Rails


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Application
Bearings are normally supplied and installed in sets of two to form an assembly that can be preloaded to eliminate side play.
Mounting and banking surfaces must be smooth and flat, and accurately parallel, coplanar, or perpendicular respectively to achieve maximum accuracy. Preload forces must be evenly distributed. Dirt and dust must be excluded. Lubrication required depends on the application, ranging from light grease or oil at the time of installation for low speeds (less than 50 inches/min.) and occasional movement to continuous oil bath or mist at 1200 inches/min.

Construction
Each bearing consists of a pair of hardened steel ways containing 90 vee grooves, and a row of alternately crossed cylindrical rollers. The hardened steel rollers are captive in a brass cage for easy handling and assembly and permanent alignment. The ways are installed face to face by the user, with the rollers between the vee grooves.