The tap should be passed through the nut after tapping and not backed out by reversing rotation. This promotes good chip removal and coolant flow.
Tap forms it iso#
ISO Trapezoidal (“metric Acme”) tandem taps are also available with standard or metric shanks and squares.įor tapping power screw threads, best results are obtained using a vertical, lead screw set-up. Consult with Roton Applications Engineering. For shorter nuts and nuts made from highly machinable materials, Acme Hand Taps may suffice. For longer nuts or nuts made from alloy steel, stainless steel or other alloys with low machinability, special taps may be required. Tandem Acme and Hi-lead® taps dimensioned on the backside may be used for nuts with a maximum thread length of twice the nominal diameter and for nut materials of brass, bronze, mild steel and cast iron. This allows the user to tap a nut in a single pass. This style of tap has both a roughing and a finishing section (see Figure 13). We recommend using tandem style taps for tapping power transmission thread forms.
Tap forms it manual#
If an extra long nut has been specified to improve axial support, consider counter boring a portion of the nut to the OD of the screw thread. Thru holes greater than twice the OD of the mating thread should be avoided.
To inquire on taps, please provide the following information: All Acme and Hi-lead® taps are engineered for each specific application guaranteeing improved performance and tool life over imported or domestic “off-the-rack” taps. With over 25 years experience in tapping power transmission threads, Roton engineers are well qualified to provide the optimum tandem or conventional tap for your application. Purchasing your taps through Roton will assure proper fit-up of the screws and nuts. For those times when a standard nut is not an option, purchasing a tap and tapping your own nuts is the best alternative. If an entire custom nut must be replaced, the replacement cost will be high, and delivery times will be much greater. Third, if a standard nut is used as an insert, when the nut wears out, the user only needs to replace an inexpensive nut. Second, it is much easier to modify the OD of a standard sleeve nut, or turn it down and use it as an insert into a custom form than it is to tap a custom nut. Power transmission thread taps are more expensive than nuts, usually many times more. Before purchasing a tap you should seriously consider using a standard sleeve nut either as an insert for a custom form, or by modifying the walls to suit your purposes. Most often, they do not find a nut with the outer dimensions they require, or they require a nut that is longer or shorter than standard. Many users consider tapping their own nuts because they cannot find a standard nut that fits their exact specifications. This section will alert you to an alternative to tapping your own nuts, explain the benefits of procuring your taps through Roton, give you a guide to submitting a tap inquiry, and provide you with a checklist for successful tapping. Taps for Lead Screw Thread Forms - General Information 800-GO-ROTON (80)įor customers who wish to manufacture their own special nuts for use on Roton supplied Acme or Hi – lead® screw stock, Roton offers a complete line of taps.
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