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Unibor MML30 annular cutter 30mm diameter 50mm depth of cut silver steel

Unibor

Unibor MML30 30mm x 50mm - M2 pneumatic accessory

SKU CH-VMZC-RV4ZX

Metric HSS annular cutter for softer metals and mild steel with 50 mm depth of cut

  • 30 mm cutter diameter fits standard magnetic drill chucks
  • 50 mm depth of cut handles thick plate in one pass
  • HSS construction resists wear when cutting mild steel
  • Metric sizing simplifies selection for European tooling
  • Economical design keeps cost low for high-volume jobs

What it is and who it fits

The Unibor MML30 is a metric HSS annular cutter sized at 30mm by 50mm for magnetic drilling machines. It targets metalworkers who need an economical tool for softer metals and most mild steels. The 2 inch depth of cut suits through-hole work on plate and structural sections. It is not for buyers who need carbide tips for hardened alloys or high-volume production runs.

Thermals noise and power draw

Heat generation depends on the magnetic drill’s motor and the workpiece material rather than the cutter itself. Cutting softer metals and mild steels at appropriate feed rates keeps temperatures moderate during normal use. No decibel rating or power consumption figure is supplied for the accessory alone. It is not for operators who require published thermal limits or noise certifications for regulated environments.

Behaviour under sustained load

The high-speed steel teeth maintain cutting geometry through repeated passes in mild steel when coolant is used and feed pressure stays consistent. Extended sessions in softer metals show predictable wear without sudden edge failure. The cutter is not for continuous automated lines that demand carbide life spans or documented tool-life curves for predictive maintenance.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $77.99
Pricier than about 78% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameUNIBOR

Questions about this item

How do I fit the 30mm x 50mm annular cutter onto my magnetic drill?

Insert the M2 shank fully into the drill arbor, tighten the grub screws against the flats, then check alignment before cutting.

When will the 30mm cutter need replacing?

Replace it when the cutting edges dull, chips clog the flutes, or the 50mm depth of cut no longer clears cleanly.

What limits continuous cutting with this 30mm HSS tool?

Heat buildup in mild steel softens the high-speed steel, so cutting speed must drop once the cutter overheats.

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