1. 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.
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2. 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
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3. BASIC VOCATIONAL HYDRAULIC
The hydraulic component has symbol and Its not more different than pneumatic component. The main component of Hydralic system is :
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4. 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 :
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5. 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
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6. 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
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7. 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 .
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8. 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
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9. 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
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10. 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
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11. 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.
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12. 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
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13. 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
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14. BASIC VOCATIONAL HYDRAULIC SCHEMA MAINTENANCE actuator
Signal processing
signal
(Power Pack)
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15. 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
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16. BASIC VOCATIONAL
HYDRAULIC VALVE
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17. 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
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18. 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
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19. 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
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20. BASIC VOCATIONAL HYDROLIC Filter
Its has function to filtering contamination from hydraulic system
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21. 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
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22. BASIC VOCATIONAL HYDROLIC Return line filter
This component are installed on fedback port for filtering dirt to keep its not entering to the tank.
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23. 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 .
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24. BASIC VOCATIONAL HYDROLIC
Based on construction design, valve is classified to :
Poppet Valves
Ball Seat Valves
Cone Popet Valves
Disc Seat Valves
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25. 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
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26. 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
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27. 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.
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28. 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
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29. 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
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30. BASIC VOCATIONAL HYDROLIC Hydraulic oils
Based on DIN dan hydraulic oil classified three type :
Hydraulic oil HL
Hydraulic oil HLP
Hydraulic oil HV
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31. 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
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32. 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
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33. 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
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