Hole Saw Abraboro Bimetal HSS-Co 121 x 38 mm AB30121000

Abraboro Bimetal HSS-Co hole saw with a 121 mm diameter and 38 mm cutting depth is designed for making circular openings in metal and other hard materials. Manufactured from HSS-Co bimetal, the cutter combines high-speed steel with cobalt alloy to increase wear resistance and maintain cutting performance under elevated temperatures. The tool is intended for professional and workshop use and requires a compatible arbor and pilot drill for safe, precise operation.

Advantages

The bimetal construction provides enhanced durability compared with standard high-speed steel by improving toughness and heat resistance. Precision-cut teeth ensure efficient material removal and reduce the risk of burrs on finished holes. Designed for repeated use in demanding environments, the hole saw offers stable cutting performance when paired with appropriate arbors and drilling machines. Its 38 mm cutting depth allows for deeper through-cuts and thicker workpieces than shallow hole saws.

Suitable for

• Cutting circular holes in metal sheets and steel plates
• Plumbing and HVAC installations requiring pipe or duct penetrations
• Electrical and cable routing through metal panels
• Workshop and fabrication tasks involving stainless or alloy steels (with correct speeds and lubrication)

Key specifications

• Cutting diameter: 121 mm
• Cutting depth: 38 mm
• Material: HSS-Co bimetal (high-speed steel with cobalt)
• Application: Metalworking, steel, and other hard materials
• Intended mounting: Use with compatible arbor and pilot drill

How to use

Securely fit the hole saw onto a compatible arbor and install the correct pilot drill for accurate centring. Clamp the workpiece to prevent movement and set the drilling machine to an appropriate speed for HSS-Co cutters and the specific material. Apply a cutting fluid or lubricant when cutting steel or other hard alloys to reduce heat and extend tool life. Begin drilling with light pressure until the pilot establishes the hole, then increase pressure gradually, allowing the saw to cut without forcing. Clear swarf regularly and back the tool out periodically to improve chip evacuation and cooling.

Usage recommendations

For prolonged tool life, use reduced cutting speeds and constant lubrication when working with stainless or hardened steels. Inspect the arbor connection and pilot drill before each use to ensure correct alignment. Replace the pilot or arbor if excessive runout or wear is detected to maintain hole accuracy and operator safety.