- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
Technical data for the drill bit for metal, Ø29 mm, with reduced shank
| Technical data | |
|---|---|
| Working diameter of drill d | Ø29 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 Ø29 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 | 154 | 39 |
| KCast iron | 10-18 | 0.25 | 110 | 28 |
May be useful
Cutting parameters calculator
Ø29 mm HSS reduced-shank metal drill bit – a tool for the machining industry
Professional extra-long drill a 29 mm diameter drill bit with a reduced shank belongs to the category of high-performance HSS tools for metalworking. The 12.7 mm (half-inch) shank is reduced to allow direct mounting in standard chucks. The product is intended for metal manufacturing plants, technical departments, and workshops repairing industrial machinery.
Basic specifications of the Varel Ø29 mm drill bit
- Shank reduced to 1/2 inch – easy mounting in drill presses and magnetic drills, eliminating the need for adapters
- IT11 tolerance grade according to ISO 286-1 – drilled holes achieve an accuracy of ±130 µm, suitable for standard mechanical joints
- Precision grinding of the working surface – improves guidance accuracy in the material and reduces cutting resistance by one quarter
- Machining materials up to 35 HRC – effective in S235 and S355 steels, cast iron, and aluminum and brass alloys
- Quality guaranteed by the Varel brand – a trusted tool supplier for the mechanical engineering industry
The reduced-shank design provides a practical solution to the challenges of mounting larger tools in standard equipment. The polished surface minimizes friction and drill bit heating, maintaining performance even during extended use in production environments.
Frequently asked questions
This tool is primarily intended for machining S235 and S355 structural steels not exceeding 35 HRC, as well as cast iron, aluminum, and brass. It should not be used in steels hardened above 35 HRC or in austenitic corrosion-resistant grades.
Proper cooling and lubrication of the cutting zone are key to long drill bit life. Using cutting fluid can extend tool life by up to 60 percent while improving the dimensional accuracy and surface finish of drilled holes.
For S235 structural steel, we recommend a speed range of 165-235 rpm; for S355 steel, set 120-180 rpm. Excessive speed generates too much heat and rapidly degrades the cutting edges, significantly shortening drill bit life.
Product accessories
Countersink countersink 35/90 DIN 335 C HSS
Reference: 0000009536 In stock > 10 items
€34.74
€42.73 brutto
Reviews
No customer reviews for the moment.
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 |
Recommended for you
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.