Cut-Off Wheel — Thin Abrasive Cutting Disc for Metal

A cut-off wheel is a thin bonded abrasive wheel, normally reinforced, designed to cut on its edge. Instead of grinding across a surface, it is fed into the workpiece in a straight line and the abrasive removes a narrow kerf of material. It is used on portable angle grinders, on cut-off saws and chop saws, and on stationary cutting equipment, depending on the wheel specification. Cut-off wheels are consumables: they wear down in diameter as they cut and are replaced routinely.

Fabricators use cut-off wheels to cut sheet, plate, bar, angle, tube and structural section to length before welding. Installers and contractors use them for threaded rod, fasteners, rebar and site modifications. Maintenance and repair teams use them for dismantling and for cutting seized or damaged components. In each case, the cut is normally deburred or dressed afterwards with a grinding wheel, flap disc or coated abrasive before assembly or coating.

Wheel thickness is the main trade-off in cut-off work. A thinner wheel removes less material, so it generally cuts faster with less effort and puts less heat into the workpiece, which matters on thin sheet and on stainless steel where discolouration and heat input are a concern. A thicker wheel is more robust and better able to tolerate the side loading and rougher handling common on heavier structural cutting and site work. Choosing thickness therefore starts from the material thickness and the working conditions, not from a preference for one number.

Diameter must be within the range the tool and guard are designed for, and the arbor or centre hole must match the machine. A larger wheel gives more depth of cut but only on a tool rated for it. Wheels for portable grinders and wheels for stationary saws are specified differently and are not automatically interchangeable. Confirm the rated wheel size in your tool's instructions and state it in the enquiry so the correct wheel is quoted.

Wheels are formulated for different materials. General steel wheels are used for carbon and mild steel. Wheels specified for stainless steel are used where iron, sulphur and chlorine contamination must be controlled — a common requirement in food, pharmaceutical, architectural and pressure work. Wheels for non-ferrous metals, and wheels for masonry or stone, are separate specifications and are not selected for steel work simply because they are the same diameter. State the material in the enquiry so the specification matches the job.

Available specifications include wheel diameter, thickness, arbor or centre hole, abrasive type, reinforcement, intended machine type and pack quantity. These are configurable options within this canonical product, not separate products. No maximum operating speed, standard, approval or performance figure is published here; the manufacturer's marking and documentation for the wheel supplied govern its use.

Maximum operating speed, machine compatibility, guarding and personal protective equipment requirements are set by the manufacturer of the specific item supplied and by the tool manufacturer. Allzone publishes no operating data here; the manufacturer's markings and instructions for the item actually supplied always govern use.

Send the wheel diameter, thickness and arbor, the tool or machine it will run on, the material and section being cut, the pack size you buy in and the quantity required. Tell us if a stainless-steel specification with controlled contaminants is needed.