HF-Tools Annular Cutter – Carbide Tipped, 50mm Cutting Depth, Universal Shank

HF-Tools Carbide Tipped Annular Cutter

The HF-Tools hollow drill bit — also known as a steel plate drill, magnetic drill bit, rail drill, or core bit — is engineered for precision hole-cutting in structural steel, bridges, shipbuilding, and complex drilling environments. This listing is for the carbide tipped variant with a 50mm cutting depth and universal shank, compatible with a wide range of imported and domestic magnetic drill machines and drilling equipment.

Specifications

• Material: Carbide tipped
• Cutting depth: 50mm
• Shank type: Universal (suits most magnetic drill presses)
• Pilot pin: 12mm
• Product length: 90mm

Recommended Cutting Speeds (RPM by bore diameter)

• Carbon steel & copper: 310–260 RPM (40–49mm) / 200–170 RPM (50–59mm)
• Alloy steel: 280–230 RPM (40–49mm) / 185–160 RPM (50–59mm)
• Cast iron: 480–400 RPM (40–49mm) / 380–310 RPM (50–59mm)
• Aluminium: 540–420 RPM (40–49mm) / 420–360 RPM (50–59mm)

Compatible Handle Types

• Right-angle handle — centres from the rig via two screws; vertical spindle insert
• Common handle — centres in drill will handle thimble; left to spindle
• Four-holes handle — main shaft clockwise turn ring; drill directly into material

Operations & Best Practices

• Always use cutting fluid during operation
• Reduce speed at the start and end of each drilling pass
• When overlapping holes, remove the first core before beginning the second
• Ensure workpiece is stable and secure before drilling
• Do not knock the blade drill bit against the casing to avoid damage

Safety

• Wear protective clothing and a helmet at all times
• Keep hands clear of the blade and material — both can scratch and cut
• Do not work alone on site
• Operate only in a secure, stable position

Certificate of Conformity supplied. Sharp Tools Make Good Work.