Twist Drill Bits Bohrcraft 1100, Ø4.6–8.7 mm, HSS, Roll Forged

Bohrcraft 1100 Twist Drill Bits are a series of twist drill bits engineered for precise and reliable drilling in metal materials. At the forefront of the range, these drill bits are produced from high-speed steel (HSS) and adhere to the DIN 338 standard, ensuring dimensional consistency and uniform machining quality.

Diameter range from 4.6 mm to 8.7 mm accommodates diverse technical needs in mechanical engineering, industrial maintenance, and manufacturing. Roll-forged manufacturing process enhances the structural stability of each drill bit.

The spiral flute design is optimized for chip evacuation, reducing friction and minimizing the risk of chip clogging during deeper drilling operations. With clearly defined overall lengths (L1) and working lengths (L2) for each part number, users can select the correct drill size for their specific machine or application requirements. Standard packaging is typically 10 pieces per box, with some larger sizes packed in sets of 5, supporting both workshop and bulk purchasing needs.

Bohrcraft 1100 Twist Drill Bits

Technical Specifications and Construction

The Bohrcraft 1100 twist drill series offers a comprehensive selection of sizes to meet the demands of metal drilling tasks. Each drill is manufactured from HSS and follows the DIN 338 standard, ensuring compatibility with a wide range of drilling machines and fixtures.

• Diameter range: 4.6 mm – 8.7 mm
• Overall length (L1): 86 mm – 133 mm
• Working length (L2): 52 mm – 87 mm
• Material: High-speed steel (HSS)
• Standard: DIN 338
• Manufacturing method: Roll forged
• Packaging: 10 pieces/box (some sizes 5 pieces/box)

These specifications allow for precise selection based on the required hole diameter and depth. The roll-forged process provides a cost-effective option for general-purpose metal drilling while maintaining consistent quality across the range.

Spiral Flute Design and Performance

The spiral flute geometry of the Bohrcraft 1100 series is tailored to facilitate rapid chip removal and maintain drilling stability. This design helps prevent chip jamming, especially when drilling deeper holes in steel and other metals.

• Optimized spiral angle for efficient chip evacuation
• Reduced friction and heat generation
• Stable drilling performance in standard metalworking operations

The combination of HSS material and spiral flute design ensures that each drill bit can handle common drilling tasks in workshop and industrial environments, supporting both manual and automated drilling setups.

Common Applications

Bohrcraft 1100 twist drill bits are widely used in mechanical engineering, equipment assembly, industrial maintenance, and repair workshops. They are suitable for use with bench drills, handheld electric drills, and automatic drilling machines when accurate hole placement in steel, alloys, or other metals is required.

• General metalworking and fabrication
• Maintenance and repair operations
• Industrial production lines
• Workshop toolkits

The broad diameter and length range ensures compatibility with various drilling machines and supports a wide array of technical requirements.