New ranges of Pronal seamless inflatable lifting cushions are being introduced to Australia by Air Springs Supply incorporating the strength of Kevlar textile, the same super-tough fibre used in body armour, racing tyres and racing sails.
The Pronal CLT cushions are capable of handling up to 65 tons, can safely handle tricky lifts where there is limited space to work, capable of delicately raising loads ranging from heavy vehicles, pipelines and plant through to beams, bridge components, building components, machinery and resource development structures.
Pneumatic actuation, isolation and suspension specialists, Air Springs Supply are national distributors for the stock shape and custom-fabricated lifting cushions engineered by French elastomer specialists Pronal, manufacturers of tough lifting tanks used for plucking artifacts from the ocean liner Titanic nearly four kilometres down on the ocean floor.
Pronal’s latest range of cushions ranges from ultra-thin bags (just 20mm thick deflated) that can lift weights of up to 65 tonnes each to powerful spreading cushions that can exert hundreds of tonnes of force to part plant and machinery components for servicing, or to extract quarried materials. Complementary low-pressure CPB Maxi-Lift cushions can be used on land and under water, offering greater strokes of up to 700mm (or 1400mm where a pair are employed).
Air Springs Supply’s National Sales Manager, Simon Agar says that the Pronal CLT cushions are constructed of Kevlar textile coated by rubber, further increasing their safety co-efficient and resistance to penetration. Kevlar is five times stronger than steel and thereby suited for repetitive work in harsh environments, including construction, energy, industrial, resources and civil engineering sites.
The cushions combine the advantages of high durability and power with gentle, precisely controlled lifting that can spread the load over broader surfaces of the object being lifted, rather than point loads.
They can be used in confined spaces underneath inaccessible loads ranging from engines and plant, through to foundations of bridges, buildings, machinery, pipeline structures and resource development rigs requiring lifting for inspection and repair.
This can be particularly useful, when working in confined spaces such as trenches and mines where there is little room beneath pipelines and plant.
The features of the product include:
- Construction from thread layers coated with chemical-resistant elastomer, hot vulcanised, under pressure, in one operation
- Strokes from 85 to 500mm, with longer strokes provided by combinations of cushions
- In addition to standard sizes, specific sizes and shapes can be made to order to suit particular applications
- Ease of use, with inflation either by compressor or simple air cylinders
- Removable inflation connector
- Inflation pressures up to eight bar, regardless of stroke (CLT models – CPB pressures vary from under one bar, depending on model)
- Non-slip surface providing maximum friction when stacking two cushions
- Cross-marked for easy centring of the cushion under load
- Can be used for straight lifting as well as for pressing, clamping, tilting and guiding applications
- Control systems tailored to particular uses
- Available with a large selection of optional accessories designed for different applications
- Basic safety rules inscribed on the cushions