Lesson 1How Hydraulic Pumps Work and Operate (Gear, Vane, Piston Types)Introduces gear, vane, and piston pumps, explaining their working principles, efficiency, displacement control, and common failure modes, with tips on spotting wear signs and planning preventive maintenance.
External and internal gear pumpsVane pump operation and featuresAxial and radial piston pumpsFixed versus variable displacementCommon pump wear and noise signsLesson 2Hydraulic Filters: Types, Micron Ratings, and Where to Install ThemExplains types of hydraulic filters, micron ratings, and beta ratios, and shows how to choose and place filters in suction, pressure, and return lines to control dirt and protect pumps, valves, and actuators.
Suction, pressure, and return filtersMicron rating and beta ratio basicsFilter media types and dirt holdingChoosing filter locations in circuitsMonitoring clogging and changeoutLesson 3Directional, Pressure, and Flow Control Valves: How They Work and Common Wear PatternsDetails directional, pressure, and flow control valves, covering their internal workings, symbols, and typical wear patterns, and explains how valve condition affects motion control, energy use, and system stability.
Spool and poppet directional valvesRelief, reducing, and sequence valvesFlow control and throttle valvesValve symbols and port functionsErosion, sticking, and leakage wearLesson 4Supporting Components: Pressure Gauges, Coolers, Accumulators, and ValvesCovers supporting hydraulic components like gauges, coolers, accumulators, and check valves, explaining their functions, sizing basics, and how they help in safe operation, diagnostics, and energy saving.
Pressure and temperature gaugesAir and water oil coolersBladder and piston accumulatorsCheck and counterbalance valvesSafety devices and relief pathsLesson 5Hoses, Fittings, and Piping: Materials, Pressure Ratings, and Failure ModesReviews hoses, fittings, and rigid piping in hydraulic systems, focusing on material choices, pressure ratings, routing practices, and common failure modes that affect safety, leaks, and service times.
Hose constructions and standardsFitting types and sealing methodsPipe and tube materials and ratingsRouting, clamping, and bend radiusBurst, abrasion, and fatigue failuresLesson 6Reservoir Design, Breathers, and Oil ManagementCovers reservoir sizing, internal layout, and breather selection, along with oil level control, dirt prevention, and heat management practices that prolong fluid life and protect sensitive hydraulic parts.
Reservoir sizing and dwell timeInternal baffles and return arrangementsBreather types and filtration levelsOil level monitoring and alarmsMoisture and air ingress controlLesson 7Overview of Closed-Loop and Open-Loop Hydraulic SystemsCompares open-loop and closed-loop hydraulic systems, explaining circuit layouts, control behaviour, efficiency, and typical uses, with focus on how each setup affects troubleshooting and maintenance tasks.
Basic open-loop circuit layoutBasic closed-loop circuit layoutEnergy efficiency and heat generationControl accuracy and responseMaintenance and failure tendenciesLesson 8Typical Operating Conditions: Pressure Ranges, Temperatures, and Flow Rates for Industrial Presses (Reference Values and Sources)Defines typical pressure, temperature, and flow ranges for industrial hydraulic presses, explains how to read data sheets, and shows how to use reference standards to confirm safe, efficient operating conditions.
Typical system and peak pressure rangesNormal and extreme oil temperature limitsCommon pump and actuator flow rangesReading OEM and ISO data sheetsUsing safety factors in sizingLesson 9Cylinders and Actuators: Rod, Seals, Cushions, and Mounting ConsiderationsDescribes hydraulic cylinders and actuators, focusing on rod design, sealing systems, cushions, and mounting styles, and explains how these features influence load capacity, motion control, leak risk, and service life.
Cylinder types and basic constructionRod materials, coatings, and finishesSeal types, functions, and failure signsCushion design and adjustment methodsMounting styles and alignment issues
