Lesson 1How Hydraulic Pumps Work and Operate (Gear, Vane, Piston Types)This lesson introduces gear, vane, and piston pumps, explaining their working principles, efficiency levels, displacement control, and common failure patterns, plus tips on spotting wear signs and scheduling preventive upkeep.
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 ThemThis explains types of hydraulic filters, micron ratings, and beta ratios, and demonstrates how to pick and place filters in suction, pressure, and return lines to manage contamination and safeguard 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 SignsThis details directional, pressure, and flow control valves, including internal workings, symbols, and typical wear patterns, and shows how valve condition influences motion control, energy use, and overall 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 ValvesThis covers supporting hydraulic parts like gauges, coolers, accumulators, and check valves, explaining their roles, basic sizing, and how they support safe running, diagnostics, and energy savings.
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 TypesThis reviews hoses, fittings, and solid piping in hydraulic setups, focusing on material options, pressure limits, proper routing, and common failures 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 HandlingThis discusses reservoir sizing, inside layout, and breather choices, plus oil level management, contamination control, and heat handling methods that prolong fluid life and protect key 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 SystemsThis compares open-loop and closed-loop hydraulic systems, explaining circuit designs, control responses, efficiency, and common uses, stressing how each setup affects fault-finding and upkeep tasks.
Basic open-loop circuit layoutBasic closed-loop circuit layoutEnergy efficiency and heat generationControl accuracy and responseMaintenance and failure tendenciesLesson 8Typical Running Specs: Pressure Ranges, Temperatures, and Flow Rates for Industrial Presses (Reference Values and Sources)This defines usual pressure, temperature, and flow limits for industrial hydraulic presses, explains reading data sheets, and shows using standards to confirm safe, effective running 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: Rods, Seals, Cushions, and Mounting FactorsThis describes hydraulic cylinders and actuators, focusing on rod design, sealing setups, cushions, and mounting types, and explains how these affect load handling, motion control, leak risks, and lifespan.
Cylinder types and basic constructionRod materials, coatings, and finishesSeal types, functions, and failure signsCushion design and adjustment methodsMounting styles and alignment issues
