Σετ τρυπανιών σπείρας Bosch HSS PointTeQ 25 τεμ.

The Bosch HSS Twist Drill Bit PointTeQ 25-piece set contains high-speed steel drill bits with sizes from 1 mm to 13 mm, manufactured to DIN 338. The set is designed for precision drilling in a variety of materials using a cylindrical shank (shank diameter equals drill diameter) and is suitable for use in drill stands and drill drivers. The PointTeQ tip with a 135° angle provides a self-centering start, increased drilling rate, reduced heat generation and prolonged tip sharpness, while the black-oxide coated flutes aid fast chip removal. The bits are Type N (standard flute angle) and have an elastic body construction that reduces the risk of breakage, particularly for diameters below 6 mm.

Advantages

The PointTeQ tip design enables fast, self-centering drilling starts and maintains tip sharpness for continuous durability. Increased drilling rate results in less heat and wear. Black-oxide coated flutes improve chip evacuation. The cylindrical shank allows easy mounting in drill stands and handheld drill drivers, and the elastic body construction lowers breakage risk for small-diameter bits. Manufactured to DIN 338 for consistent geometry and quality.

Suitable for

• Drilling clearance and pilot holes in alloyed and non-alloyed steel
• Drilling in non-ferrous metals (aluminium, copper, brass)
• Drilling in cast steel and cast iron
• Drilling in plastics
• Use in drill stands and handheld drill drivers

Key specifications

• Brand: Bosch
• Set size: 25 pieces
• Diameter range: 1 mm to 13 mm
• Material: High-speed steel (HSS)
• Tip: PointTeQ, 135°
• Flute coating: Black oxide
• Shank type: Cylindrical (shank = drill diameter)
• Standard: DIN 338
• Flute type: Type N
• Recommended rotation: Right-hand

How to use

Select the appropriate drill bit size for the required clearance or pilot hole. Secure the workpiece and mark the drilling point. Mount the bit in the drill chuck so shank and chuck are fully engaged. Use steady feed and the correct speed for the material—lower speeds for harder metals, higher speeds for softer metals and plastics. Apply moderate pressure and allow the PointTeQ tip to self-center; withdraw periodically to clear chips if drilling deep holes. For precision work use a drill stand; for general tasks use a handheld drill driver.

Recommendations

Use cutting fluid when drilling alloyed or tough steels to reduce heat and extend bit life. Replace worn bits to maintain clean starts and accurate hole sizes. For hole sizes below 6 mm handle with care to avoid side loads that can cause breakage despite the elastic body design.