Annular Cutters

Achieve burr-free finished holes, without predrilling or stepdrilling – Faster and more accurate than twist drilling

Annular cutters

Benefits of the CS Unitec Cutter Design:

Precision-ground flutes provide efficient chip clearance, increasing drilling productivity and decreasing cutter breakage.

Double-action tooth geometry cuts, splits and ejects chips more efficiently,

increasing cutting speed
reducing tooth load
minimizing tool wear
lengthening cutter life

Engineered with a tapered inner wall for smooth, easy slug ejection.

Center hole for pilot pin accurately aligns the cutter, allows for internal lubrication and removes the slug.

Perfect drilling to close tolerances without runout. The result: a burr-free finished hole.

Your Choice of Unibroach® Cutter Materials:

6-Series HSS High-Speed Steel Cutters
8-Series ARMOR-PLATED TiAlN Cutters
9-Series TCT Hornet Tungsten Carbide-tipped Cutters
Cobalt Cutters
Large-diameter Hole Cutting – up to 5" dia. holes
Cutter Kits

Functions of Pilot Pin

1. Centering: The Pilot pin accurately centers cutter over area to be drilled.

2. Oiling: During drilling, the pilot pin retracts and allows internal coolant to reach the cutting teeth.

3. Ejecting: When hole is complete, the slug is automatically ejected from the cutter.

6-Series Unibroach® HSS High-Speed Steel Annular Cutters

High-speed steel for drilling 3x faster than twist drills

Fully ground HSS core drills
Ideal for heavy-duty use on-site or in the shop

Tool shank:	3/4" Weldon 1-1/4" Weldon

HSS Cutter Sizes

Cutting depth:	1"
Drilling Ø:	7/16" - 5"
Cutting depth:	2"
Drilling Ø:	7/16" - 5"
Cutting depth:	3"
Drilling Ø:	3/4" - 5"
Cutting depth:	4"
Drilling Ø:	3/4" - 5"

Metric cutters available on request. Unibroach™ Stack Cutters are available in diameters from 7/16" to 1-1/8" in 1", 2" and 3" depths. Drill multiple layers of steel without stopping to remove the center slug.

Get more information and view order numbers for 6-Series HSS Cutters.

8-Series ARMOR-PLATED Unibroach™ TiAlN Annular Cutters

TiAlN coating for up to 4x tool life, less friction and more power

Fully ground HSS core drills with TiAlN hard coating
At 90Rc hardness, ARMOR-PLATED Cutters are the state-of-the-art in hole cutting technology
Withstand higher working temperatures and prevent cold weld
Ideal for structural steel and hard metal

Tool shank:	3/4" Weldon 1-1/4" Weldon

ARMOR-PLATED TiAlN Cutter Sizes

Cutting depth:	1"
Drilling Ø:	7/16" - 2-1/16"
Cutting depth:	2"
Drilling Ø:	7/16" - 2-1/16"
Cutting depth:	3"
Drilling Ø:	3/4" - 2-1/16"

4" depth ARMOR-PLATED cutters and Metric cutters are available on request.

Get more information and view order numbers for 8-Series ARMOR-PLATED TiAlN Cutters.

9-Series Unibroach® TCT Hornet Tungsten Carbide-tipped Annular Cutters

Tungsten carbide-tipped for high-speed cutting

Sintered carbide core drills with Tungsten Carbide tips
Ideal for drilling steel with rust or paint
Will outlast High-speed Steel cutters

Tool shank:	3/4" Weldon 1-1/4" Weldon

TCT Hornet Tungsten Carbide-tipped Cutter Sizes

Cutting depth:	1" (1-3/8" depth for diameters larger than 1-1/2")
Drilling Ø:	5/8" - 2"
Cutting depth:	2-3/8"
Drilling Ø:	11/16" - 5-1/8"
Cutting depth:	3"
Drilling Ø:	13/16" - 5-1/8"

Metric cutters are available on request.

Get more information and view order numbers for 9-Series TCT Hornet Tungsten Carbide-tipped Cutters.

Unibroach® Cobalt Cutters

Unibroach® Cobalt Cutters are made with 5% cobalt to increase resistance to wear
Excellent results when drilling high-tensile steel and difficult-to-machine materials
Available with TiAlN coating upon request
3/4" shank is standard for cutters up to 3" dia.
Available for hole sizes up to 5" dia. – click here for sizes and ordering information