Lesson 1How Hydraulic Pumps Work and Operate (Gear, Vane, Piston Types)Introduces gear, vane, and piston pumps, explaining their working principles, efficiency levels, displacement control methods, and common failure patterns, including 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 Placement in SystemsExplains types of hydraulic filters, their micron ratings, and beta ratios, and demonstrates selecting and positioning 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 Typical Wear SignsDetails directional, pressure, and flow control valves, including internal workings, symbols, and common wear patterns, and shows how valve condition influences motion control, energy consumption, 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 ValvesCovers supporting hydraulic parts like gauges, coolers, accumulators, and check valves, explaining their roles, basic sizing, and contributions to safe operations, diagnostics, and energy savings in industrial use.
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 TypesReviews hoses, fittings, and solid piping in hydraulic systems, focusing on material options, pressure classes, installation practices, and frequent failure modes affecting safety, leaks, and maintenance timing.
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 Handling PracticesCovers sizing and layout of reservoirs, choosing breathers, along with managing oil levels, preventing dirt entry, and controlling heat to prolong fluid life and shield delicate 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 setups, explaining circuit designs, control responses, efficiency, and common uses, highlighting how each setup influences fault-finding and upkeep tasks.
Basic open-loop circuit layoutBasic closed-loop circuit layoutEnergy efficiency and heat generationControl accuracy and responseMaintenance and failure tendenciesLesson 8Standard Operating Conditions: Pressure Levels, Temperatures, and Flow Rates for Industrial Presses (Reference Figures and Sources)Defines usual pressure, temperature, and flow ranges for hydraulic presses in industry, shows how to read data sheets, and uses standard references to confirm safe and effective 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: Rods, Seals, Cushions, and Mounting OptionsDescribes hydraulic cylinders and actuators, emphasising rod construction, sealing arrangements, cushions, and mounting types, and how these affect load handling, motion precision, leak risks, and durability.
Cylinder types and basic constructionRod materials, coatings, and finishesSeal types, functions, and failure signsCushion design and adjustment methodsMounting styles and alignment issues
