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AbrasivesSKU MW911240

5" Grinding Disc - Aluminum

$3.99

CAD · Taxes and shipping calculated at checkout

  • Aluminum-specific, anti-loading bond: resists clogging and glazing on aluminum, cast aluminum, brass and copper
  • No contamination: iron-free grinding keeps aluminum welds clean and prevents corrosion
  • Type 27 depressed center: clearance for flat and low-angle grinding, weld blending and bevelling
  • Fiberglass reinforced: stable and safe at high RPM
Thickness: 1/4"
Brand: Karbosan
Type: Type 27 Depressed

905 919 1177
  • Ships Canada-wide from our Toronto warehouse
  • Canada-wide shippingTracked delivery to shops and job sites
  • Toronto showroomSee it in person, or collect at the counter
  • Expert supportTalk to people who weld, not a script
  • Secure checkoutEncrypted payment through Shopify

Overview

5" Aluminum Grinding Disc – Type 27 Depressed Center

These 5" (125 mm) aluminum grinding discs are built for fabricators, welders and maintenance crews who grind aluminum every day. Standard steel discs load up and glaze on soft metals. The anti-loading, resin-bonded formula on these discs stays open and cool, removes material consistently and does not leave iron in the aluminum, so welds stay clean and parts stay corrosion-free.

Select thickness, brand and type above. Available from Karbosan. Ships across Canada from MapleWeld, or pick up at our North York, Toronto showroom.

Key Features

  • Aluminum-specific, anti-loading bond: resists clogging and glazing on aluminum, cast aluminum, brass and copper
  • No contamination: iron-free grinding keeps aluminum welds clean and prevents corrosion
  • Type 27 depressed center: clearance for flat and low-angle grinding, weld blending and bevelling
  • Fiberglass reinforced: stable and safe at high RPM
  • Universal fit: 7/8" arbor fits standard 5" angle grinders (DeWalt, Milwaukee, Makita, Bosch, Metabo)

Applications

  • Aluminum weld removal and bead blending (MIG and TIG)
  • Bevelling and edge prep before aluminum welding
  • Deburring and cleaning up cut edges on plate, extrusion and tube
  • Marine, boat and pontoon repair
  • Trailer, truck body, ramp, railing and general aluminum fabrication

Technical Specifications

Diameter 5" (125 mm)
Thickness 1/4" (6 mm)
Arbor / Bore 7/8" (22.23 mm)
Disc Type Type 27 Depressed Center
Application Aluminum & non-ferrous metal grinding
Bond Resin-bonded, fiberglass reinforced, anti-loading
Brands Karbosan
Tool 5" angle grinder

Part Number & Option Reference

SKU Thickness Brand Type Price
MW911240 1/4" Karbosan Type 27 Depressed $3.99 CAD

Buy Aluminum Grinding Discs in Canada

MapleWeld (Maple Industrial Products Inc.) is a Canadian welding supply company based in North York, Toronto, Ontario. We ship abrasives and welding consumables coast to coast and serve walk-in customers from across the GTA. Business accounts, volume pricing and product samples are available for fabrication shops, contractors and maintenance departments.

Related Products

4.5" Aluminum Grinding Disc | Silverstar Flap Discs for Aluminum | XF733 Fiber Discs for Aluminum | Aluminum Cutting Discs – Type 1 | 9A Angle Grinder 4.5/5" | All Grinding Discs | Abrasives

Specifications

5" Grinding Disc - Aluminum - specifications
Product typeAbrasives
Thickness1/4"
BrandKarbosan
TypeType 27 Depressed
Diameter5" (125 mm)
Thickness1/4" (6 mm)
Arbor / Bore7/8" (22.23 mm)
Disc TypeType 27 Depressed Center
ApplicationAluminum & non-ferrous metal grinding
BondResin-bonded, fiberglass reinforced, anti-loading
BrandsKarbosan
Tool5" angle grinder

Frequently asked questions

What is the best 5" grinding disc for aluminum?

Use a disc formulated for aluminum and non-ferrous metals, like the Karbosan discs on this page. Standard steel grinding discs load up (clog) on aluminum, glaze over and lose cutting action. Aluminum-specific discs use an anti-loading bond that keeps removing material cleanly.

Can I use a regular steel grinding disc on aluminum?

It is not recommended. Soft aluminum smears into the pores of a standard disc, which clogs it quickly, generates excess heat and can cause the disc to grab. Steel discs can also leave iron particles in the aluminum, which leads to corrosion and weld defects. Keep dedicated discs for aluminum.

What does Type 27 depressed center mean?

Type 27 discs have a recessed (depressed) center hub, so the grinder's locking nut sits below the grinding face. That gives clearance to work flat or at a low 15–30 degree angle for surface grinding, weld blending and bevelling without the nut touching the workpiece.

Will this 5" disc fit my angle grinder?

Yes, if your grinder is rated for 5" (125 mm) discs. It has a standard 7/8" (22.23 mm) arbor that fits DeWalt, Milwaukee, Makita, Bosch, Metabo, Ryobi and other common angle grinders. Always check that the grinder's guard matches the disc size and that the grinder's RPM does not exceed the disc's maximum rated RPM.

What is the grinding disc used for?

Removing aluminum welds and weld spatter, blending and smoothing weld beads, bevelling edges before welding, deburring cut edges and general stock removal on aluminum, cast aluminum, brass, copper and other non-ferrous metals. Common in marine, trailer, truck body, railing and general fabrication shops.

Do you ship aluminum grinding discs across Canada?

Yes. MapleWeld ships across Canada, including Ontario, Quebec, British Columbia, Alberta, Manitoba, Saskatchewan and the Atlantic provinces. All prices are in Canadian dollars. Volume and box pricing is available for fabrication shops and contractors.

Can I pick up grinding discs in Toronto or the GTA?

Yes. You can shop in person at our North York, Toronto showroom, which serves the GTA including Vaughan, Mississauga, Brampton, Markham, Scarborough, Etobicoke and Richmond Hill. Contact us to confirm stock before visiting or to set up a business account.

How do I safely use an aluminum grinding disc?

Wear safety glasses or a face shield, hearing protection and gloves. Keep the grinder guard in place. Run the grinder at full speed for a moment before touching the work. Grind at a 15–30 degree angle with moderate pressure, and never use a Type 27 grinding disc for cutting. Check for cracks or damage before mounting, and replace the disc once it wears down to the label.

Not sure this is the right part?

Tell us the machine, the material and the job. A welding specialist - not a call centre - will confirm fit and pricing, including volume and trade quotes.

905 919 1177

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