20×75mm TCT Core Drills With Universal Shank

Product Overview

This 20mm diameter, 75mm cutting depth TCT annular cutter features a universal shank, compatible with most magnetic drill presses. Tungsten carbide tipped teeth deliver sharp, clean cuts on steel, stainless steel and structural metal. Smooth spiral flutes ensure fast chip evacuation, reducing heat and extending tool life. Ideal for fabrication, shipbuilding, engineering and on-site metal hole drilling.

Product Specifications

Key Features

• Carbide tips that hold their edge — Brazed tungsten carbide cutting edges resist abrasion and high heat, delivering long tool life in stainless steel, wear plate and other hard-to-machine grades.
• Universal 19.05 mm shank — Standard 3/4″ Weldon shank with dual flats fits most magnetic drill presses, radial drills and CNC holders — one SKU, no adapters.
• 75 mm depth in a single pass — Cut through thick base plates, flanges and beams without step drilling. Consistent 20 mm holes, no pilot hole required.
• Burr-free, ream-like finish — The annular geometry produces a clean, close-tolerance bore that often needs no deburring or reaming before tapping or bolting.
• Low spindle load — Cutting only a ring of material reduces thrust and torque, extending the life of smaller magnetic drills and keeping the magnet firmly seated.
• Consistent, inspectable quality — Hardened body, ground flutes and 100% runout check. Batch traceability and OEM laser marking available on volume orders.

Application Fields

One cutter, most of the holes on site — this is the size that gets reached for first on structural and fabrication work.

• Structural steel beams, columns and base plates
• Stainless steel 304 / 316 plate and tube sheets
• Bridge, rail and heavy equipment fabrication
• Plant and pipeline construction, flange drilling
• Shipbuilding and offshore steel structures
• Cast iron, aluminium and wear-resistant plate
• Magnetic drill and radial drill operations
• MRO and on-site maintenance drilling

Operation Notes

• Use proper cutting fluid for cooling and lubrication during drilling.
• Check clamping condition before operation for safety.
• Recommended for metal plate & tube drilling, not suitable for non-metal or ultra-hard alloy materials.

Q1: Can you produce non-standard large diameter annular cutters?

A: Yes. We support custom manufacturing. Our TCT annular cutters can reach a maximum cutting diameter of 250mm. Send your drawings and requirements for quotation.

Q2: Which magnetic drills fit this cutter?

A: 19.05 universal shank, compatible with most standard magnetic drill machines.

Q3: What materials can this TCT annular cutter drill?

A: Carbon steel, alloy steel, structural steel, cast iron.

Product Specifications for Standard Sizes:

*Please contact us if you are looking for the special non-standard TCT annular cutters. We can design and make special non-standard TCT annular cutters according to client's drawings.

Shank Selection Guide

Weldon shank	Universal Shank	FEIN Quick-In Shank