BAER HSSE-TiAlN Machine Tap - 40° RSP - G (BSP) 7/8 x 14 - DIN 5156 Stainless Steel
BAER HSSE-TiAlN Machine Tap - 40° RSP - G (BSP) 7/8 x 14 - DIN 5156 Stainless Steel
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 with short machine taps, it is designed for use with the machine.
The machine tap can be used for blind holes, as the short chamfer and the spiral flutes ensure that the chip is discharged to the rear 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 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 |
7/8 |
|---|---|
| Nominal diameter in inches |
1,189 |
| Nominal diameter in mm |
30,2 |
| Pitch |
14 |
| Pitch in mm |
1,814 |
| Dimension |
G (BSP) 7/8 x 14 |
Characteristics
| Product group |
Screw taps |
|---|---|
| Product type |
Machine taps |
| Thread standard |
G (BSP): British Standard Pipe Thread according to DIN ISO 228 - Cylindrical pipe thread |
| Tolerance |
ISO2/6H |
| Direction |
Right |
| Standard |
DIN 5156 |
| Tensile strength at room temperature |
up to 1300 N/mm² | 41 HRC |
| Material |
HSSE TiAlN |
28.25 mm
Blind hole up to 2.5 x D
Form C 40° RSP
2-3 threads
Chips are removed upwards against the cutting direction
External cooling and lubrication
HSSE TiAlN
up to 1300 N/mm² | 41 HRC
ISO2/6H
Applications
- Stainless steels, INOX, V2A, V4A
- Difficult-to-machine materials up to a maximum of 1200 N/mm²
- Alloyed heat-treatable steels, nodular cast iron, malleable cast iron
- Cast aluminium and wrought alloys Si<5% (long-chipping)
- Copper alloys and brass (long-chipping)
Examples of applications
- Inch thread or Whitworth thread in the sanitary sector
- G-pipe pipe thread
- Fittings, connectors, nipples, threaded fittings for water pipes, sanitary threads, water threads
- Double nipples and double pipe nipples
- Angle connection
- Pipe threaded connections
Technical drawing
| D1 |
G (BSP) 7/8 x 14 |
|---|---|
| D2 |
22 mm |
| L1 |
150 mm |
| L2 |
32 mm |
| Diameter |
7/8 |
| Square |
18 mm |
Application – Sample materials
| Stainless steels (ferritic, austenitic, martensitic) | Cutting speed vc in m/min | |
|---|---|---|
| 1.4104 | X14CrMoS17 | 10 - 12 |
| 1.4301 | X5CrNi18-10 (V2A) | 10 - 12 |
| 1.4571 | X6CrNiMoTi17-12-2 (V4A) | 10 - 12 |
| 1.4005 | X12CrS13 | 6 - 8 |
| Construction steels, case-hardening steels | Cutting speed vc in m/min | |
|---|---|---|
| 1.0050 | St50-2 | 30 - 35 |
| 1.0401 | C15 | 25 - 30 |
| 1.7147 | 20MnCr5 | 30 - 35 |
| 1.5919 | 15CrNi6 | 30 - 35 |
| Alloyed steels, quenched and tempered steels | Cutting speed vc in m/min | |
|---|---|---|
| 1.8515 | 31CrMo12 | 5 - 10 |
| 1.0503 | C45 | 25 - 30 |
| 1.7218 | 25CrMo4 | 5 - 25 |
| 1.6511 | 36CrNiMo4 | 5 - 25 |
| Spheroidal graphite cast iron, malleable cast iron | Cutting speed vc in m/min | |
|---|---|---|
| EN-JS-1030 | EN-GJS-400-15 (GGG40) | 20 - 25 |
| EN-JS-1070 | EN-GJS-700-2 (GGG70) | 20 - 25 |
| EN-JM-1010 | EN-GJMW-350-4 (GTW-35) | 20 - 25 |
| EN-JM-1140 | EN-GJMB-450-6 (GTS-45) | 20 - 25 |
| 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 | 15 - 18 |
| Copper alloys, brass (long-chipping) | Cutting speed vc in m/min | |
|---|---|---|
| E-Cu 57 | EN CW400A | 15 - 18 |
| CuZn37 | EN CW 508 L (Ms58) | 15 - 18 |
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
- G (BSP) - British Standard Pipe DIN ISO 228 - Cylindrical pipe thread
- Whitworth Pipe Thread
- 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
