Tips film: Selecting the right tap – Sandvik Coromant

By Grover Koelpin 9 comments


Choosing taps The success of any tapping operation depends on the use of the appropriate
tap along with the correct set up. In this episode, we will focus on a number
of factors to be considered in selecting the right tap
for a specific job. Having the most appropriate tap
is the first step in reaching the required quality
and maximum performance levels. Therefore, a lot of focus should be
put on the tap selection process. So what factors should be taken
into account? Component material is the first
parameter to consider. The properties of the material,
such as the hardness, have an influence on the tap design. Along with the component material, the type of hole,
either blind or through hole, impacts greatly on the type of tap
that should be chosen. When tapping blind or through holes in short chipping materials
like cast iron, straight flute taps are recommended. When tapping through holes,
a spiral point tap is the best choice. As you can see, the spiral point is
designed to push the chips forward. When tapping blind holes,
choose a spiral flute tap. The flute is used both for chip evacuation and to give the best design
for the application. If you are looking for
a chip-free solution when tapping through and blind holes
in soft ductile materials, you can opt for forming taps. The thread is formed through
plastic deformation, providing a very good finish in the hole. After having considered both component
material and the type of hole, it is important to determine
which kind of tool you need to meet the requirements
of your application. When tapping high batch quantities
or the same component in the same material or components with specific
application requirements, taps optimized for specific materials
are recommended. Alternatively, if you are tapping medium
to small quantities or a variation of components across
a wide range of materials, taps optimized for versatility
and suitable for multi applications are the best option. In summary, several factors need
to be considered to make sure you get the best results
when tapping. We have discussed the influence
of the component material, the hole type and the batch size
on the tap selection. These choices, along with
the threading depth, will have an impact on
the cutting data. For more smart tips contact one of
our specialists or visit our website.

9 Comments

Calvin Witt

Apr 4, 2013, 5:55 am Reply

Really well done video on taps! I used to help teach in a school and saw people on CNC tapping aluminum with hand taps. Needless to say they got munched up and I had to reach why to not use hand taps! That said recently I started using forming taps in aluminum and boy could I not be happier. Taps last a long time, finish is impeccable and it takes less force in a small drill press application tapping sheet 7075 aluminum.

Chad C

Dec 12, 2015, 8:37 am Reply

If you're looking to go deeper with a tap use a "bottoming tap." They are designed with 1-2 half threads at the end of the tap. A more common "plug" tap has around 4 half threads. the "pointiest" of the commonly available taps is a "taper" tap with 7-10 half threads. Many people use the taper tap to start threading a hole and then switch to a "bottoming" tap if needed.

Ro Cuevas

Dec 12, 2016, 6:21 am Reply

Nice vid.
I wish you can help us to select the propper tap to make threads on a short blind hole. We need to make 5/16-24NF on a part made of 12L14 steel (pretty soft) but we want to know the minimum thread depth. Knowing that valie we will design the part and make the prototypes using the tool. The hint is, we want a tap which help us to make a really short blind taped hole.

Rob McCance

Sep 9, 2017, 2:24 am Reply

Killer jacket dood. Tapping in the rain, are ya?

Tony Nameless

Oct 10, 2017, 1:57 am Reply

I had received screw like hardware that says "M3".
So i bought M3 tap and tap turned out to be too big.
Who named M3 screw and M3 tap with same name but different size not working for each other ?

What tap do i need, M2.5 ? Because M3 is too big.

Aditya Kochar

Jan 1, 2019, 5:02 pm Reply

Hello
Which tap is good for aluminum casting of ADC12
For blind and thru hole

Argent 2

May 5, 2019, 7:06 pm Reply

Why are you wearing Rain jacket?

Chad Gros

Jul 7, 2019, 1:04 am Reply

I want one of those jackets

Alpesh Patel

Sep 9, 2019, 6:54 am Reply

We needed a M10 x 1P 6g .please a offer . eMAIL :- [email protected]

Leave a Reply