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CoroTap® 400
CoroTap 400 is a high-speed, chip-free forming tap suitable for both through- and blind-holes in steel, stainless steel, aluminium and HRSAs. Versatile and optimized forming taps are available, with and without oil grooves, in an assortment of diameters, grades, coatings and thread forms to suit a range of applications.
The hole
For basic hole size calculations, use the appropriate formulas for forming taps. D = Hole diameter (mm, inch)
TD = Nominal thread diameter (mm, inch)
TP = Thread pitch (mm, inch)
The component
When the hole is analyzed, have a look at the workpiece material, component shape and quantity.
The machine
The machine influences: Always consider:
Tool holding
For optimal process security and precision tapping, CoroChuck™ 970 is the ideal holder for CoroTap 400. It is suitable for use on CNC machines with synchronized tapping cycles.Learn more
Application tips
Choosing the right tap
Based on application material and hole specifications, select the correct tap.
Coolant
Coolant is critical to a successful tapping operation. The coolant supply influences chip evacuation, thread quality and tool life.
Keys to a successful tapping operation
To ensure a good tapping operation and a high-quality finished product, follow these steps.
Threading chamfer type
The type of hole to be tapped determines which chamfer type is best suited to use. There are three different chamfer types, B, C and E.
When and why to use CoroTap 400
- For steel, stainless steel and aluminium
- Can be used for all types of holes
- Up to 3.5 x threading depth
- Chip-free threading solution
- Increases the strength of the thread in some materials, e.g. aluminium
Why a forming tap?
- Faster than cutting tap
- Often gives a longer tool life
- One tool for both through and blind holes
- Stabile design = lower risk for breakage
- No chips
- Quick tool change
- Stronger threads due to cold work hardening
- Very good thread surface
Recomendation
Cutting fluid/emulsion
There are several options for cutting fluids, depending on the application:- Mineral oil based
- Synthetic coolant
- Semi synthetic cutting fluid
- Vegetable oil based
- Straight oil
It is important to always be aware of the type of cutting fluid used in the machine as well as the oil content.
Learn more
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