The fixed and also the adjustable face-knurling holder are available in a standard or heavy duty version. The buildup of the fixed and the adjustable holder is the same, the adjustable holder allows to double the knurl up to a diameter of 64 mm. When knurling on these larger diameter the tip of the die is not on the center of the part, but if the knurl “band” on the part is narrow an acceptable impression can be made. In general if the rate of pitch change on the part is within 10 % of the rate of pitch change on the die a good straight knurl will be made.
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