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Description
Technical data for the drill bit for metal, Ø34 mm, with reduced shank
| Technical data | |
|---|---|
| Working diameter of drill d | Ø34 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 Ø34 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 | 131 | 66 |
| KCast iron | 10-18 | 0.25 | 94 | 47 |
May be useful
Cutting parameters calculator
Ø34 mm HSS reduced-shank metal drill bit – a tool for demanding production applications
Industrial 34 mm diameter drill bit with a reduced shank made of high-speed steel (HSS) is a solution for the most demanding production processes. The shank, reduced to 12.7 mm (half an inch), allows immediate mounting in standard holders without additional components. The product is designed for industrial service facilities, structural steel fabrication plants, and heavy machinery repair shops.
Key features of the Varel Ø34 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
The reduced-shank design eliminates the mounting difficulties typical of larger-diameter tools. The polished working surface effectively dissipates heat from the cutting zone, ensuring stable operation during extended use in series production and emergency repairs.
Frequently asked questions
This tool is primarily intended for S235 and S355 structural steels with a hardness not exceeding 35 HRC, as well as cast iron, aluminum, and brass. It should not be used in steels hardened above the stated hardness or in high-chromium grades.
Drill bits with diameters exceeding 30 mm generate a great deal of heat during cutting. Using suitable cutting fluids can extend drill bit life by up to 60 percent and significantly improve the dimensional accuracy of the holes produced.
When machining S235 steel, we recommend a speed of 140-205 rpm, while for S355 the range is 95-155 rpm. Exceeding these parameters causes excessive heat buildup and accelerated dulling of the cutting edges.
Product accessories
Tapered countersink 37/90 DIN 335 C HSS
Reference: 0000004108 In stock > 10 items
€32.11
€39.49 brutto
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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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