Tube Electrode (Bored)
Tube electrode with central flushing bore for fast-hole EDM drilling.
This is a dimension schematic, not a manufacturing drawing. Dimensions match the catalog data; request a quote with the part code to confirm before production.
Code & Size Table
Code, dimensions and tolerance for all 10 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| ELEB-TUB-03 | 3 | 40 | ⌀1 | h7 | internal flushing bore ⌀1.0 |
| ELEB-TUB-04 | 4 | 50 | ⌀1.5 | h7 · ⌀4: 0/−0.012 | internal flushing bore ⌀1.5 |
| ELEB-TUB-05 | 5 | 60 | ⌀2 | h7 · ⌀5: 0/−0.012 | internal flushing bore ⌀2.0 |
| ELEB-TUB-06 | 6 | 70 | ⌀2.5 | h7 · ⌀6: 0/−0.012 | internal flushing bore ⌀2.5 |
| ELEB-TUB-08 | 8 | 90 | ⌀3 | h7 · ⌀8: 0/−0.015 | internal flushing bore ⌀3.0 |
| ELEB-TUB-10 | 10 | 100 | ⌀4 | h7 · ⌀10: 0/−0.015 | internal flushing bore ⌀4.0 |
| ELEB-TUB-12 | 12 | 110 | ⌀5 | h7 · ⌀12: 0/−0.018 | internal flushing bore ⌀5.0 |
| ELEB-TUB-14 | 14 | 120 | ⌀6 | h7 · ⌀14: 0/−0.018 | internal flushing bore ⌀6.0 |
| ELEB-TUB-16 | 16 | 130 | ⌀7 | h7 · ⌀16: 0/−0.018 | internal flushing bore ⌀7.0 |
| ELEB-TUB-18 | 18 | 140 | ⌀8 | h7 · ⌀18: 0/−0.018 | internal flushing bore ⌀8.0 |
Prices are for approved members.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. Deviations (mm) are given for the nominal diameter according to the ISO 286-2 tables; thread tolerances (6g/6H) are to ISO 965. For custom sizes/tolerances, contact us with the part code.
Manufacturing Scope
Tube Electrode (Bored) is a Electrodes & EDM Tips family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀3–18 mm, lengths 40–140 mm, standard material Brass (also steel, stainless steel or aluminium). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀18 mm bar stock; its longest variant is ELEB-TUB-18 at 140 mm. Besides turning, the family requires axial drilling (⌀1–8 mm). All of it is completed in a single setup, without the part leaving the machine.
The most slender variant is ELEB-TUB-03: 40 mm long at ⌀3 mm, a length-to-diameter ratio of 13.3. This ratio is the very reason sliding-head lathes exist. The guide bushing supports the bar immediately beside the cutting point, so there is no deflection; the same part chatters and drifts in diameter on a conventional lathe.
Variants are machined to h7 tolerance; the smallest is ELEB-TUB-03 (⌀3 mm) and the largest ELEB-TUB-18 (⌀18 mm). The family includes bored variants. Custom sizes, tolerances or materials are produced to the part code on request.
Need a size that isn't listed? We machine to your drawing — CNC contract machining. How these parts are made: What is a Swiss-type lathe?
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