Description
The Guhring Series 255 is a high-performance HSS (High-Speed Steel) Twist Drill designed for precision deep hole drilling. It is equipped with internal coolant ducts (oil holes) and features a Morse taper shank. This tool is specifically engineered for drilling in demanding materials such as steel, cast iron, and aluminium. Its robust construction makes it particularly suitable for unstable machining conditions where shock loads or vibrations may occur, providing high reliability in lower-performance or less rigid machinery.
Features:
- Internal Cooling System: Axial and radial coolant supply via Morse taper shank for superior lubrication.
- Self-Centering Geometry: 170° point angle with 90° center point for flawless hole entry.
- Vibration Resistance: HSS substrate engineered to withstand shock loads in varying environments.
- Steam-Tempered Finish: Oxide finish enhances chip evacuation and reduces cutting friction.
Specifications:
- Nominal Diameter: 40.0 mm
- Overall Length: 375.0 mm
- Flute Length: 148.0 mm
- Point Angle: 170°
- Shank Type: Morse Taper 3 (MT3/MK3)
- Material: HSS (High-Speed Steel)
- Coolant Supply: Internal (Axial/Radial)
