Which materials can you cut with this diamond disc?

You can cut metals including steel, stainless steel, cast iron, rebar, sheet metal, aluminium, and non-ferrous metals.

Which machines are compatible with this disc?

It fits angle grinders and cut-off saws designed for 230 mm discs with a 22.23 mm bore.

What is the main advantage over bonded abrasive cut-off wheels?

It maintains its full diameter until the last cut, delivers over 1,000 cuts, and creates significantly less dust.

Does this diamond disc have an expiration date?

No, unlike bonded abrasive discs, this solid steel disc does not expire when stored under proper conditions.

Is this disc suitable for wet or dry cutting?

This diamond cutting wheel is designed for dry cutting applications.

DEWALT DT40255-QZ EXTREME METAL cut-off wheel metal 230x22.23x2.1mm

Name: DEWALT DT40255-QZ EXTREME METAL cut-off wheel metal 230x22.23x2.1mm
Brand: DEWALT
SKU: 02889100
Price: 27.8 EUR
Availability: PreOrder

Supplier number: DEWALT DT40255-QZ | EAN 5035048545355

Recommended Retail Price €62.19

27.80 tax incl.

€22.97 excl. VAT (incl. all environmental contributions)

On order: delivered from 19/10/2026

Delivery by DHL

✆ Talk to a specialist

Enduring metal cutting with Dewalt

Practical benefits

Extended cutting service life: Advanced diamond technology allows you to complete over 1000 cuts across tough metals without rapid wear.
Consistent full cutting depth: The solid steel body maintains its 230 mm wheel diameter right down to the final cut.
Versatile multi metal performance: You cut through steel, stainless steel, cast iron, and aluminium while generating significantly less airborne dust.

In a nutshell

The right choise for

Cut through tough metals with continuous power using the Dewalt DT40255-QZ Extreme Metal diamond cutting disc. Unlike conventional bonded abrasive wheels that shrink as they wear, this solid steel wheel maintains its full 230 mm diameter for a consistent cutting depth from start to finish. Its advanced diamond edge delivers over 1000 cuts across steel, stainless steel, cast iron, rebar, and non-ferrous metals. You also benefit from a cleaner workspace with significantly less airborne dust. Featuring a 22.23 mm bore and a 2.1 mm thickness, it is designed for reliable dry cutting on your angle grinder.

Product information FAQ

€27.80

tax incl.

Key features according to our expert

(Disc) diameter: 230 mm
Connection size (disc): 22,2 mm
Mounting (disc): Bore
Application (disc): Cutting
For material: Brick
Thickness: 2,1 mm
Product Range: Dewalt EXTREME

Product description

EXTREME METAL cut-off wheel metal 230x22.23x2.1mm

Features

1000+ cuts : Extreme Diamond Edge is designed with metal cutting diamonds bonded to the surface of the wheel using patented technology
Improved safety : Extreme Diamond Edge is made of solid steel which significantly reduces the risk of breakage
No shelf life: unlike bonded abrasives, Extreme Diamond Edge will not expire as long as it is stored under the right conditions
Diameter retention: because the diamond cutting edge does not wear, Extreme Diamond Edge retains the original wheel diameter until the very last cut
Less dust, better workspace: Because Extreme Diamond Edge does not wear down, fewer dust particles are released into the air as well
One wheel - multiple metals: Extreme Diamond Edge works in a wide range of materials, including steel, stainless steel, cast iron, rebar, sheet metal, aluminium and non-ferrous metals

All Features

(disc) diameter: 230 mm
Connection size (disc): 22,2 mm
Mounting (disc): Bore
Application (disc): Cutting
For material: Brick
Thickness: 2,1 mm
Grind: 1,5 mm
Pitch: Extreme
Application material: 10,0 mm
Diameter: 230,0 mm
Segment height: 22,23 mm
Product range: Dewalt EXTREME

Brand DEWALT
02889100
EAN 5035048545355
Supplier number DEWALT DT40255-QZ

Frequently asked questions about this product

Answered by specialists

Which materials can you cut with this diamond disc?: You can cut metals including steel, stainless steel, cast iron, rebar, sheet metal, aluminium, and non-ferrous metals.
Which machines are compatible with this disc?: It fits angle grinders and cut-off saws designed for 230 mm discs with a 22.23 mm bore.
What is the main advantage over bonded abrasive cut-off wheels?: It maintains its full diameter until the last cut, delivers over 1,000 cuts, and creates significantly less dust.
Does this diamond disc have an expiration date?: No, unlike bonded abrasive discs, this solid steel disc does not expire when stored under proper conditions.
Is this disc suitable for wet or dry cutting?: This diamond cutting wheel is designed for dry cutting applications.