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Rapid Online - Rapid Electronics Ltd.£1.48Visit shop Heller 17793 1 0901 HSS-R Twist Drills DIN 338 RN 2.5mm - 2 Pack
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Amazon£4.99Visit shop Heller Tools 184502 "0901" Steel Hss Drill Bit, 0 V, Black, 1.0 mm, Set of 10 Piece
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This guide is for professionals and DIY enthusiasts working with unalloyed steels and other metals. The Heller Tools HSS-R 4.5mm Twist Drill Bit offers reliable performance and a long service life for daily drilling tasks, though it is specifically optimized for unalloyed steels. Key features include its durable HSS-R material, a precise 118° point angle for controlled entry, and consistent helix hardness for efficient chip removal. Each pack contains 10 drill bits, providing excellent value for common metalworking needs.
| Model Part Number | 18485 |
|---|---|
| Brand | Heller Tools |
These HSS-R drill bits are specifically designed for drilling holes in unalloyed steels. They are also suitable for cast iron, iron, and non-ferrous metals.
The service life is enhanced by the HSS-R material, continuous helix hardness, and the removal of wire edge at the taper. Proper usage and care will maximize their longevity.
No, these drill bits are designed for metal and are not suitable for drilling into wood or masonry materials. Using them on these materials can damage the bit and the workpiece.
DIN 338 RN specifies the standard for these types of twist drill bits, indicating a specific size, shape, and quality for precision metal drilling applications.
After use, clean off metal shavings and apply a light oil to prevent rust. Store them in a dry place and use cutting fluid during operation to prolong their life.
The point angle is 118°. This angle is standard for general-purpose metal drilling and helps in starting the hole cleanly and efficiently without excessive bit wander.
No, these specific drill bits (MPN 18485) are sold in a pack of 10 pieces.
Ensure you are using an appropriate speed for the material. Apply cutting fluid. Check if the drill bit is dull and needs replacement. Verify you are drilling into a compatible material (unalloyed steel, etc.).
Ensure the workpiece is securely clamped. Use a center punch to create a starting dimple before drilling. Reduce drilling pressure initially.
Reduce drilling pressure as the bit is about to break through the material. Ensure the drill bit is sharp. Consider deburring the hole with a countersink or file after drilling.
Too much pressure, incorrect speed, or drilling into a material harder than intended can cause breakage. Ensure the bit is properly aligned in the chuck and the material is suitable.
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