Kennametal delivers productivity to customers seeking peak performance in demanding environments by providing innovative custom and standard wear-resistant solutions, enabled through our advanced materials sciences, application knowledge, and commitment to a sustainable environment.

Tappingspeeds and feedsCalculator

The best and most efficient operating speeds for taps cannot be calculated with the same certainty, as for many other metalcutting tools. With other tools, the feed per revolution can be set at any desired point and can be varied as conditions demand. Taps, on the other hand, must always be advanced at a rate equal to one pitch for every revolution. The style of tap may vary the conditions. For example, with a bottoming tap, the first thread on each land cuts the full height of thread, while, with a taper or starting tap, a number of threads do their share of the cutting before the full height of thread is reached. The depth of thread also varies, depending on the pitch. The coarser the thread, the greater the advance of the tap per revolution and the greater the amount of material removed.

Metric tappingspeeds and feedsCalculator

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Speeds and feeds are based off of stub, standard or neck relieved lengths only. Flood coolant recommended.Check back often as we're continually adding new product speeds and feeds calculations.

Tap feeds and speedspdf

*The RPM and Chip Load that automatically populates in this calculator are the factory suggested parameters for running the desired tool. Altering the Chip Load or RPM settings in any way without prior written approval from an authorized agent of CGC/Gorilla Mill will void any guarantee or warranty nor will CGC/Gorilla Mill or its agents be liable for any consequential damages due to said alteration.

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Tap feeds and speedschart

The best and most efficient operating speeds for taps cannot be calculated with the same certainty, as for many other metalcutting tools.

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The method of feeding the tap, and the type of equipment for driving, also influences the permissible speeds. If taps are mechanically fed at the proper rate of advance, they can be operated at higher speeds than if they are required to feed themselves and pull some part of the machine along with them.