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World's smallest linear motion guide

Fourth Quarter 2004 Other technologies

THK is a leading global supplier of linear motion solutions and has launched what is believed to be among the world's smallest linear motion guides. The new versions of its proven RSR guides have carriages or blocks that measure down to just 4,0 mm in width, making them suitable for use in a wide range of miniature or precision applications, including electron microscopes, pick-and-place systems for electronics components, hard disk reading devices and medical equipment.

The latest versions of the miniature RSR are now available in block widths ranging from 4 to 10 mm and lengths from 6,2 to 17 mm. The new LM guides are suitable for use with maximum rail lengths from 100 to 180 mm and have basic dynamic load ratings of 37 to 307 N.

The RSR guides use a dedicated design, with the block running on precision ground stainless steel balls set into virtually frictionless raceways. The balls circulate within the body of LM block itself, enabling a wide range of stroke lengths to be easily accommodated.

THK states that unlike competing linear motion guides, the construction of its RSR ensures that a maximum number of balls are carrying the load at any point in time. This means that the system is capable of carrying relatively high loads perpendicular to the rail axis.

Wide block versions of the RSR are also available, increasing moment capacity, and all components can be supplied in stainless steel if required, for use in harsh environments.

SKF, one of the world's largest and most experienced manufacturers of quality bearings and associated products and sealing systems. It is also a supplier of power transmission products and couplings. SKF recently acquired the sole distribution rights for the THK product range in sub-Saharan Africa.

For more information contact Grant Baxter, SKF, +27 (0) 11 821 3500, [email protected], www.skf.com



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