Category Archives: yuken hydraulic training

Yuken Hydraulic Products


Yuken hydraulic power pack :

Hydraulic power pack :

Some power packs are large, stationary units and others are more portable. They have a hydraulic reservoir, which houses the fluid, regulators that allow users to control the amount of pressure the power pack delivers to a valve, pressure supply lines and relief lines, a pump and a motor to power the pump.A hydraulic power network is a system of interconnected pipes carrying pressurized liquid used to transmit mechanical power from a power source, like a pump, to hydraulic equipment like lifts or motors. The system is analogous to an electrical grid transmitting power from a generating station to end-users.

Hydraulic Power Unit Design and Operation. A hydraulic system employs enclosed fluid to transfer energy from one source to another, and subsequently create rotary motion, linear motion, or force. Hydraulic power units apply the pressure that drives motors, cylinders, and other complementary parts of a hydraulic system.

Uses of power pack :

A power pack or power pack is a part of a modular power train that contains some type of engine (most frequently an internal combustion engine but other types, including electric motors, are possible) and may also contain a transmission and various supporting components.

Power pack units :

Hydraulic Power Units are based on Pascal’s law of physics, drawing their power from ratios of area and pressure. Hydraulic Power Units are used in a wide range of applications, including: Machine Tools. Automation.

Work of hydraulic power pack :

The basic rule of using hydraulic power is Pascal’s Principle. Pascal’s Principle: pressure exerted on a fluid is distributed equally throughout the fluid. Hydraulics uses incomprehensible liquids so the applied pressure from one end (small arrow) is equal to the desired pressure on the other end (big arrow).

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Yuken shaft

Shaft description :

A shaft is a rotating machine element, usually circular in cross section, which used to transmit power from one part to another, or from a machine which produces power to a machine which absorbs power. The various members such as pulleys and gears are mounted on it.

A shaft used for :

A drive shaft, driveshaft, driving shaft, propeller shaft (prop shaft), or Cardan shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance or the need to allow for relative movement between them.

There are two types of shaft: 

1.Transmission Shaft : 

Counter Shaft. The counter shaft lies parallel to the main shaft and is driven by the input shaft through a pinion gear. Output Shaft. The final component that carries the power out of the transmission gearbox and on to the wheels is the output shaft.

2.Machine Shaft :

 shaft is a rotating machine element, usually circular in cross section, which is used to transmit power from one part to another, or from a machine which produces power to a machine which absorbs power. The various members such as pulleys and gears are mounted on it.

Yuken hydraulic accessories:

Suction Strainer:

Pressure Gauge : 

Temperature Gauge :

Gauge Isolator :

Air Blast Type Oil Cooler :

 General Information This valve is designed to use when a pump starts to bleed off the air which is enclosed in a suction line or another lines in the system.
When this valve is used to bleed off the air for pump start, connect inlet port of the valve adjacent as much as possible to the discharge port of the pump. For the purpose of removing the air in the line, install the air bleed valve at the highest point in the overall circuit. In either case, outlet port of the valve must be connected to the tank line and it should be extended under the oil level in the reservoir.

Hydraulic Fluids Type of Hydraulic Fluids Petroleum Base Oil :
Use R&O (Rust and Oxidation inhibitor) type oils or anti-ware type oils (equivalent to ISO VG-32 & 46). 

Synthetic Fluids:
Use Phosphate ester type fluids or polyol ester type fluids. Water Containing Fluids :
Use water glycol type fluids or water in oil emulsion type fluids. 
Other Special Fluids
Consult factory for information. “F5” Series Pipe Flange Kits This flange mounting surface measurements is based upon SAE 4 Bolt Spring Flange (Standard Pressure Series). 

Specifications Max:
 Operating Pressure Maximum operating pressure varies with the type of pipe connection or flange size. Refer to the applicable installation drawing.

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Pressure switch

Semiconductor pressure switch :

Anyone can easily set the pressure switches.Real time pressure indication the actual pressure is always displayed. It can be easily operated by the pressure switches. High visibility Pressure values can easily be seen even from distant and dark place. Actual pressures setting method can be set by the pressure switches without conscious of notion of a differential pressure. Wide setting range of differential pressure can be adjusted to a large extent. Relay contact output can hook up terminals and the pressure switches in a similar way of wiring mechanical pressure switches.Wiring with a connector is one output type pressure switches have adopted a connector wiring method.

Two types of the pressure setting method is either an external setting method or an internal setting method. Two types of the housing A pressure port location can be selected from the two types, bottom and back.


The PZA series are renewal analog type semiconductor switches that inherit the greatest benefit of their predecessors, the PZ series, which was proven from assured actual characteristics of compact and high performance. The PZA series have realized much high accuracy, simplicity and lower cost.

Simplicity you can hook up terminals of the pressure switches in a similar way of wiring mechanical pressure switches. A relay output type has been added in addition to the conventional transistor output type, the relay output type has come into the family. High cost performance.

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Yuken : Vane Pump

Vane Pump :

Vane pumps are available in a number of vane configurations including sliding vane (left), flexible vane, swinging vane, rolling vane, and external vane. Vane pumps are noted for their dry priming, ease of maintenance, and good suction characteristics over the life of the pump. Moreover, vanes can usually handle fluid temperatures from -32°C / -25°F to 260°C / 500°F and differential pressures to 15 BAR / 200 PSI (higher for hydraulic vane pumps). Each type of vane pump offers unique advantages. For example, external vane pumps can handle large solids.Flexible vane pumps, on the other hand, can only handle small solids but create good vacuum. Sliding vane pumps can run dry for short periods of time and handle small amounts of vapor.

How Vane Pumps Work :

Despite the different configurations, most vane pumps operate under the same general principle described below.

1. A slotted rotor is eccentrically supported in a cycloidal cam. The rotor is located close to the wall of the cam so a crescent-shaped cavity is formed. The rotor is sealed into the cam by two sideplates. Vanes or blades fit within the slots of the impeller. As the rotor rotates (yellow arrow) and fluid enters the pump, centrifugal force, hydraulic pressure, and/or pushrods push the vanes to the walls of the housing. The tight seal among the vanes, rotor, cam, and sideplate is the key to the good suction characteristics common to the vane pumping principle.

2. The housing and cam force fluid into the pumping chamber through holes in the cam (small red arrow on the bottom of the pump). Fluid enters the pockets created by the vanes, rotor, cam, and sideplate.

3. As the rotor continues around, the vanes sweep the fluid to the opposite side of the crescent where it is squeezed through discharge holes of the cam as the vane approaches the point of the crescent (small red arrow on the side of the pump). Fluid then exits the discharge port.A Aerosol and Propellants


Yuken – Jsd Engineering

A Complete solution in hydraulics

A Complete solution in hydraulics

call 9818079220

Yuken : Pressure relief valve

Pressure relief valve :

Dear friends today we are going to discuss about pressure relief valve :

Pressure relief valve : The purpose of a pressure relief valve is to control or limit surges of pressure within pipelines, acting as protection for the system, and defending against instrument or equipment failure. They are usually present in clean water industries. MGA Controls are experts in the specification and supply of Pressure Relief Valves for a wide range of industries and applications. Read on to find out more about the purpose of a pressure relief valve and pressure relief valve features.

The main purpose of a pressure relief valve is to protect life, environment and property. A pressure relief valve is a safety device, in numerous instances, the final safeguarding measure. It is important that the valve is maintained and operating at all times and under all circumstances.Pressure relief valve operation depends on the Singer pilot sensing upstream pressure through a connection to the valve inlet. The valve and pilot remain closed until the inlet pressure exceeds the pilot setting. The valve opens rapidly to relieve damaging overpressure and closes smoothly at an adjustable speed when the pressure returns below the set-point.

There are many kinds of pressure relief valves, however, spring-loaded relief valves are one of the most prevalent.Singer Dynamic Lifter is a direct-acting spring-loaded relief valve that opens when the inlet pressure exceeds the set-point and closes drip-tight when pressure falls below the set-point. A compact sewage relief valve that is suitable for high pressures up to 200psi, responds very quickly, and is compact enough to fit into the most stringent space requirements.

The pressure relief valve features are mentioned below :
-Low maintenance
-Hygienic and minimal time to flush and test operations
-Eliminates surges and prolongs pipe life
-Handles higher pressure applications effectively
-Closes drip-tight
-Premium materials reduce maintenance, providing the lowest long-term cost of ownership
-Adjustable closing speed
-Utilises compress air or plant air

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Some of the regular used model available  in ex-stock





The Cartridge Piston Pump is a fixed displacement. It is designed to be installed into a customer’s cavity, and driven by a customer supplied (and mounted) electric motor. This cartridge pump is also capable of operating with a variety of non-abrasive, non water-based fluids. There are three pump standard pump displacements available for the Cartridge Piston Pumps.

The Cartridge Piston Pumps have no threaded ports but instead, rely on the correct interface of the customer’s. A 10 micron suction line filter is recommended to protect the cartridge piston pump and the system. Both the Miniature Piston Pumps and Cartridge Piston Pumps can operate with a variety of non-abrasive, non water based fluids,  Commonly used fluids include Automotive Transmission Fluid, hydraulic oils, DOT3 brake fluid If users wish to use alternative oil, hydraulic fluid, ATF, or other they are warned to check that they have the same properties as those recommended.

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Some of Yuken regular piston pump available ex stock :

AR 16-FR-01-C-22

AR 16-FR-01-B-22


A 22-FR-01C20

AR 22-FR-01C-22

AR 22-FR-01B22 





A 56-F-R-04-H-K-32

 SA 56-F-R-01-H-K-32  


Happy Republic Day 

Happy Republic Day 

Republic Day honors the date on which the Constitution of India came into effect on 26 January 1950 replacing the Government of India Act (1935) as the governing document of India.

The Constitution was adopted by the Indian Constituent Assembly on 26 November 1949, and came into effect on 26 January 1950 with a democratic government system, completing the country’s transition towards becoming an independent republic. 26 January was chosen as the Republic day because it was on this day in 1930 when Declaration of Indian Independence (Purna Swaraj) was proclaimed by the Indian National Congress as opposed to the Dominion status offered by British Regime.

Wishing you all a very Happy Republic Day. 

Jai Hind!!