BASIC VOCATIONAL HYDRAULIC Hydraulic liquid that use on Hydraulic system must be has characteristic that according it, so the Hydraulic liquid can do work well. Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC The fuction of hydraulic liquid on hydraulic sistem For continous power and preasure For lubricant of moving part . For cooling of friction part. For Avoid rust. For drifting chip of. For forward of signal Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC The hydraulic component has symbol and Its not more different than pneumatic component. The main component of Hydralic system is : Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Hydraulic Pump A component has function to suck hydraulic oil fluid that will be circulated on hydraulic system. Hydraulic system is closed cycle, because is the oil fluid be stored in oil tank. Types of hydraulic pump is : Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Gear Pump This pump consist of two couple of gear. Spin of gears that contrary, its cause vaccum on intake, so oil will be suck on pump, then it will be compress to outside with preasure. Hydraulic pump preasure to reach 100 bar Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Fin Pump This pump consist of flexiblity fins. If volume on pump is bigger so its will be decrease of preasure, hydraulic oil will suck then pass to compress room. The preasure of oil will distribute to hydraulic system Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Axial Piston Pump This hydraulic pump will suck oil through out piston that move by rotation shaft. Spin from pump shaft changed to translation piston move, then compress and suck stroke happen in turns, so hydraulic oil flows with continous . Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Radial Piston Pump This Pump consist of pistons that instal radialy, if rotos spin by eksentric, so pistons on stator will suck and compress in turn, its produce oil / fluid flows continous Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Screw Pump This pump has two engage rotor that concave and convex shape, so its can move oil fluid by axialy to other side. A both of rotor is identical like a couple of helix gear Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Hydraulic Actuator Like on pneumatic system, hydraulic actuator can be hydraulic cylinder, or hydraulic motor. Hydrolik cylinder move translationaly but hydraulic motor with rotation. The power of hydraulic actuator can reach 400 bar or 4x107 Pa Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Double Acting Cylinder This cylinder will move forward and backward, its cause by oil flow that to entering left and right side. Fluid preasure will pass through piston then its will be mechanic movement through connecting rod. Forward and backward movement use for multipurpose of production process. Its apply on heavy machine like boldozer, bego, etc. Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Rotation Actuator Gear Hydraulic Motor is an instrument to change fluid flow power to rotation move Hydraulic Motor has contrary principle with hydraulic gear. High preasure of hydraulic fluid flow will pass to turn of gear that stay in pump. Its will be change to rotation move for muliti purposes Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Hydraulic System consist of : Power Pack Division Signal Division Signal Processing Division Signal Controlling Division Power Pack Division consist of : Hydraulic Pump Preasure Regulator Valve Relief valve Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC SCHEMA MAINTENANCE actuator Signal processing signal (Power Pack) Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Preasure Regulator Valve Types of Preasure Regulator Valve Preasure Limits Valve, This valve complete by adjustable spring. Spring will open when extremely hydraulic preasure, it flows fluid to outside Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC VALVE Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Hydraulic Reservoir This component is a part of power pack unit that has various construction. There is a cylinder and box shape Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Function of Hydraulic Reservoir For store place of Hydraulic For separating water, air on Hydraulic fluid For reducing heat with spreading heat to around reservoir For placing power pack unit such as : pump, valve, etc Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDRAULIC Baffle Plate This component has function for separator new from circulation and hydraulic fluid that will suck by pump. Its has function to circulates a new fluid in coming for spread heat, and separate from water and air before recirculate to the pump Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Filter Its has function to filtering contamination from hydraulic system Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Types of Filter Suction filter, This component are installed in intake port or in tank Pressure line filter, This component are installed on preasure port and its has function to protecting importing components Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Return line filter This component are installed on fedback port for filtering dirt to keep its not entering to the tank. Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Control Element Regulation ways in Hydraulic system : Input Element that have direct energy from hydraulic pump, then Its will be passed to processing element Processing Element that processing of signal to final control element. Final Control Element will directing output by working element. Its finally result of hydraulic system . Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Based on construction design, valve is classified to : Poppet Valves Ball Seat Valves Cone Popet Valves Disc Seat Valves Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC 2. Slide Valves Longitudinal Slide Plate Slide (Rotary Slide Valves) Based on function, valve is classified : Directional Control Valves Non Return Valves Pressure Control Valves Flow Control Valves Shut-Off Valves Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC HYDRAULIC FLUID VISCOSITY Hydraulic liquid must have sufficient viscosity. If viscosity too low so oil film is not to maintain of friction, so if viscosity too thick, the power of pump will heavy to against of fluid viscosity force Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Index of Viscosity With a well viscosity index so hydraulic fluid will stabilities to use on system with fluctuative on work temperature. Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Flame Resistant Hydraulic system often operates in flammable place or close by fire, so It needs a Flame Resistant liquid. Foaming If hydraulic liquid have many foam so its cause many bubble. In the hydraulic liquid it make compressable and it will reduce power transfer. Foam possible to create hydraulic liquid be flammable Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Cold Resistant Hydraulic liquid must unfrozen if operates in cool temperature. its for reducing block by frozen Hydraulic liquid. Rust Resistant Hydraulic liquid must prevent for rust, so hydraulic construction have long life time Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Hydraulic oils Based on DIN 51524 dan 512525 hydraulic oil classified three type : Hydraulic oil HL Hydraulic oil HLP Hydraulic oil HV Teknologi dan Rekayasa MAINTENANCE

BASIC VOCATIONAL HYDROLIC Code example with letter for above have means : code : HLP 68 have means : H = hydraulic oil L = additive code for increasing oil life time `P = additive code for increasing load receive ablity 68 = oil viscosity grade Teknologi dan Rekayasa MAINTENANCE

No Pada Lembar Standar VDMA Percentage (%) kandungan Air BASIC VOCATIONAL HYDROLIC Table of types low flammability hydraulic liquid Code No Pada Lembar Standar VDMA Composes Percentage (%) kandungan Air HFA 24320 Oil-water emulsion 80-98 HFB 24317 Water-oil emulsion 40 HFC Hydrolis solusion, e.g : water glyco 35-55 HFD Anhydrolis liquid, e.g : phosphate ether 0-0.1 Teknologi dan Rekayasa MAINTENANCE

Table of comparation types hydraulic liquid BASIC VOCATIONAL HYDROLIC Table of comparation types hydraulic liquid Type of Fluid Petrol Oil Water Glycol Phosphor Ester Oil-in Water Oil Synthetic Free resistance P E G F Viscosity lemp. Properties F-G Seal compatibility Lubricating quality Temp. range (oC) above ideal 65 50 Relative cost comp. to oil 1 4 8 1.5 back Teknologi dan Rekayasa MAINTENANCE