Collection: Grinding Wheels

A bonded grinding wheel removes metal faster and holds an edge for heavy weld dressing. A flap disc grinds and finishes in one pass and leaves a better surface, so it saves a step when the part will be seen or coated. Heavy removal favours the wheel; blending and finishing favour the flap disc.

A flaring cup wheel presents a wide flat face rather than an edge, which suits surface grinding, snagging and work on stone and concrete where you want an even contact area instead of a cutting edge.

A code such as A24R reads as grain, grit and hardness: A is aluminium oxide, 24 is the grit, and the letter is how firmly the bond holds the grain. A harder grade holds grain longer and suits softer material; a softer grade releases grain faster and stays sharp on hard material.

Check the maximum RPM marked on the wheel against the no-load speed on the grinder, and inspect the wheel for cracks before mounting. A wheel that has been dropped should not be used.