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Festo has launched two series of high-performance electric cylinders employing the company’s tubular linear-motor technology.

Both series feature similar dimensions and mechanical interfaces as their pneumatic counterparts, making them true drop-in, electrically-driven alternatives.

The cylinders offer fully programmable, closed-loop position, acceleration and speed control, and are ideal for applications that demand extremely fast and accurate positioning capabilities.

The heavily patented linear motors are based on a tubular design, using high-flux annular magnets on the actuator rod, closely surrounded by a series of specialised windings on a long stator coil.

Festo’s design offers a number of significant advantages, including low moving mass and a complete absence of flexible cabling to the moving parts.

The cylinders have no external magnetic field and are suitable for environments subject to swarf, such as in machine-tool applications.

Festo’s DNCE-LAS electric cylinders have the same form factors as the company’s DNC series of piston-rod pneumatic cylinders.

There is a choice of three 32mm profile models with stroke lengths of 100, 200 and 320mm, and four 40mm profile models with stroke lengths of 100, 200, 320 and 400mm.

The cylinders offer a variety of acceleration, speed and thrust ratings – the largest model can accelerate at up to 90m/s2, handle a velocity of 3m/s, and is capable of producing a thrust force of 202N peak and 55N continuous.

All seven models provide high positioning repeatability to within +/-0.02mm.

Pressurised air-cooling and pneumatic-clamping unit options are available.

DNCE-LAS electric cylinders are suitable for applications involving loads up to 1kg that do not exert twisting forces on the actuator, such as small parts unloading, sorting and packaging machines.

For applications that demand a higher load capacity and resistance to twisting forces, Festo has launched the DFME-LAS series guided electric cylinders.

These employ the same tubular linear motor as the DNCE-LAS series, but are equipped with two ball-race-guide assemblies to provide extra rigidity.

There is a choice of seven different models, spanning stroke lengths from 100 to 400mm.

The most powerful DFME-LAS series guide electric cylinder can accommodate twisting moments in excess of 6Nm, has a payload capacity of 6kg, and can accelerate at up to 54m/s2.

All Festo DNCE-LAS and DFME-LAS electric cylinders are intended for closed-loop control – they feature a built-in magnetic encoder to provide feedback to the motor controller.

Festo has launched a motor controller – known as the SFC-LAC – to partner its electric cylinders, supplied as a complete ready-to-run unit which incorporates a power-output stage and all necessary control interfaces, as well as an optional HMI.

It features a built-in digital I/O interface as standard with Canopen, Devicenet and Profibus interfaces available as options.

The controller is very easy to commission: all set-up parameters – including complete move profiles defining velocity, acceleration and deceleration – can be developed offline on a PC, using Festo’s Windows-based FCT software, and then downloaded to the controller.

As many as 31 move profiles can be stored on the controller and linked together so that entire motion control sequences can be executed independently of the host PLC.

Additional move profiles can also be specified via fieldbus whenever required.

Festo’s DNCE-LAS and DFME-LAS electric cylinders have the same form factors and mechanical interfaces as their pneumatic counterparts, making it easy for system designers to mix and match different drive technologies to create task-optimised automation.

The company produces a wide range of accessories, including cylinder rod ends, foot mounts and clamping brackets.

About Festo

Festo manufactures pneumatic and electrical components and systems to support customers with factory and process automation. The company has an annual turnover in excess of 1.7 billion Euro, employs 12,800 people around the world and has facilities in 176 countries around the world. Festo operates an aggressive R&D programme investing 7.5% of sales annually, holds over 2,800 worldwide patents, introduces about 100 innovative new products to the market every year and has a product range of over 30,000. For more information about the company’s products and services, please visit our website.  

About Festo Didactic

Festo Didactic, the training and consultancy division of Festo, supports organisations seeking to develop competencies in sales & service, leadership, employee engagement, change management, team-working, coaching, business planning, production processes and automation technology. The division has particular expertise in working with manufacturing and engineering businesses. It has a full time workforce of over 200 and operates in 70 countries worldwide. Each year, it manages more than 230 consultancy projects and runs more than 2,900 open courses in 26 languages, involving some 42,000 participants. For more information about Festo Didactic, please visit the Festo website and follow the link.

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