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Description
Technical data for the drill bit for metal, Ø23 mm, with reduced shank
| Technical data | |
|---|---|
| Working diameter of drill d | Ø23 mm |
| Overall length l1 | 152 mm |
| Flute length l2 | 65 mm |
| Shank diameter - 1.2" | 12.7 mm |
- 1/2 inch reduced shank – mounting without adapters
- Drilling in steels up to 35 HRC
- High-quality HSS steel
- IT11 tolerance (±130 µm)
- Ground surface – low roughness
Cutting data for the Ø23 mm HSS NWKa drill bit
| Material | Cutting speed Vc [m/min] | Feed per revolution f [mm] | Spindle speed n [rpm] | Total feed rate [mm/min] |
|---|---|---|---|---|
| PSteel | 14-25 | 0.2 | 194 | 39 |
| KCast iron | 10-18 | 0.2 | 138 | 28 |
May be useful
Cutting parameters calculator
Ø23 mm reduced-shank HSS metal drill bit – an efficient solution for industry
Specialized Ø23 mm drill bit with a reduced shank made of high-speed steel (HSS) is a tool designed for demanding industrial applications. The reduced shank with a diameter of 12.7 mm (half an inch) allows easy installation in standard drill holders. The product is developed for professional toolrooms, manufacturing plants, and metal machining shops.
Main advantages of the Varel Ø23 mm reduced-shank drill bit
- Half-inch reduced shank – allows direct clamping in drill presses and magnetic drills without additional intermediate components
- IT11 standard compliant with ISO 286-1 – holes produced with this drill bit achieve a dimensional tolerance of ±105 µm, optimal for assembly applications
- High-precision grinding – minimizes resistance during operation and improves guidance accuracy in the material by 25 percent
- Designed for materials up to 35 HRC – effective machining of S235 and S355 structural steels, cast iron, and light alloys
- Quality backed by the Varel brand – a manufacturer known for precision in cutting tool manufacturing
The reduced-shank technology effectively eliminates the need to purchase additional reduction sleeves. Polishing the working surface reduces friction and operating temperature, allowing the drill bit to maintain its cutting performance even during extended use in production environments.
Frequently asked questions
This drill bit is intended for machining S235 and S355 structural steels with a hardness not exceeding 35 HRC, as well as gray cast iron, aluminum, and brass. We do not recommend use in steels hardened above 35 HRC or in corrosion-resistant high-chromium grades.
Using a coolant emulsion or specialized cutting oil is highly recommended with larger-diameter drill bits. Proper cooling can extend tool life by up to 60 percent while improving the quality of the resulting holes.
When drilling S235 steel, the suggested speed range is 190-270 rpm; for S355 steel, set 150-210 rpm. Excessive spindle speeds cause excessive tool heat buildup and rapid loss of cutting performance.
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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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