A full line of Rotary Stroke Bearings is now available from Mahr Federal. Suitable for a wide range of applications where linear, rotary and combined movements are required, MarMotion high precision linear or Rotary Stroke Bearings can be specified for high precision applications such as machine tool spindles and pick-andplace assembly robots used in semiconductor manufacture. MarMotion bearings have even been used on the Hubble telescope,” said aMahr Federal spokesperson. Originally developed by Mahr in order to increase the measuring accuracy and certainty of its dimensional metrology products,MarMotion rotary stroke bearings are used in measurement transducers, positioning units, centering and tilting tables, and in other modules that have an influence on the measuring result. “MarMotion high-precision rotary stroke bearings exhibit virtually no backlash, stick slip or wear, and their motion is exceptionally smooth and reproducible,” said the spokesperson. Other applications for MarMotion Rotary Stroke Bearings include uses such as components in packaging machines in a wide range of industries, in automatic assembly units, textile machines and high-quality special-purpose machines. MarMotion bearings are used in optical engineering to enable stick-slip-freemovement of lenses, mirrors and diaphragms, and are suited for both large and heavy optical elements as well as for miniature design in small objectives. For small applications, small ball diameters reduce installation space, and MarMotion Minis come paired without play for components including small control elements for placer heads and laser welding technology, as well as blade holders, jigs or fixtures. The size and form accuracy (roundness and cylindricity) of the MarMotion rotary stroke bearings’ micro-finished running faces of shafts and bushings is less than 1/3 ISO standards; and only grade 5, sorting class P0 steel balls (DIN 5401 or ISO 3290) are used. Factory preloaded balls and a low coefficient of friction virtually eliminate backlash and ensure smooth operation. Options include various thread combinations of guide shafts; closed or open guide bushes with or without Stop rings; sealing rings or wipers; and plastic or brass ball cages with ceramic or stainless steel balls. Mahr can also manufacture special designs for particular applications and requirements, or use alternative materials For more information contact: Mahr Federal Inc. 1144 Eddy Street Providence, RI 02905 800-343-2050 / 401-784-3100 information@mahr.com www.mahr.com