Hole saw Abraboro bimetal HSS-Co 51 x 38 mm AB30051000

Hole saw Abraboro bimetal HSS-Co 51 x 38 mm is a cutting tool designed for drilling circular holes with a diameter of 51 mm and a cutting depth of 38 mm. Made from high-speed steel alloyed with cobalt (HSS-Co), the core construction combines a bimetal cutting edge with a robust backing to provide improved wear resistance and higher red hardness for sustained performance under heat. The tool is intended for use in metalworking and general construction tasks where precise hole cutting in thin sheets, profiles, and non-ferrous and mild steels is required.

Advantages

The bimetal design offers a durable cutting edge and a tougher body to resist damage during drilling. Cobalt-alloyed HSS increases hardness at elevated temperatures, reducing premature dulling when cutting harder materials. The 51 mm diameter and 38 mm cutting depth allow for through or partial-hole applications in a wide range of sheet and profile thicknesses. The saw is compatible with common arbor systems and designed for reliable chip evacuation and reduced vibration when used with appropriate speeds and feed rates.

Suitable for

• Drilling holes in thin steel sheets and metal profiles
• Creating openings in non-ferrous metals such as aluminium and copper
• Installation tasks requiring consistent 51 mm holes (electrical boxes, piping passes)
• General sheet metal fabrication and repair work

Key specifications

• Cutting diameter: 51 mm
• Cutting depth: 38 mm
• Material: high-speed steel with cobalt alloy (HSS-Co)
• Construction: bimetal cutting edge bonded to supporting body
• Recommended for use on thin metal sheets, profiles and non-ferrous metals

How to use

Fit the hole saw onto a compatible arbor and secure it to a drill with sufficient power and speed control. Mark the center point and, if available, use a pilot drill or centering bit to ensure accurate positioning. Begin drilling at low speed to establish the cut, then increase speed within recommended ranges for HSS-Co tools while maintaining steady pressure and avoiding excessive feed that could overload the teeth. Periodically withdraw the saw to clear chips and reduce heat build-up. Use cutting fluid when working with steel or thicker materials to improve cutting performance and tool life.

Usage recommendations

Use appropriate personal protective equipment, clamp workpieces securely, and select drill speeds and cutting fluid suitable for the material being cut. For prolonged or heavy-duty cutting, allow the tool to cool between passes and replace worn arbors or centering bits to maintain accuracy and safety.