RUKO KEB-HSSCo-Mod.55 Twist Drill Bit 26.0 mm DIN 338 HSS-Co Split Point

Drilling large-diameter holes in tough, high-alloy steels demands a bit that stays sharp, cuts cleanly, and resists heat. The RUKO KEB-HSSCo-Mod.55-26.0mm answers that challenge with a cobalt-alloyed high-speed steel body, precision-ground from solid for consistent geometry and long service life.

Who is it for

Industrial machinists, metal fabricators, and serious workshop users who regularly drill stainless steel, acid-resistant steels, heat-resistant alloys, cast iron, bronze, and non-ferrous metals. The 26.0 mm diameter suits heavy-duty applications where standard bits fail.

Main features

• High-speed steel with cobalt (HSS-Co) for superior heat resistance and hardness
• Split point (self-centering) with 135° point angle for fast, accurate starts without walking
• Cylindrical shank, right-hand cutting, ground from solid to h8 tolerance
• Bright finish for clean chip evacuation and reduced friction
• DIN 338 geometry for reliable performance in industrial drilling

Specifications

• Drill Bit Type: Twist Drill Bit
• Material: High-Speed Steel with Cobalt (HSS-Co)
• Series: Mod. 55
• Drill Diameter: 26.0 mm
• Shank Type: Cylindrical Shank
• Standard: DIN 338
• Point Angle: 135°
• Point Type: Split Point (Self-centering)
• Cutting Direction: Right-hand
• Manufacturing Process: Ground from solid
• Tolerance: h8
• Application Materials: High-alloy steels, stainless steel, acid-resistant steels, heat-resistant steels, cast iron, bronze, non-ferrous metals
• Overall Length: 273 mm
• Working Length (Flute Length): 170 mm
• Surface Finish: Bright
• Recommended Use: Industrial drilling, workshop applications

Tips

Use cutting fluid or coolant when drilling stainless and heat-resistant steels to extend bit life. For best results, pre-drill a pilot hole with a smaller diameter bit and maintain steady feed pressure.