TAPS

• These are straight flute general purpose taps which can be used for both machine or hand tapping. They are generally the most economical tool for use on production runs, but are best on materials that produce chips, or where the swarf breaks readily. Where deep holes are to be tapped, in materials which produce stringy swarf, other types of taps may be needed, especially for coarse threads.

• Hand taps can be supplied in sets of three; bottom, second and taper leads, or individually.

• TAPER TAPS have a lead of 7-10 threads at 5 degrees per side. The taper lead distributes the cutting force over a large area, and the taper shape helps the thread to start. They can therefore be used to start a thread prior to use of second or bottom leads, or for through holes.

• SECOND TAPS have a lead of 3-5 threads at 8 degrees per side. They are the most popular and can be used for through holes, or blind holes where the thread does not need to go right to the bottom.

• BOTTOM TAPS have a chamfer (lead) of 1–2 threads, the angle of the lead being around 18 degrees per side. They are used to produce threads close to the bottom of blind holes.

• THREAD FORMS

• M, MF, ME, BSW, BSF, BA, BSB, BS CON, BSP, BSPT, UNC, UNF, NPT, NPS

THREAD FORMS

• M, MF, ME, BSW, BSF, BA, BSB, BS Con, BS Cy, WF, BSP, BSPT, UNC, UNF, NPT, NPS, UNS, Tap & Die Cased Sets,Tap & Die Accessories

Spiral Point Taps is also known as ‘gun nose’ or ‘bull nose’ or chip driver. These taps are dimensionally the same as a hand tap, second lead, but have the cutting face ground back relative to the axis of the tap, for the lead portion.

This gives the flute a better cutting action, requiring less power, and pushes the cut material forward, allowing free flow of coolant along the flutes to the cutting edge.

The flutes are not ground as deeply as for hand taps, giving the tap greater strength. It can therefore be run at higher speeds. Spiral point taps are ideal for machine tapping of through holes, or blind holes where there is enough clearance beyond the threaded portion to accommodate the swarf.

Advantages

• Thread Chamfer is of 4.5 threads & cutting load is distributed

• Shallow flute depth, hence stronger tap

• Chip clogging is eliminated as the tap pushes the chip forward and thus enhancing tool life.

Spiral Point Taps

Steel, Stainless Steel, Cast Iron, Non Ferrous, Super Alloys

SPIRAL FLUTE – These taps are used to produce a thread close to the bottom of a blind hole and therefore have a very short lead.

The right hand spiral cut of the flutes acts to force the swarf away from the cutting teeth to the rear of the flutes and out of the hole. They are better on materials which form long continuous stringy swarf, rather than chips.

They are also better to tap a thread in a hole where there is a break in the material, e.g. another hole, as the spiral fluting helps the tap to pick up on the other side. Spiral flute taps can have slow or fast helix angles.

Advantages

• Can be used in both blind holes & also in through holes

• Chips are pushed upwards due to spiral flute – Chip clogging avoided

• Full thread depth can be achieved and this design prevents tap breakage

Spiral Point Taps

Steel, Stainless Steel, Cast Iron, Non Ferrous, Super Alloys

Straight flute taps dimensionally same as hand taps & with a lead chamfer of 1.1/2 threads. The flute & rake angle are designed as per application.

These Taps are recommended for tapping on grey cast iron, S G iron & steel. The chips produced are short or powder type with the help of special design provided in the tap

Advantages

• Cutting edge geometry production short chips

• Special process for stress relieving on cutting edge

• Radial and axial through coolant taps

Spiral Point Taps

Steel, Cast Iron, Non Ferrous,

Forming Taps otherwise known as ‘Roll’, ‘Fluteless’ or Polygon taps. Used for the chipless production of threads in ductile materials such as copper, aluminium, soft brass or steel. Threads produced by fluteless taps are formed by plastic deformation, they are not cut.

These taps do not have flute or cutting edges but have special roll forming lobes with circular land. They are operated at high speeds and are better at maintaining gauge qualification.

Because they produce no chips they are very suitable for blind hole application as well as through hole application.

Advantages

• Optimized lobe form reduces friction

• Chamfer geometry for uniform load distribution

• Radial and axial through coolant taps

Forming Taps (SD)

Non Ferrous

TOTEM’s new range of Solid Carbide Taps, suitable for mass production with high wear resistance and extreme toughness.

• Special submicron grade carbide with high TRS state of art carbide grades

• CNC Blank grinder is used to prepare carbide tap blanks to achieve high level of dimensional accuracy as well as surface finish to establish close tolerance control

• TOTEM Solid carbide taps are manufactured on state of art machines

• Special tooling attachments are used to get high accuracy on thread form

• Tap scanning, critical to quality measurements & surface measurements are being done with 3-D scanning equipment

• Ideal for mass production with cutting speeds up to 4X higher compared to HSS-E taps

• Fewer tool changes due to high wear resistance, resulting in optimum machine output and high tool life

• Internal coolant option with radial or axial coolant outlet for improve swarf management and longer tool life

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Features

• Manufactured from High grade HSSE Steel

• Tight thread tolerance for better consistency and higher life

• Special treatment for stress relieving

• Surface treatment – TiN / TiCN

This tap can be directly put on the machine or can be connected to bent shank:

Range

• M3 to M30 (Coarse & Fine pitch)

• 3/16” to 3/4″ Imperial sizes (BSW / UNC / UNF)

TThe tap has got threaded shank & the bent shank can be connected with Coupler

Range

• M8 to M36 (Coarse & Fine pitch)

• 5/16” to 1″ Imperial sizes ( UNC / UNF)