RUKO KEB-HSSCo-Mod.55-22,0mm Core Drill 22 mm Cutting Diameter, 30 mm Depth, Weldon Shank

With a 22 mm cutting diameter and a 30 mm cutting depth, this RUKO core drill delivers fast, precise holes in tough materials. Made from HSS-Co with 5% cobalt, it is engineered for high heat resistance and durability when working with steel, stainless steel, cast iron, and non-ferrous metals.

Overview

The RUKO Mod. 55 core drill (annular cutter) features a Weldon shank with a 19.0 mm (3/4 inch) diameter, making it compatible with magnetic drilling machines and pillar drills when used with an adapter. Its optimized chip evacuation and bright, uncoated finish contribute to burr-free, accurate holes and efficient cutting performance.

What stands out

• 5% cobalt HSS-Co construction for enhanced heat resistance and durability
• 22 mm cutting diameter with 30 mm cutting depth for deep hole drilling
• Weldon shank (19.0 mm / 3/4 inch) for secure mounting on magnetic drills
• Suitable for steel, stainless steel, cast iron, and non-ferrous metals
• Optimized chip removal for clean, burr-free holes

Technical details

• Material: HSS-Co (High-Speed Steel with Cobalt)
• Cobalt content: 5%
• Drill type: Core drill (annular cutter)
• Cutting diameter: 22.0 mm
• Cutting depth: 30 mm
• Shank type: Weldon shank
• Shank diameter: 19.0 mm (3/4 inch)
• Finish: Bright (uncoated)
• Product series: RUKO Mod. 55
• Recommended machines: Magnetic drilling machines, pillar drills (with adapter)
• Required accessory: Pilot pin (ejection pin)

Our verdict

A professional-grade core drill that combines cobalt toughness with precision geometry. Ideal for demanding metalworking tasks where clean, accurate holes and long tool life are essential.