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| Rotary bearing for precision positioning applications PM Bearings and The Precision Alliance introduce the FMB Series high precision rotary bearings. The FMB Series is suitable for rotary positioning systems where both precision and height are critical. The various bearings sizes are 8˝ to 12˝mm tall yet deliver radial and axial run-out from 10µm down to 1µm and wobble from 6µrad down to 2µrad. The FMB is constructed of high quality bearing steels, PTFE filled, plastic ball cage and super precision steel balls. The specially designed raceways increase load capacity and stiffness while guaranteeing high precision, long life, and a low coefficient of friction. There are 9 standard sizes with OD's ranging from 120mm to 350mm and ID's ranging from 40mm to 250mm. Each size has different precision grades and preload classes. Additionally, for OEM applications custom sizes are available up to 500mm OD to exactly match the application. FMB flat mounted bearings are manufactured in two quality grades Normal and Precision grade and are supplied by default with zero clearance. write your comments about the article :: © 2007 Construction News :: home page |