BAER HSSE-TiAlN Machine Tap Form B - M 8 x 1.25 - DIN 371 Light Metals
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BAER HSSE-TiAlN Machine Tap Form B - M 8 x 1.25 - DIN 371 Light Metals
Our machine taps are powerful and reliable taps for efficient machining in one step with the machine. Machine taps are used especially in industrial manufacturing. They can be used in CNC machines, thread cutting machines, cordless drills and pneumatic tapping arms, among others. As they are characterised by high efficiency and low production costs, they are often used in series production. The thread is cut by machine in one operation. Thus, although the BAER machine tap can basically be compared to short machine tap, it is designed for use with the machine.
The screw tap has a reinforced shank according to DIN 371. This means that the shank diameter is larger than the thread itself. This makes the screw tap run more stably. However, it limits the thread length that can be cut with it. It can be used for through holes because the long chamfer, the straight flutes and the spiral point ensure that the chip is transported forward out of the hole.
Every material shows individual chip behaviour. Therefore, screw taps must have the correct rake angle and - for even better results - a specially treated surface. This is the only way to achieve a good chip transport and to produce a thread that is true to gauge.
The high quality of the cobalt-alloyed HSSE steel that we use ensures that our tools are extremely durable and robust. Due to special hardening processes and repeated tempering the hardness structure is very homogeneous, which forms the ideal basis for a genuine BAER screw taps. This increases the toughness and stability of the screw taps, allowing them to remain in use for longer.
The TiAlN coating is more resistant to friction and heat and therefore offers performance advantages at high temperatures, few cooling options (such as with small dimensions and deep holes) and faster cutting speeds (more than 60 m/min). TiAlN also has advantages when machining poorly machinable and wearable materials and can also be used dry to a limited extent. Recoating of TiAlN tools is possible up to 5 times without removing the old coating
Dimensions
| Diameter |
8 |
|---|---|
| Nominal diameter in inches |
0,315 |
| Nominal diameter in mm |
8 |
| Pitch |
1,25 |
| Pitch in mm |
1,25 |
| Dimension |
M 8 x 1,25 |
Characteristics
| Product group |
Screw taps |
|---|---|
| Product type |
Machine taps |
| Thread standard |
M: Metric ISO standard thread according to DIN 13 |
| Tolerance |
ISO2/6H |
| Direction |
Right |
| Standard |
DIN 371 |
| Tensile strength at room temperature |
up to 700 N/mm² |
| Material |
HSSE TiAlN |
6.8 mm
Through hole up to 2.5 x D
Form B with spiral point
4-5 threads
Chips are removed downwards in the direction of cutting
External cooling and lubrication
HSSE TiAlN
up to 700 N/mm²
ISO2/6H
Applications
- Magnetic soft iron
- Pure aluminium, aluminium casting and wrought alloys Si<5% (long-chipping)
- Pure copper, copper alloys and brass (long-chipping)
Examples of applications
- M8 bicycle thread for clamping stem shaft and saddle
Technical drawing
| D1 |
M 8 x 1.25 |
|---|---|
| D2 |
8 mm |
| L1 |
90 mm |
| L2 |
18 mm |
| Diameter |
8 |
| Square |
6,2 mm |
Application – Sample materials
| Pure aluminum, aluminum cast and wrought alloys Si < 5% (long chip length) | Cutting speed vc in m/min | |
|---|---|---|
| Al99,5 | EN AW-1050 | 30 - 40 |
| AlMgSi | EN AW-6060 | 30 - 40 |
| AlZn5Mg3Cu | EN AW-7022 | 30 - 40 |
| AlMg5 | EN AC-51300 | 30 - 40 |
| Pure copper, copper alloys, brass (long-chipping) | Cutting speed vc in m/min | |
|---|---|---|
| 2.0060 | E-Cu57 | 15 - 18 |
| 2.0855 | CuNi2Si | 15 - 18 |
| 2.0360 | CuZn40 | 15 - 18 |
| 2.1020 | CuSn6 | 15 - 18 |
| Soft magnetic iron | Cutting speed vc in m/min | |
|---|---|---|
| 1.1014 | RFe80 | 30 - 35 |
Cutting speed vc [m/min] = (Outer diameter * π * speed) / 1000
Rotation speed n [1/min] = (Cutting speed in m/min * 1000) / (Outer diameter * π)
Feedrate programming [mm/min] = speed * pitch
Please note that the above cutting speeds are indicative and must be adjusted depending on lubrication and actuation.
Further information
- M - Metric ISO thread DIN 13
- Designations, geometries and definitions on taps
- Thread tolerances of the internal thread
- Internal thread and core hole dimensions
- Tap Chamfer forms
- Comparison inch-mm
- Surface treatments on tapping tools
- Cutting speeds and lubrication/cooling
- Information about tapping
- Material table
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