New Design of Slim Linear Encoders by RSF

RSF Elektronik is Based in Austria With North American Representation Through Sister Company HEIDENHAIN Corporation

| Source: HEIDENHAIN Corporation

SCHAUMBURG, Ill., Feb. 28, 2012 (GLOBE NEWSWIRE) -- Featuring an innovative new design, RSF releases the new slim profile linear encoder series MSA 700 and 800 tailor-made for metrology applications which require protection from contamination. Typical applications for these encoders are optical comparators, and video and vision systems. The main advantages offered by these encoders are generous mounting tolerances, low level backlash and optimized thermal behavior.

Central to the innovative design of these new encoders is the reading carriage and reading head connected by a wear-free and maintenance-free magnetic coupling. The carriage is also constrained by a magnet guide that affects the ferromagnetic tapes on the extrusion. Hence, there are no forces that could stress guide parts and no contact points that could prematurely wear. Improving upon old roller bearing or spring coupled encoders, the new magnetic coupling and guide eliminates wear and provides even pressure along the measuring length. This combination allows for generous mounting tolerances without any negative influence on accuracy. An additional benefit of this magnetic coupling is the extremely low backlash, reducing one of the main weaknesses of sealed encoders.

The fiber-reinforced sealing lips made of fluororubber (Viton) are wear and coolant resistant, allowing the encoder to operate in harsh environments. High velocities are also possible due to the high degree of rigidity and ideally formed blade area of the reading head.

The scale itself is fastened via a flexible adhesive film in the profile, which compensates for the differing linear expansion between the glass and the aluminum. Thus a reproducible thermal growth is ensured by symmetrical expansion or shortening of the scale to the profile. Expansion differences between the aluminum profile and machine slide are accommodated by flexible fastening elements.

This new MSA 700 and 800 series is defined as sealed incremental linear encoders that have grating pitches of 20, 10, and 8 microns, and come in accuracies of 2, 3 and 5 microns. This makes them the perfect choice for customer applications requiring precision and protection. They have the same mechanical footprint and electrical properties of the MSA 600 series, and can be customized to suit customer specifications.

For more information on this encoder, RSF Elektronik can be accessed directly via the web site at The North American contact for RSF products is Kevin Kaufenberg (at 847-490-0387 or in the HEIDENHAIN Corporation offices at 333 E. State Parkway, Schaumburg, IL 60173.

NUMERIK JENA is based in Jena, Germany with North American representation and distribution through sister company HEIDENHAIN Corporation in Schaumburg, IL, USA. NUMERIK JENA is known worldwide for offering high quality compact linear and rotary encoders for positioning of implements and workparts in high precision settings. All NUMERIK JENA products are contact-free to assure a motion sequence free of backlash, and are commonly found in XY and rotary tables, equipment for semiconductor production, robots, and medical device applications.

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[Image] RSF Slim Linear Encoder