Lesson 1How Hydraulic Pumps Work (Gear, Vane, Piston Types)This lesson introduce gear, vane, and piston pumps, explaining how dem work, their efficiency, how to control displacement, and common ways dem fail, plus how to spot wear signs and plan 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: Kinds, Micron Ratings, and Where to Put DemThis explain different types of hydraulic filters, micron ratings, and beta ratios, and show 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 Dem Work and Common WearThis detail directional, pressure, and flow control valves, covering how dem work inside, symbols, and usual wear patterns, and explain how valve condition affect 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 4Extra Parts: Pressure Gauges, Coolers, Accumulators, and ValvesThis cover extra hydraulic parts like gauges, coolers, accumulators, and check valves, explaining their jobs, basic sizing, and how dem help 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 Pipes: Materials, Pressure Levels, and Failure WaysThis review hoses, fittings, and hard pipes in hydraulic systems, focusing on material choices, pressure ratings, how to route dem, 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 cover how to size reservoirs, inside layout, and choosing breathers, plus controlling oil level, stopping dirt, and managing heat to make fluid last longer and protect 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 SystemsThis compare open-loop and closed-loop hydraulic systems, explaining circuit setups, control ways, efficiency, and usual uses, with stress on how each type affect fixing problems and maintenance.
Basic open-loop circuit layoutBasic closed-loop circuit layoutEnergy efficiency and heat generationControl accuracy and responseMaintenance and failure tendenciesLesson 8Usual Operating Levels: Pressure Ranges, Temperatures, and Flow Rates for Factory Presses (Reference Values and Sources)This define usual pressure, temperature, and flow ranges for factory hydraulic presses, explain how to read data sheets, and show how to use standard references to check safe and good 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 ThingsThis describe hydraulic cylinders and actuators, focusing on rod design, sealing systems, cushions, and mounting types, and explain how these affect 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
