters (Typical Test Values)
Every batch blended at our Quanzhou plant is certified against international testing standards before filling into UN 208L steel drums.
| Test Parameter | Test Method | NLGI 2 Specification | NLGI 3 Specification |
|---|---|---|---|
| Thickener Type | Chemical Analysis | Lithium Complex Soap | Lithium Complex Soap |
| Color / Appearance | Visual | Tacky Blue / Smooth | Tacky Blue / Smooth |
| Worked Penetration (60 strokes, 25°C, 0.1mm) | ASTM D217 | 265 - 295 | 220 - 250 |
| Prolonged Penetration (100,000 strokes change) | ASTM D217 | < +25 units | < +20 units |
| Dropping Point (°C) | ASTM D2265 | 268°C | 272°C |
| Base Oil Kinematic Viscosity @ 40°C (mm²/s) | ASTM D445 | 220 | 220 |
| Four-Ball EP Weld Load (kgf) | ASTM D2596 | 315 | 315 |
| Four-Ball Wear Scar (mm, 40 kgf, 1h) | ASTM D2266 | 0.42 | 0.40 |
| Timken OK Load (lbs) | ASTM D2509 | 45 | 50 |
| Water Washout Resistance (% loss @ 79°C) | ASTM D1264 | 3.2% | 2.8% |
| Oil Separation (% @ 100°C, 24h) | ASTM D6184 | 2.1% | 1.6% |
| Copper Strip Corrosion (24h @ 100°C) | ASTM D4048 | 1a | 1a |
Primary Industrial Applications & Bearing Compatibility
Engineered specifically for high-stress industrial machinery, minimizing friction coefficients and extending component service life.
Steel Mill Run-Out Tables & Roller Bearings
Maintains grease consistency under high radiant heat and continuous water spray cooling.
Vibrating Screens & Mining Crushers
High film strength prevents cage fretting and bearing raceway spalling under severe G-forces.
Asphalt Plants & Kiln Car Wheel Bearings
Dropping point > 260°C ensures grease stays in bearing cavities without liquefying or leaking.
Heavy Commercial Fleet Wheel Hubs
Exceeds extended-drain wheel bearing specifications for long-haul tractors and dump trucks.
Batch Quality Control & Standard Verification
Strict five-stage quality checkpoint from raw base oil tank unloading to finished drum sealing.
Dropping Point Verification (ASTM D2265)
Every kettle batch verified to exceed 260°C before packaging.
Four-Ball EP Weld Load Test (ASTM D2596)
Confirms weld load >= 315 kgf to protect bearings against shock seizures.
Worked Cone Penetration Test (ASTM D217)
Ensures exact NLGI 2 (265-295) and NLGI 3 (220-250) consistency.
24-Month Sealed Retention Archive
Archived 500g retained samples with complete batch analysis certificate.
Export Packaging, Palletization & Container Loadability
Supplied in standard 180kg open-head steel drums with clamping ring (4 drums per pallet, 80 drums per 20GP container = 14,400 kg net) and 15kg plastic pails (48 pails per pallet, 960 pails per 20GP container = 14,400 kg net).
Frequently Asked Technical & Procurement Questions
Clarifications on viscosity grades, synthetic formulations, oil drain intervals, and container freight.
What is the advantage of lithium complex grease over standard lithium grease?
When should I choose NLGI 2 versus NLGI 3 consistency?
Can FOSS High-Temperature Lithium Complex Grease mix with other greases?
Request Direct Factory Quotation & Technical Dossier
Receive competitive FOB Xiamen / CIF port container pricing, batch Certificate of Analysis (CoA), and sample dispatch confirmation.