Lesson 1How Hydraulic Pumps Work (Gear, Vane, Piston Types)Introduces gear, vane, and piston pumps, explaining their working principles, efficiency levels, displacement control, and common failure types, 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: Kinds, Micron Ratings, and PlacementExplains types of hydraulic filters, 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 Common Wear SignsDetails directional, pressure, and flow control valves, including internal workings, symbols, and typical wear patterns, and shows how valve condition influences motion control, energy consumption, and system steadiness.
Spool and poppet directional valvesRelief, reducing, and sequence valvesFlow control and throttle valvesValve symbols and port functionsErosion, sticking, and leakage wearLesson 4Support Components: Pressure Gauges, Coolers, Accumulators, and ValvesCovers support hydraulic parts like gauges, coolers, accumulators, and check valves, explaining their roles, basic sizing, and contributions to safe running, fault-finding, 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 TypesReviews hoses, fittings, and solid piping in hydraulic setups, emphasising material options, pressure limits, routing methods, and frequent failure types affecting 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 HandlingCovers sizing reservoirs, internal arrangements, and choosing breathers, plus managing oil levels, preventing dirt entry, and handling 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 systems, explaining circuit designs, control responses, efficiency, and common uses, stressing how each setup affects fault-finding and upkeep duties.
Basic open-loop circuit layoutBasic closed-loop circuit layoutEnergy efficiency and heat generationControl accuracy and responseMaintenance and failure tendenciesLesson 8Typical Operating Specs: Pressure Ranges, Temperatures, and Flow Rates for Industrial Presses (Reference Values and Sources)Defines usual pressure, temperature, and flow ranges for industrial hydraulic presses, explains reading data sheets, and shows using reference standards to confirm safe, 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 FactorsDescribes hydraulic cylinders and actuators, focusing on rod designs, 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
