RUKO LOS-HSS-G41,0mm Twist Drill Bit 41.0 mm Morse Taper MT4 DIN 345

This RUKO twist drill bit is a ground HSS tool with a 41.0 mm diameter and Morse Taper MT4 shank, built for heavy-duty drilling in steel, cast iron, non-ferrous metals, and plastics. Unlike standard parallel-shank bits, the MT4 taper provides a self-locking fit in machine spindles, ensuring concentricity and torque transmission for large-hole drilling.

Highlights

• Ground from high-speed steel (HSS-G) for sharp cutting edges and long tool life
• Morse Taper MT4 shank for secure, self-holding mounting in drilling machines
• Right-hand cutting with 118° point angle for general-purpose use
• Conforms to DIN 345 for taper shank twist drills

In daily use

The 41.0 mm diameter and 150 mm working length allow deep hole drilling in structural steel, castings, and non-ferrous workpieces. The bright finish reduces chip adhesion, and the tapered core provides rigidity under high feed forces. The MT4 taper fits directly into matching machine spindles or reduction sleeves, eliminating the need for a drill chuck.

Full specifications

• Drill Bit Type: Twist Drill Bit
• Material: High-Speed Steel (HSS)
• Manufacturing Process: Ground (HSS-G)
• Drill Diameter: 41.0 mm
• Shank Type: Morse Taper
• Morse Taper Size: MT4
• Overall Length (L1): 250 mm
• Working Length (L2): 150 mm
• Point Angle: 118°
• Cutting Direction: Right-hand cutting
• Standard: DIN 345
• Surface Finish: Bright
• Tolerance: h8
• Number of Flutes: 2
• Application: General purpose drilling in steel, cast iron, non-ferrous metals, plastics
• Core Type: Tapered
• Helix Angle: Standard (approx. 25-30°)
• Packaging: Single unit

Final note

A robust taper-shank drill for industrial drilling tasks where precision and secure tool holding are essential.