EXTOL INDUSTRIAL step drill with chip breaker, 4–22mm/in 2mm steps, HSS-Co 8701192
EXTOL INDUSTRIAL step drill with chip breaker, 4–22mm/in 2mm steps, HSS-Co 8701192
The EXTOL INDUSTRIAL step drill bit is a tool for precise drilling in metal and plastic. Thanks to its conical shape and steps ranging from 4 to 22mm in diameter, you can easily create holes of various sizes without needing to change tools. The drill bit is particularly suitable for working with steel sheets, pipes and profiles up to 4mm thick. The HSS-Co material with a TiAlN coating ensures high durability and a long service life, even when drilling into alloys and stainless steel.
Key features of the EXTOL INDUSTRIAL 4-22mm HSS-Co step drill bit
- Designed for drilling alloys, stainless steel and steel sheets up to 4mm thick
- Made from HSS-Co high-speed steel with 5% cobalt content
- TiAlN surface coating for protection at high temperatures
- Stepped design for smooth drilling without material deformation
- Three-flat cylindrical shank with an 8mm diameter for a secure grip
- Can be repeatedly sharpened
- Drilling diameter of 4–22mm in 2mm increments
- Total length of 81mm
Material and construction for demanding use
The drill bit is made of HSS-Co high-speed steel, which offers increased hardness and heat resistance due to its cobalt content. The bit also features a TiAlN (titanium aluminium nitride) coating approximately 3μm thick, which protects the tool from wear at high operating temperatures and extends its service life. The special three-flat shank prevents slipping in the chuck and contributes to precise power transmission.
Specifications
Specifications
Features
Packaging
| Code: | EXChobb017 |
| Warranty: | 24 months |
| Manufacturer information |
Madal Bal a.s., 760 01 Zlín, Bartošova 40, 577 599 777, [email protected] 
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