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Description
Technical data of metal drill fi 0.7
| Technical data | |
|---|---|
| Working diameter of drill d | fi 0,7 mm |
| Overall length l1 | 24 mm |
| Length of working part l2 | 7 mm |
- Drill bit made according to DIN-338
- Possible drilling to a hardness of 35 HRC
- Blade angle of 118 degrees suitable for drilling in steel, cast steel
- Made of the best grade of high speed steel HSS ( High speed steel )
- Makes a hole in h8 tolerance
- Low roughness of the hole
Cutting parameters of drill fi 0,7 mm HSS NWKa
| ISO symbol | Material | Cutting speed Vc [m/min] | Feed per revolution f [mm] | Revolutions n [obr/min] | Total feed rate [mm/min] |
|---|---|---|---|---|---|
| P | Steel | 14-25 | 0,05 | 6369 | 318 |
| K | Cast iron | 10-18 | 0,05 | 4550 | 228 |
May be useful
Cutting parameters calculator
Drill fi 0.7 with cylindrical shank
The 0.7 mm HSS DIN 338metal drill bit is designed for precision micro-diameter machining in structural steels, cast iron and non-ferrous alloys; it also works well as a fi 0.7 mm metal drill bit in workshop applications, providing a stable cutting path and dimensional retention in IT12 grade.
The nominal diameter is 0.7 mm. The 118-degree tip angle facilitates centering and even loading of the blades, and the helical, precision-ground grooves ensure continuous chip evacuation in the right cutting direction. A core of high-purity homogeneous high-speed steel increases wear resistance and edge stability. The length execution corresponds to the normal length according to DIN 338; under these conditions, when drilling as a fi 0.7 mm drill bit for steel, it is easier to maintain the workshop diameter tolerance with high speed, micrometer feed, rigid clamping and emulsion or oil mist cooling. The drills are designed for conventional lathes, milling and drilling machines, as well as specialized computer-controlled numerical control machine tools.
- Stable centering - the 118-degree geometry reduces drift at the entrance and organizes the drilling path.
- Smooth hole surface - polished chip channels reduce friction, promoting low wall roughness.
- Edge resilience - homogeneous high-speed steel stabilizes durability in unit and short-run cycles.
- Repeatability of IT12 grade - dimensional maintenance is supported by fi 0.7 mm metal drill with properly selected speeds and feeds and rigid clamping.
Compliance with DIN 338 facilitates installation in standard chucks, and the holes obtained qualify for IT12 workshop fits according to EN ISO 286, with predictable diameter, alignment and clean exit edge.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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