Electrode for Pseudo-Screw Tough Pitch Copper / Copper Tungsten
Brand :
MISUMI
Caution
- The diameter (d) of the electrode tip is smaller than the screw size (M). Insert the pseudo screw electrode in the tap hole and perform electrical discharge machining by radiating in the X and Y directions from the center. Do not perform rotational oscillation.
Product Description
For tapping high hardness steel. Available in many sizes (machining accuracy of screw part is ± 0.8 mm)
Specification Table
| Model Number | D | d | P | L | B | V (EMTB Only) | |
| M | |||||||
| EMTA (Tough Pitch Copper) EMTWA (Copper Tungsten) EMTB (Tough Pitch Copper / Water Hole Type) | 3 | 3 | 2.2 | 0.5 | 50 | 15 | 0.5 |
| 4 | 5 | 3.0 | 0.7 | 50 | 15 | 0.7 | |
| 5 | 5 | 3.9 | 0.8 | 60 | 20 | 1.0 | |
| 6 | 8 | 4.7 | 1.0 | 60 | 20 | 1.2 | |
| 8 | 8 | 6.4 | 1.25 | 60 | 20 | 2.0 | |
| 10 | 12 | 8.2 | 1.5 | 70 | 30 | 2.5 | |
| 12 | 12 | 10.0 | 1.75 | 70 | 30 | 3.0 | |
| 16 | 16 | 13.6 | 2.0 | 80 | 40 | 3.0 | |
| 20 | 20 | 17.1 | 2.5 | 80 | 40 | 3.0 | |
| EMTAP−L (Tough Pitch Copper Long Type) EMTAP−WL (Copper Tungsten Long Type) | 3 | 5 | 2.2 | 0.5 | 60 | 40 | − |
| 4 | 5 | 3.0 | 0.7 | ||||
| 5 | 5 | 3.9 | 0.8 | ||||
| 6 | 8 | 4.7 | 1.0 | ||||
| 8 | 8 | 6.4 | 1.25 | ||||
| 10 | 12 | 8.2 | 1.5 | ||||
| 12 | 12 | 10.0 | 1.75 | ||||
| 16 | 16 | 13.6 | 2.0 | ||||
| 20 | 20 | 17.1 | 2.5 |
[ ! ] Applicable M of EMTWA/EMTAP−WL is M3 to 12.
[ ! ] Since it is made of copper, there may be some bending. Tolerance: ±0.8 mm
Specification Overview
[EMTWA]
[EMTAP-WL]
● Since it contains tungsten, it can process workpieces with super hard material (electric discharge machines that can use copper tungsten electrodes are needed).
[EMTB]
● Through-hole machining for water circulation is provided. Machining speed can be increased, creating advantages such as reducing secondary discharge.