Lesson 1Standards and terminology: ISO cleanliness codes, ASTM, NLGI, DIN/ISO references relevant to maintenanceThis part explains key lubrication standards and terms used in industry, like ISO cleanliness codes, ASTM and DIN/ISO tests, and NLGI grades. It helps with clear communication and specs in maintenance programmes here.
ISO particle cleanliness code structureASTM test methods for lubricantsDIN and ISO viscosity classificationNLGI grease consistency numberingReading lube labels and data sheetsLesson 2Lubrication regimes: boundary, mixed, elastohydrodynamic, hydrodynamicThis part describes boundary, mixed, elastohydrodynamic, and hydrodynamic lubrication regimes. It links film thickness to surface roughness, load, and speed, showing how to pick lubricants and practices for our equipment.
Stribeck curve and key parametersBoundary lubrication characteristicsMixed lubrication in real contactsEHL in rolling element bearingsFull hydrodynamic film conditionsLesson 3Lubricant base stocks: mineral, PAO, ester, PAG — properties and selection criteriaThis part looks at main lubricant base stocks like mineral, PAO, ester, and PAG. It compares their properties, stability, seal fit, and cost to help choose the right one for different jobs in our plants.
API mineral base oil groupsPAO synthetics: strengths and limitsEster fluids: benefits and cautionsPAG fluids and water-mixable typesMatching base stocks to applicationsLesson 4NLGI consistency for greases and how consistency affects pumpability and film formationThis part explains NLGI grease grades, how cone penetration shows hardness, and how consistency affects pumping, channeling, and film in bearings and systems under our varying temperatures and speeds.
Cone penetration and NLGI gradesConsistency vs pumpability in linesChanneling and grease distributionEffect on film thickness in bearingsTemperature impact on consistencyLesson 5Contamination effects: particulate, water, and incompatible lubricants — consequences and limitsThis part shows how dirt, water, and wrong mixes harm lubricants and parts. It covers failure types, cleanliness goals, water limits, and ways to check, stop, and fix contamination on the job.
Particle-induced wear mechanismsWater contamination sources and limitsEffects of mixing foreign lubricantsCleanliness targets and ISO codesFiltration and dehydration practicesLesson 6Viscosity fundamentals: viscosity, viscosity index, ISO VG, SAE grades, temperature effectsThis part builds understanding of viscosity, index, ISO VG and SAE grades, and temp effects. It shows how to pick and check the right viscosity for bearings, gears, and hydraulics in our setups.
Dynamic vs kinematic viscosityViscosity index and its significanceISO VG grades and selection rulesSAE engine and gear oil gradesTemperature–viscosity charts and toolsLesson 7Additives: anti-wear (ZDDP), EP, antioxidants, rust/corrosion inhibitors, anti-foam, detergentsThis part details common additives like anti-wear, EP, antioxidants, rust inhibitors, anti-foam, and detergents. It explains what they do, limits, and how they affect lubricant choice and lifespan.
Anti-wear and EP chemistry basicsOxidation control and antioxidantsRust and corrosion inhibitor rolesAnti-foam and air release additivesDetergent and dispersant actionsLesson 8Basic lubricant compatibility and mixing rules (base oil and thickener compatibility)This part covers lubricant mixing rules, focusing on base oils and grease thickeners. It shows how to read charts, risks of mixing, and safe switch-over to avoid sludge, softening, or seal issues.
Base oil family compatibility basicsGrease thickener compatibility matrixRisks of mixing incompatible lubricantsFlushing and changeover best practicesUsing OEM and supplier guidanceLesson 9Principles of friction, wear, and lubrication mechanismsThis part introduces friction and wear basics, like adhesive, abrasive, fatigue wear. It explains how lubrication forms films to separate surfaces and lengthen part life in our machines.
Types of friction in machine elementsAdhesive, abrasive, and fatigue wearSurface roughness and contact areaRole of lubricant films in protectionRelating wear modes to field symptomsLesson 10Types of lubricants: oils, greases, solid lubricants, and their general usesThis part sorts oils, greases, solids, how they differ, where used, and how method, speed, load, environment pick the form for industrial gear.
Liquid oils and circulation systemsGreases for bearings and couplingsSolid lubricants: MoS2 and graphiteDry-film and boundary lube coatingsSelecting form based on duty cycle
