BAER SUPER HSSE-TIN Machine Forming Tap MF 4 x 0.5 - DIN 371
BAER SUPER HSSE-TIN Machine Forming Tap MF 4 x 0.5 - DIN 371
Forming taps are also known as fluteless taps. They produce particularly load-bearing internal threads in a non-cutting process. During thread forming, the polygonal profile compresses the material fibres and does not cut them, as is the case with thread cutting. This results in higher material strength and a smooth surface. Small forming pockets are formed at the tips of the resulting thread.
High frictional forces occur during thread forming, so it is essential to ensure sufficient lubrication. The oil grooves provide the necessary lubrication up to depths of 2.5 times diameter.
Cold forming is not possible with all materials. Light metals, pure titanium, non-ferrous metals and steels, among others, are well suited. Since the required torques cannot be achieved by manual application, machine use is indispensable.
Advantages of forming taps
- No chips are produced
- Up to 20 times higher tool life time (compared to taps)
- Simultaneously for through hole and blind hole
- Wide range of materials can be machined
- Wrong cutting of the thread is impossible
- No pitch or flank angle errors
- Very true to gauge
- Higher strength of the holding thread due to material deformation or uninterrupted fibre flow
- Higher surface quality
- Much higher cutting speed
Comparison
Dimensions
| Diameter |
4 |
|---|---|
| Nominal diameter in inches |
0,157 |
| Nominal diameter in mm |
4 |
| Pitch |
0,5 |
| Pitch in mm |
0,5 |
| Dimension |
MF 4 x 0,5 |
Characteristics
| Product group |
Forming Taps |
|---|---|
| Product type |
Forming taps |
| Thread standard |
MF: Metric ISO fine thread according to DIN 13 |
| Tolerance |
ISO2/6HX |
| Direction |
Right |
| Standard |
DIN 371 |
| Tensile strength at room temperature |
up to 850 N/mm² | 25.5 HRC |
| Material |
HSSE TiN |
Technical information – Forming taps
3.8 mm
Through hole and blind hole up to 2.5 x D
Form C with lubrication grooves
2-3 threads
Chipless
External cooling and lubrication
HSSE TiN
up to 850 N/mm² | 25.5 HRC
ISO2/6HX
Applications
- Steels up to 850 N/mm²
- Stainless steels up to 850 N/mm²
- Cast aluminium and wrought alloys Si <10% (average chip length)
- Copper, copper alloys and brass (long-chipping)
Technical drawing
| D1 |
MF 4 x 0,5 |
|---|---|
| D2 |
4,5 mm |
| L1 |
63 mm |
| L2 |
12 mm |
| L3 |
21 mm |
| Diameter |
4 |
| Square |
3,4 mm |
Application – Sample materials
| Construction steels, case-hardening steels | Cutting speed vc in m/min | |
|---|---|---|
| 1.0050 | St 50-2 | 40 - 45 |
| 1.0718 | 11SMnPb30 | 40 - 45 |
| 1.7131 | 16MnCr5 | 40 - 45 |
| 1.7320 | 20MoCr3 | 35 - 45 |
| Alloyed steels, quenched and tempered steels | Cutting speed vc in m/min | |
|---|---|---|
| 1.0511 | C40 | 35 - 40 |
| 1.1269 | Ck85 | 35 - 40 |
| 1.1193 | Cf45 | 35 - 40 |
| 1.0601 | C60 | 35 - 40 |
| Stainless steels (ferritic, austenitic, martensitic) | Cutting speed vc in m/min | |
|---|---|---|
| 1.4105 | X6CrMoS17 | 15 - 20 |
| 1.4301 | X5CrNi18-10 (V2A) | 15 - 20 |
| 1.4571 | X6CrNiMoTi17-12-2 (V4A) | 15 - 20 |
| 1.4125 | X105CrMo17 | 15 - 20 |
| Pure aluminum, aluminum cast and wrought alloys Si < 10% (medium chip length) | Cutting speed vc in m/min | |
|---|---|---|
| 3.0205 | Al99 | 40 - 45 |
| 3.3315 | AlMg5 | 40 - 45 |
| 3.1645 | AlCuMgPb | 40 - 45 |
| 3.2373 | G-AlSi9Mg | 35 - 40 |
| Copper alloys, brass (long-chipping) | Cutting speed vc in m/min | |
|---|---|---|
| 2.0060 | E-Cu 57 | 40 - 45 |
| 2.0321 | CuZn37 (Ms58) | 40 - 45 |
| 2.1020 | CuSn6 | 40 - 45 |
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
- MF - ISO metric fine 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
