- Thread cutting tools
- Drills to remove jammed taps
- Hand taps
- Machine taps "M"
- "M" - Through hole
- "M" - Blind hole
- Machine taps "MF"
- "MF" Through hole
- "M" - Blind hole
- Machine taps "G"
- Forming taps
- Forming taps "M"
- Forming taps "MF"
- Thread milling cutters
- Solid carbide threading tools
- Threading dies
- Accessories
- Drills HSS & HSSE
- NC center drills
- NC center drills 90°
- NC center drills 120°
- Center drills
- Center drills Form A
- Center drills Form B
- Center drills Form R
- Drills acc. to DIN
- DIN 338
- DIN 340
- Drills acc. to company standard
- Sets of drills
- Step drills
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- NC center drills
- NC center drills 90°
- NC center drills 120°
- NC center drills 142°
- Center drills
- Step drills
- Drills acc. to DIN
- DIN 1897
- DIN 338
- Company std.
- High performance drills 3xd - 15xd, Uni
- 3xd
- 5xd
- 8xd
- 12xd
- 15xd
- High performance drills 3xd - 8xd, Inox
- 3 xd
- 5 xd
- 8 xd
- Deep hole drills
- High performance drills HRC
- Aluminium drills
- Drill reamer
- Insert drills
- Countersinks and reamers HSS / HSSE
- Countersinks
- Countersinks 90°
- Countersinks 60°
- Reamers
- Reamers H7
- Reamers 1/100
- Solid carbide countersinks and reamers
- 8-fold-tools
- Countersinks
- Deburrer
- Deburrer 45°
- Deburrer 60°
- Deburrer 90°
- Reamers
- Reamers H7
- Reamers 1/100
- HPC/TPC-solid carbide end mills
- HPC Superstar
- Plunge milling cutters
- Trochoidal milling cutters
- Solid carbide end mills
- Inox
- Universal
- Unispecial
- Roughing end mills
- Aluminium
- Mould making
- HSSE end mills
- 2-flute cutters
- 3-flute cutters
- 4-flute and multiple-flute cutters
- Roughing end mills
- Grooving cutters and T-slot cutters
- Angle cutters
- Profile end mills
- Shell end mills
- HSS & Solid carbide slitting saws
- Solid Carbide
- HSS
- Regrinding
HSS / HSSE NC-Center drills 90°, 120°
NC spot drills for precise spot drilling of workpieces
In industrial mass production, CNC and NC machines are commonly used. To ensure high precision when spot drilling for threaded holes or other types of bores, the drill bit must be accurately positioned on the workpiece. However, standard twist drills and metal drills often tend to drift. While center drills are typically used for pre-drilling in manual applications, specialized NC spot drills have proven effective for machine-based NC production. These drills differ from center drills at first glance by the absence of a centering point, which is unnecessary when machine tools offer very high geometric rigidity. This is generally the case with NC machines and milling machines in machining centers and industrial production. Numerically controlled machines do not require a center drill but instead use an NC spot drill. This also shortens the spot drilling paths in mass production processes. However, NC spot drills are not suited for deep drilling, as they lack the necessary guide chamfers and are generally very short in length. An NC spot drill is used primarily for centering and countersinking stable and precise bores on milling machines, boring mills, and NC machines.
NC spot drills in HSS and HSSE versions from Nachreiner
Our range includes NC spot drills for NC machines in various sizes and versions. While HSS spot drills are suitable for most common applications, we also offer HSSE variants for high-strength steels and other robust materials. These HSSE drills contain a five percent cobalt alloy that provides greater strength and typically longer tool life under normal conditions. The ideal version for your needs depends on the materials being drilled. With HSSE, for example, you can drill alloyed and unalloyed steels with higher strength, as well as other alloyed and unalloyed metals and certain plastics.
Choosing the right tip angle for spot drill sets
Our range also includes complete NC spot drill sets. Besides the diameter, it is essential to consider the correct tip angle. In NC applications, the most common tip angles are 90 or 120 degrees. If you require specialized versions or specific coatings for working with particular materials, we can provide custom solutions upon request. Please contact us directly so we can understand your specifications and offer you an appropriate proposal.
Applications for Nachreiner NC spot drills
Our precise spot drills are commonly used in industrial manufacturing standard procedures, such as:
- Spot drilling and countersinking for threads
- Centering and spot drilling for twist drills
- Use on NC machines, boring mills, or milling machines
Advantage: With an NC spot drill, you can drill directly into solid material, allowing CNC and NC machines to bypass the need for countersinking with a conical countersink in most cases. This is primarily due to the 90 or 120-degree tip design of the spot drill.