Step Drill Bit Set 4pc (4-12, 4-20, 4-32, 4-39) Aluminium GEKO G38506
Key information
Availability:Dostępny od ręki
Shipping time:immediately
Shipping cost:From 3.28 Euro
catalog number:G38506
Availability:
EAN code:5901477161575
Product condition:New, originally packaged
Guarantee:24 months of consumer protection
Weight:0,65 kg
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GEKO G38506 4-Piece Step Drill Bit Set
A complete set of four titanium-coated HSS step drill bits for drilling holes of various diameters in sheet metal and plastics. Diameter range from 4 to 39 mm in a single set.
Technical features
HSS high-speed steel with titanium coating
The HSS (high-speed steel) material resists wear and keeps the cutting edges sharp. The titanium coating (TiN) further increases surface hardness, reduces friction during drilling and extends tool life by 30-50% compared with uncoated drill bits.
2 mm step increments
Each drill bit has 2 mm steps with clear markings, so holes of the required diameter can be drilled accurately without changing tools. Simply stop drilling at the appropriate step to achieve the exact size.
Cylindrical shank
The standard-diameter cylindrical shank fits both keyless and keyed chucks in drills and drill drivers. It provides a secure grip and minimises runout during use, which affects the accuracy of the holes drilled.
Aluminium case
The sturdy aluminium case protects the drill bits from mechanical damage during transport and storage. Each drill bit has its own compartment, which makes it easy to keep the set organised and to find the right size quickly.
Technical specification
| Model | GEKO G38506 |
| Material | HSS high-speed steel with titanium coating (TiN) |
| Number of pieces | 4 step drill bits |
| Drill bit sizes | 4-12 mm, 4-20 mm, 4-32 mm, 4-39 mm |
| Step increments | Every 2 mm, with markings |
| Shank type | Cylindrical |
| Applications | Non-ferrous metals, thin-gauge steel sheet, plastics |
| Packaging | Aluminium case |
Applications
- Drilling holes in steel sheet up to 3 mm thick
- Working aluminium and non-ferrous metal sheet
- Enlarging existing holes without changing the drill bit
- Chamfering the edges of holes in sheet metal
- Drilling plastics and composites
- Assembly work on electrical and ventilation installations
- Working on car body panels
- Preparing holes for rivets and screws of various diameters
How to choose the right drill bit from the set
The choice of drill bit depends on the maximum diameter of the hole you need to make. The 4-12 mm bit is suitable for smaller holes, while the 4-39 mm bit lets you drill large holes in a single pass. Always start with the smaller diameter and increase it gradually, checking the size against the markings on the drill bit.
Use and maintenance
Before starting work, mark the centre of the hole with a centre punch or a small twist drill bit to stop the conical tip from slipping. When drilling sheet metal, low speeds (300-600 rpm) and moderate pressure are recommended to avoid overheating the material and the drill bit.
Step drill bits need regular cleaning to remove swarf and dust. After finishing work, wipe the surface of the drill bit with a dry cloth and, in the case of intensive use, apply a thin layer of protective oil. The titanium coating is corrosion-resistant, but prolonged contact with moisture can damage the base steel.
Storing the bits in the original aluminium case protects the cutting edges from blunting and damage. Avoid dropping the drill bits onto hard surfaces, as impact can chip the titanium coating or damage the geometry of the cutting edges.
Commercial information
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Client: Al...ns,date of purchase 04-03-2024 12:46
