4-1/2 inch grinding wheels and grinding discs for angle grinders with a 7/8 inch arbor.
4-1/2 inch grinding wheels and grinding discs for angle grinders with a 7/8 inch arbor. The range covers 1/4 inch depressed center wheels for weld grinding and edge beveling, 1/8 inch flexible wheels for grinding and finishing, and a 1/8 inch wheel that both cuts and grinds, for fabricators, welders and maintenance crews working on steel and stainless steel.
- 4-1/2 x 1/4 x 7/8 inch depressed center (Type 27) wheels in aluminum oxide, in packs of 5 or 25.
- 4-1/2 x 1/8 x 7/8 inch flexible grinding wheels in 60 grit zirconia or 80 grit zirconia and aluminum oxide, in packs of 10.
- 4-1/2 x 1/8 x 7/8 inch cutting and grinding wheel with double fibreglass mesh, in packs of 25, for cutting and light grinding.
- Listed for steel and stainless steel, with cast iron on the cutting and grinding wheel and non-ferrous metals on the flexible wheels.
- Uses include weld grinding, weld removal, edge beveling, surface prep and finishing.
Frequently asked questions
Which 4-1/2 inch grinding wheel should I use?
Pick by the job. The 1/4 inch depressed center wheels handle stock removal, weld grinding and edge beveling. The 1/8 inch flexible wheels cover grinding and finishing in 80 grit, and weld removal, beveling and surface prep in 60 grit. The 1/8 inch cutting and grinding wheel suits jobs that need a cut and some light grinding with one wheel.
Is a 4.5 grinding disc the same as a 4-1/2 inch grinding wheel?
Yes. 4.5 inch, 4-1/2 inch and 115 mm describe the same size, and people say grinding disc or grinding wheel for the same product. All wheels here have a 7/8 inch (22 mm) arbor hole and fit 4-1/2 inch angle grinders.
What does 4-1/2 x 1/4 x 7/8 mean on a grinding wheel?
The three numbers are diameter, thickness and arbor hole, in inches. A 4-1/2 x 1/4 x 7/8 wheel is 4-1/2 inches across, 1/4 inch thick and mounts on a 7/8 inch arbor. In this collection the 1/4 inch wheels are for grinding, and the 1/8 inch wheels are flexible grinding wheels or a combination cutting and grinding wheel.
Can I grind with a 4-1/2 inch cutting disc?
Only if the wheel is listed for grinding. The 1/8 inch cutting and grinding wheel in this collection is listed for cutting and light grinding, so it can do both. Whatever the wheel, never exceed the maximum RPM marked on it: here that is 12,250 RPM on the 80 grit flexible wheel and 13,300 RPM on the others.
See all sizes in Grinding Discs. To choose a wheel, read the grinding wheel buying guide and whether you can grind with a cutting disc.
Shipping, pickup and returns
- Ships from Whitby, Ontario to Canada and the United States. In-stock orders are dispatched within 1–2 business days.
- Free shipping on orders of $100 CAD or more in Canada and US$100 or more to the US. Otherwise a $20 CAD flat rate in Canada, a $27.50 CAD flat rate to the US, or carrier rates at checkout.
- Local pickup at Unit 2, 1450 Victoria Street East, Whitby, Ontario. Orders are usually ready in about 1 hour during business hours.
- Returns within 14 days of receipt for unused items in original packaging. Refund policy
- Buying in volume? Request a wholesale quote. We reply within 1–2 business days.