Use of Hydraulic Equip. (G-11)

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USE OF ENERPAC HYDRAULIC EQUIPMENT

PRESENTED BY: HARDISH TRIVEDI

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Pressure applied at any point upon a confined liquid, is transmitted equally in all the directions & acts perpendicular to the surfaces with equal force.

PASCAL’S LAW


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WORKING PRINCIPLE OF HYDRAULICS


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SINGLE ACTING CYLINDER


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SINGLE ACTING SPRING RETURN CYLINDER

Advance Port


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DOUBLE ACTING PUSH AND PULL TYPE SOLID CYLINDER


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DOUBLE ACTING PUSH AND PULL TYPE HOLLOW CYLINDERS


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TYPES OF PUMPS

• Hand pumps.• Electric Pumps.• Air-Driven pumps.• Battery and gas

powered pumps.


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- Max. Operating Pressure = 10,000 psi(700 Kg/Cm2)- Length availability = 2 to 50 ft.( 0.6m to 15m)- Inside diameter = 0.25” to 0.38”(6mm to 9.5mm)- End connections = 1/4” NPT

= 3/8” NPTNote : When using greater hose lengths, it is sometimes

necessary to fill the pump reservoir after filling the hoses.

HIGH PRESSURE HYDRAULIC HOSES


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1/4” COUPLER - For use with small cylinders and hand pumps.- Includes female dust caps.

3/8” High Flow couplers- Standard accessory on most of Enerpac Cylinders- Includes “2-in-1” dust cap for use on male female coupler halves.

HYDRAULIC COUPLERS


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- Hydraulic Cylinder : Applies Hydraulic Force.- Cylinder Base Plate : For application like lifting

where additional cylinder stability is required.

- Pump : Develops hydraulic pressure.- Hose : Transport hydraulic fluid.- Male Coupler : For quick connection of the

hose to system components.- Female Coupler : For quick connection of the

hose end to the system components.

- Gauge : To monitor pressure of the hydraulic circuit.

BASIC SYSTEM SET-UP


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SIMPLE HYDRAULIC CIRCUIT FOR SINGLE ACTING CYLINDER


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SIMPLE HYDRAULIC CIRCUIT FOR DOUBLE ACTING CYLINDER


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ADVANCE - HOLD - RETRACT.Single Acting Double Acting


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T

B


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PULL CYLINDERS.


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PULL CYLINDER - APPLICATION


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Cylinders : Capacity/ Stroke Price

1. RC- 1006 100 MT/ 6” Rs. 45,000/-2. RCS-502 50 MT/ 2” Rs. 25,000/-3. RCS-1002 100 MT/ 2” Rs. 35,000/-4. CLR-2006 200 MT/ 6” Rs.1,10,000/-

Pumps :1 Hand Pump P-464 Rs. 45,000/-2 Motorized Pump PER-3410E Rs.1,60,000/-

LIST OF HIGH PRESSURE HYDRAULIC EQUIPMENT COMMONLY USED AT

L&T HAZIRA WORKS

RC-1006RCS-502RCS-1002CLR-2006

Hand PumpMotorized

pump PRESENTED BY: HARDISH TRIVEDI

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• Total force required in Tons.

• No. of cylinders required.

• Force per cylinder in Tons.

• Stroke required.

• Single / Double acting

• Type of plunger required.

• Collapsed height required.

• Cylinder attachments.

How to Select Hydraulic Cylinder?


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• Single or double acting operation.

• 2 way valve for single acting application.

• 4 way valve for double acting application.

How to Select Pumps?A. Hand Pump


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• Duty cycle.• Required usable oil

capacity.• Available voltage• Lifting Speed.• Type of Control• Type of Actuation

/Function.

How to Select Pumps?A. Electric Pump


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• No. of Hoses & Length required.

• Manifold or Tee• Extra hose per Manifold.• Gauges ( PSI )• Fittings, Pressure relief

valve & Load holding valves.• Hydraulic Oil (Servo-68)

How to Select System Components?


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MULTILIFTING APPLICATION THROUGH COMMON MANIFOLD


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The amount of force a

hydraulic cylinder can

generate is equal to the

hydraulic pressure times

the effective area of the

cylinder

FORCE


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Pressure :1 PSI = 0.069 Bar1 Bar = 14.50 PSI1 kPa = 0.145 PSI

Volume :1 In3 = 16.387 cm31 Cm3 = 0.061 in31 Liter = 61.02 in31 Liter = 0.264 gal

MEASUREMENTS


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Weight :

1 Pound = 0.4536 Kgs.

1 Kg = 2.205 lbs...

1 Metric Ton = 2,205 lbs...

1 Ton = 2,000 lbs...

1 Ton MT = 1000 Kgs.

MEASUREMENTS


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Example 1. An RCS-502 Cylinder with 9.63 in2 effective area operating at 8000 psi. will generate what force?

Force = Pressure x Effective Area. = 8000 x 9.63

= 77040 lbs. (35 ton)Example 2. An RCS-1002 Cylinder lifting 14000 lbs. load with effective area of 19.67 in2, what is the operating pressure require?

Force = Pressure x Effective Area. 14000 = Pressure x 19.67

Pressure = 711.75 psi. (50 kg/cm2)

CALCULATIONS OF ACTUAL LOAD


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WEIGHT MEASUREMENT BY

HYDRAULIC JACKS


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OFFSET CORRECTION


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Dos & Don’ts


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Dos & Don’ts


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Dos & Don’ts


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Dos & Don’ts


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Dos & Don’ts


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Dos & Don’ts


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Dos & Don’ts


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Dos & Don’ts


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• Couplers should be pressurized only when completely connected.

• Always keep Plastic dust caps on coupler head.

HIGH PRESSURE HYDRAULIC COUPLERS


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• Thread Sealer : To seal NPT threads use Teflon paste.

• When using: TeflonTape, apply the tape one thread from the end of fitting to prevent it from winding up in the hydraulic system.

HIGH PRESSURE HYDRAULIC COUPLERS


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• Do not exceed maximum pressure of 10,000 psi.

• Do not handle hoses which are under pressure.

• When using longer hose length, it is sometimes necessary to fill the pump reservoir after filling the hoses.

HIGH PRESSURE HYDRAULIC HOSES


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IMPROPER STORAGE (JACK)


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IMPROPER STORAGE (PUMP)


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LACK OF MAINTENANCE


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LACK OF MAINTENANCE


60PRESENTED BY: HARDISH TRIVEDI

Use of Hydraulic Equip. (G-11)

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