Hydraulic

SASARAN

i

I. Dasar-Dasar Hidrolik 1

I.1 Penggunaan Cairan Dalam Sistem Hidrolik

1

I.2 Hukum Pascal 2

I.2.1 Formulasi Pascal

3

I.2.2 Keuntungan Mekanis 5

I.3 Orifice 6

I.3.1 Oil Flow ke Tangki di Blok 7

I.3.2 Type Dasar Circuit

8

II. Komponen-Komponen Hydraulic

10

II.1 Tangki Hidrolik

10

II.1.1 Komponen Oil Tank 10

II.1.2 Jenis Hydraulic Tank 11

II.1.3 ISO Simbol 13

II.1.4 Fungsi dari Hydraulic Fluid (Oil) 13

II.1.5 Viscosity (Kekentalan)

15

II.1.6 Viscosity Index 16

II.1.7 Petroleum Oil 16

II.1.8 Fluida Tahan Api

16

1.

II.1.9 Oil Life 17

II.2 Hydraulic Pump

18

II.2.1 Positive Displacement Pump

19

II.2.1.1 Gear Pump

20

A. Gear Pump Flow 21

B. Gear Pump Force 21

C. Pressure Balance Plate 22

D. Gear Pump with Pocket 23

II.2.1.2 Vane Pumps 24

A. Vanes 25

B. Flex Plates 25

C. Vane Pump Operation 26

D. Balanced Vane Pump 27

E. Variable Vane Pump

28

II.2.1.3 Piston Pumps 28

A. Straight Housing Axial Piston Pump 29

B. Radial Piston Pump

31

II. 2.2 Non-Positive Displacement Pump

34

II.2.2.1 Centrifugal Impeller Pump 34

II.3 VALVE 35

II.3.1 Pressure Control Valve

35

II.3.1.1 Relief Valve

36

A. Simple Relief Valve

36

2.

B. Pilot operated Relief valve, CLOSE Position

37

II.3.1.2 Sequence Valve 41

II.3.1.3 Pressure Reducing Valve

43

II.3.1.4 Pressure Differential Valve 45

II.3.2 Directional Control Valve 48

II.3.2.1 Spool Valve 48

II.3.2.2 Rotary Valve 54

II.3.2.3 Check Valve

55

II.3.2.4 Pilot Operated Check Valve 56

II.3.2.5 Make-up Valve 59

II.3.2.6 Solenoid Actuated Control Control Valve

60

A. Air gap Solenoid 60

B. Wet Armature Solenoid 61

III. I S O SYMBOL 67

III.1 Introduction 68

III.1.1. Pandangan Umum 68

III.1.2. Ruang Lingkup dan Tujuan

69

III.2. Aturan-aturan Symbol 69

III.3 Konduktor, Fluid 72

III.4 Penyimpan Energi dan Penyimpan Fluida

74

III.5 Fluid Conditioner 75

III.6 Cylinder

76

III.7 Controls

77

3.

IV. Load Sensing/ Pressure Compensated

78

IV.1 Basic System (Open Center)

79

IV.1.1 Relief Valve 79

IV.2 Pressure Compensation (Close Center System)

82

IV.3 Load Sensing (Close Center System) 86

4.