RUKO GmbH SPB-DIN1869-4.2mm-Serie-2 HSS-G Morse Taper Shank Twist Drill Bit, 4.2 mm, DIN 1869, Series 2

The RUKO SPB-DIN1869-4.2mm-Serie-2 is a precision ground twist drill bit with a Morse taper shank, specifically engineered for deep hole drilling in demanding industrial applications. Unlike standard straight-shank drills, its Morse taper design ensures secure, self-locking engagement with machine spindles, reducing slippage and improving concentricity under heavy loads. Manufactured from HSS-G (high-speed steel, ground) to DIN 1869, this drill bit delivers reliable performance and consistent hole quality across a wide range of materials.

Highlights

• Morse taper shank (MK1) for secure machine mounting and enhanced torque transmission
• Ground from solid HSS-G for superior hardness and wear resistance
• Type N flute profile with 118° point angle for efficient chip evacuation in steel and cast iron
• Bright, ground surface finish reduces friction and improves cutting performance
• Right-hand cutting direction suitable for standard drilling operations

In daily use

With a diameter of 4.2 mm and an overall length of 180 mm, this drill bit is ideal for producing deep, precise holes in steel, cast steel, alloyed and unalloyed materials, grey cast iron, malleable cast iron, sintered iron, nickel silver, graphite, non-ferrous metals, and plastics. The 110 mm flute length allows for extended reach, while the h8 tolerance ensures consistent hole sizing. The Series 2 designation indicates a medium length, balancing rigidity and accessibility for a variety of machining setups.

Full specifications

• Drill Standard: DIN 1869
• Material: HSS-G (High-Speed Steel, Ground)
• Drill Type: Twist Drill Bit
• Application: Deep Hole Drilling
• Diameter: 4.2 mm
• Tolerance: h8
• Shank Type: Morse Taper Shank
• Morse Taper Size: MK1
• Overall Length (L1): 180 mm
• Flute Length (L2): 110 mm
• Point Angle: 118°
• Flute Type: Type N (Normal Helix Angle)
• Surface Finish: Bright / Ground
• Series: Series 2 (Medium Length)
• Cutting Direction: Right-hand cutting
• Manufacturing Process: Ground from solid material
• Suitable Materials: Steel, Cast Steel, Alloyed/Unalloyed Materials, Grey Cast Iron, Malleable Cast Iron, Sintered Iron, Nickel Silver, Graphite, Non-ferrous Metals, Plastics
• Packaging Unit: 1 piece

Final note

RUKO GmbH is a trusted manufacturer of precision cutting tools, and this drill bit exemplifies their commitment to quality and performance in industrial drilling applications.