Stock Drive Products (New Hyde Park, NY) offers the A 6A18M Series of 1-mm pitch timing belt pulleys for miniature applications. The pulleys are available in 17 different sizes, ranging from 18 to 75 grooves. The clear, anodized aluminum pulleys are designed for 3-mm and 6-mm-wide belts, and are offered with double-flange and no-flange options, pitch diameters from 5.73 to 23.87 mm, and with bore sizes from 2 to 5 mm. Pulleys with 18 to 45 grooves have one set screw; others have two at 90º.
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