Aakash Hydraulics

N-SERIES PRESS

N-series range of Hydro-Pneumatic Presses, combines the advantages of efficient, low cost pneumatics, to achieve the large output forces associated with hydraulics. The system operates on normal compressed air pressure of 5 bar, using standard pneumatic controls, thus completely eliminating the use of expensive hydraulic power pack and associated control equipment.

The system consists of a hydraulic cylinder, an air to oil intensifier and an oil reservoir, all combined into a compact integral unit. The output ram approaches the work piece at rapid speed (which can be adjusted) under low pressure (hence low force) compressed air. On touching the work piece (at any point along the travel) the intensifier is automatically energized by means of a suitable directional control valve. This results in a high pressure (hence high force) stroke up to a maximum of 24 mm. The ram retracts rapidly at low pressure on completion of the work cycle.

FEATURES :

Very low air consumption, resulting in energy saving of up to 80% over equivalent pneumatic cylinders and 50 % over equivalent hydraulic systems

The Speed of Operation is also much higher than an equivalent standard pneumatic or hydraulic system.

Rapid pneumatically operated approach stroke and return stroke. In the "N" Series the return force is larger than the approach force, resulting in the loading of heavier tools for respective tonnages.

Absolute separation of air and oil chambers. This has been achieved by providing bleed holes between the pneumatic and hydraulic seals. In the event of failure of pneumatic seals, the air escapes to atmosphere through a bleed hole and does not mix with the hydraulic oil. If the hydraulic seals fail, oil escapes from its bleed hole, indicating deterioration of the seal, which can be procured and replaced well before total breakdown occurs.

ADVANTAGES :

Uses Compressed air as the power source resulting in reliable, inexpensive components and piping. Completely eliminates the use of expensive hydraulic components and a large oil tank to be filled with a large quantity of expensive hydraulic oil.

Fast response because of the use of compressed air for rapid approach and retraction.

Compact and light weight. Can be mounted on a table top. Further there is a saving in floor space occupied by a hydraulic power pack of a hydraulic system.

Saves up to 50 % in energy input over fully pneumatic and hydraulic systems and 70 % in cost compared to hydraulic systems.

APPLICATIONS :

Mercury low cost “ hydro-pneumatic  presses are an ideal replacement for expensive hydraulic presses for varied applications such as riveting, Forming, Clamping, Bending, Straightening, Marking, Punching etc. Low investment, Energy saving, negligible maintenance, fast action and infinite control over force and speed are the major advantages over equivalent hydraulic systems.

Technical Specifications :

available models :

the n series  hydro-pneumatic reciprocating pumps are an efficient, low cost alternative to motorised and hand operated pumps.

features :

compact and lightweight. Can be mounted in any orientation.

low air consumption. When used in conjuction with a low pressure high discharge centrifugal prefill pump, the energy consumption and time for building desired pressure is very low. Once pressure has built up there is no further consumption of compressed air.

automatically compensates for leakages to maintain set pressure.

can be used in explosive environments as all components are pneumatically actuated.

designed for use with water and other non corrosive liquids, as all wetted parts are made from stainless steel.

suction port can be rotated 360 degree for easy installation and non return valve assembly can be easily dismantled for quick servicing.

applications :

for pressure/ burst testing of castings, valves, hoses, pressure vessels etc.

cyclic pressure / life testing of pressure gauges, pressure switches, hoses etc.

burst strength testing of pressurised vessels such as lpg / nitrogen/ oxygen gas cylinders, storage tanks, hoses, pipes etc.

seat leakage test of control valves.

operation of single acting hydraulic cylinders used in lifting platforms, hydraulic clamps, compression moulding presses etc.

isostatic pressing of powder metals and ceramics.

precise filling of liquid products such as soft drinks, juices, medicines etc in packaging machines

transferring of liquids from barrels, storage tank etc

pumping oil or grease in centralized lubrication systems.

portable systems for construction, mining & defence equipments.      

The series " CH "  Model : 80-50(12) ,Double Acting, Hollow Through Rod Pneumatic Cylinders have been developed for sealing small neck diameter containers (Upto 35 mm dia.). The piston rod has a through hole with replaceable bearing bushes to accommodate different sizes of stretch pin.

Salient features of the Cylinders are :

Light weight, aluminium alloy barrel, end covers and piston The barrel is precision honed..

Bronze filled Teflon wear strip on the piston and Gun Metal bearing brushes in the end covers, to accommodate eccentric loads on the shaft.

Special profile " U " Cup Seals for low friction and bubble tight sealing.

Mountings as per ISO 6431 Standards or as per customer specifications.

Model : CH 125-60HP(16) is also available for sealing higher neck dia for jar.