Camfield Engineers offers FD Series Cam Indexing Systems. These are manufactured with an objective to convert a constant rotary motion in the input shaft into an intermittent motion in the output shaft. Camfield cam indexing systems use a globoidal type can in conjunction with followers mounted radially outward from the circumference of the follower wheel. The input shaft is at right angle to the output shaft. The follower wheel is located and locked by a straight portion of the tapered rib, which engages two followers under pre-load. Index occurs when the ribs curvature rotates the follower wheel. Two followers are still engaged during this stage, preventing backlash. Three followers are still engaged by the rib, at least two of which remain under pre-load thus backlash is always prevented.
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