Episode notes
How to choose between lithium complex greases — specifically Whitmore® Omnilith 500 and Omnilith GL — comes down to weld point, viscosity, and washout resistance. Get those three wrong and you're replacing bearings instead of running production. This episode breaks down every critical spec so procurement managers and reliability engineers can lock in the right formulation before the next RFQ hits your desk.
Extreme pressure grease performance starts with the four ball EP weld point. Omnilith 500 Grade 2 delivers an ASTM D-2596 weld point of 800 kg — the spec that matters when you're lubricating cranes, hoists, stackers, and mobile construction equipment under severe shock loads. Omnilith GL (NLGI Grade 1 and Grade 2) tests at 400 kg, with Load Wear Index values of 56.38 (Grade 1) and 46.51 (Grade 2). That 400 kg rating exceeds automotive requirements comfortably, but for heavy industrial antifriction and plain bearings taking repetitive impact, Omnilith 500 is the call. Spec it at https://www.pe-energy.com/product/omnilith-500-m-ep-2-50-ct-greases/
Base oil viscosity drives film strength — and these two products are built for different speed ranges. Omnilith 500 Grade 2 runs a polymer-blended base oil at 455 cSt at 40°C (278 cSt without polymer), producing the thick, tacky film that slow-to-medium-speed heavily loaded bearings need. Continuous service reaches 350°F (177°C), with occasional peaks to 450°F (232°C). Omnilith GL uses a lighter 220 cSt at 40°C base oil across both Grade 1 and Grade 2, optimized for higher-speed automotive wheel bearings — especially front disc brake applications where thermal spikes are routine. Its dropping point exceeds 500°F (260°C), so the grease stays in the hub when brakes cook. Browse caulk-tube packaging for job-site applications: https://www.pe-energy.com/product/omnilith-500-ep-2-caulk-tubes-greases/
Water washout resistance separates these formulas in wet industrial environments. Omnilith 500 posts less than 5% loss on the ASTM D-1264 Water Washout test — the right number for textile washing machines, service stations, and industrial pumps constantly exposed to water ingress. Omnilith GL comes in under 15% on the same test. Both products pass the ASTM D-1743 Rust Test and earn a 1B rating on ASTM D-4048 Copper Strip Corrosion (modified, 212°F/100°C, 3 hours), protecting steel and yellow-metal components against oxidation and chemical attack. If your application sees standing water or steam, Omnilith 500 wins on water washout resistance.
Low temperature pumpability determines whether your auto-lube system actually delivers in winter. Omnilith 500 EP 2 pumps to 10°F (-12°C) on a Lincoln Ventmeter at 400 psi; if your ambient drops to 0°F (-18°C) or below, size down to Omnilith 500 EP 1 for easier flow in centralized systems. Omnilith GL Grade 1 pushes the envelope further — 5°F (-15°C) at 400 psi and -5°F (-21°C) at 600 psi — giving you the best cold-weather automated delivery of the two product lines. Omnilith GL is also NLGI GC-LB certified, qualifying it for automotive chassis and high-temperature wheel bearing specs right out of the gate. Order pail quantities here: https://www.pe-energy.com/product/omnilith-gl-2-pail-greases/
Both greases use a lithium complex soap-base thickener that resists structural breakdown under shear and high heat — the shared DNA that makes the Whitmore® Omnilith line a reliable industrial bearing lubrication platform. Whether your RFPs call for an 800 kg weld point on a crane fleet or NLGI GC-LB certification on a vehicle maintenance contract, wholesale orders scale from a single spare to a full fleet rollout. See the complete Whitmore catalog: https://www.pe-energy.com/brand/whitmore/
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