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Description
Technical data for the drill bit for metal, Ø35 mm, with reduced shank
| Technical data | |
|---|---|
| Working diameter of drill d | Ø35 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 Ø35 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 | 0.25 | 127 | 64 |
| KCast iron | 10-18 | 0.25 | 91 | 45 |
May be useful
Cutting parameters calculator
Ø35 mm HSS reduced-shank metal drill bit – an efficient tool for industrial machining
Advanced Ø35 mm HSS drill bit with a reduced shank is a tool developed for the most demanding industrial applications. The shank, reduced to a diameter of 12.7 mm (half an inch), fits directly into standard drill chucks. This solution is intended for machinery manufacturing plants, technical departments, and professional metalworking shops.
Technical data for the Varel Ø35 mm reduced-shank drill bit
- 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
Incorporating a reduced shank is a practical response to the needs of facilities with standard equipment. The smooth, ground working surface minimizes friction and temperature during operation, ensuring tool reliability in continuous production.
Frequently asked questions
This drill bit is used for machining S235 and S355 structural steels with a hardness up to 35 HRC, as well as gray cast iron, aluminum alloys, and brass. It should not be used in steels hardened above 35 HRC or in austenitic stainless steels.
Proper use of a machining emulsion or oil is essential to preserve the tool's properties. Cooling can extend drill bit service life by up to 60 percent while providing greater hole dimensional accuracy and surface quality.
For S235 structural steel, we recommend a range of 135-200 rpm, while for S355 steel, set 90-150 rpm. Excessive speeds result in excessive heat generation and rapid tool deterioration.
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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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