Lesson 1How Hydraulic Pumps Work (Gear, Vane, Piston Types)Introduces gear, vane, and piston pumps, explaining their basic operations, efficiency levels, control of displacement, and common ways they fail, plus tips on spotting wear signs and scheduling upkeep to prevent breakdowns.
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 Sizes, and Where to Put ThemExplains types of hydraulic filters, their micron ratings, and beta ratios, and shows how to pick and place filters in suction, pressure, and return lines to manage dirt and safeguard pumps, valves, and moving parts.
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, covering their inside workings, symbols, and usual wear patterns, and explains how valve state affects movement control, energy use, and overall system steadiness.
Spool and poppet directional valvesRelief, reducing, and sequence valvesFlow control and throttle valvesValve symbols and port functionsErosion, sticking, and leakage wearLesson 4Support Parts: Pressure Gauges, Coolers, Accumulators, and ValvesCovers support hydraulic parts like gauges, coolers, accumulators, and check valves, explaining their roles, basic sizing, and how they help safe running, fault finding, and better energy use in systems.
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 WaysReviews hoses, fittings, and hard pipes in hydraulic setups, focusing on material picks, pressure limits, proper routing, and common failures that affect safety, leaks, and how often to service them.
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 of reservoirs, inside setup, and choosing breathers, along with managing oil levels, stopping dirt entry, and handling 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 SystemsCompares open-loop and closed-loop hydraulic systems, explaining circuit designs, control ways, efficiency, and common uses, stressing how each setup impacts fixing problems and upkeep jobs.
Basic open-loop circuit layoutBasic closed-loop circuit layoutEnergy efficiency and heat generationControl accuracy and responseMaintenance and failure tendenciesLesson 8Usual Running Settings: Pressure Ranges, Temperatures, and Flow Rates for Factory Presses (Reference Numbers and Sources)Defines usual pressure, temperature, and flow ranges for factory hydraulic presses, explains reading data sheets, and shows using standard references to check safe and good 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 NeedsDescribes 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
