Type 5 Grinding Wheels | McMaster-Carr

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10,000 rpm to 19,999 rpm

20,000 rpm to 29,999 rpm

30,000 rpm to 39,999 rpm

40,000 rpm or greater

DFARS Specialty Metals

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EAR99

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23 Products

Internal Diameter Toolroom Grinding Wheels for Metals


Recessed Grinding Wheel

Typically used with cylindrical, surface, and ID grinders, these wheels are specially designed to grind the inside diameter of workpieces. They’re often used to make bearings.

Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.

							Wheel
	Dia.	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Abrasive Material	Abrasive Bond Material	Designation	Shape	Grit (Surface Texture)	Norton Abrasive Grade		Each
32A Gray—VBE Bond







				For Stainless Steel, Aluminum, and Iron

				3/4"	3/4"	1/4"	43,290	Aluminum Oxide	Synthetic Resin	Type 5	Recessed	60 (Rough)	K	0000000	00000


				1"	1"	3/8"	32,470	Aluminum Oxide	Synthetic Resin	Type 5	Recessed	60 (Rough)	K	0000000	0000
				1 1/4"	1"	3/8"	25,970	Aluminum Oxide	Synthetic Resin	Type 5	Recessed	60 (Rough)	K	0000000	0000
				1 1/2"	1"	3/8"	21,640	Aluminum Oxide	Synthetic Resin	Type 5	Recessed	60 (Rough)	K	0000000	0000
				2"	1"	3/8"	16,230	Aluminum Oxide	Synthetic Resin	Type 5	Recessed	60 (Rough)	K	0000000	0000
				2"	1 1/2"	5/8"	16,230	Aluminum Oxide	Synthetic Resin	Type 5	Recessed	60 (Rough)	K	0000000	00000

Shaped Norton Toolroom Grinding Wheels for Metals


Type 5 Grinding Wheel

The special shapes of these wheels provide more clearance than typical straight wheels.

Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.

Norton 38A Abrasive—38A white wheels are for light material removal. They stay cool during use, so they're a good choice for heat-sensitive applications. They are aluminum oxide, which is the most common abrasive used in grinding metal.

Norton 32A Abrasive—32A purple wheels are for medium to heavy material removal. They are aluminum oxide.

Norton 32AA Abrasive—32AA purple wheels are for medium to heavy material removal. They are a blend of aluminum oxide and ceramic aluminum oxide, which lasts up to twice as long as 32A wheels.

Norton 5SG Abrasive—5SG blue wheels are for heavy material removal. They are ceramic aluminum oxide, which lasts up to five times as long as 32A wheels.

							Wheel
	Dia.	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Abrasive Material	Abrasive Bond Material	Designation	Shape	Grit (Surface Texture)	Norton Abrasive Grade		Each
38A White—VBE Bond







				For Steel

				7"	1"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	0000000	000000




						For Steel and Iron

						7"	1"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	K	0000000	00000


						32A Purple—VBE Bond







										For Steel

										7"	3/4"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	00000000	00000


										7"	3/4"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	60 (Rough)	I	00000000	00000
										7"	1"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	00000000	00000
										7"	1"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	60 (Rough)	I	00000000	00000
										8"	1"	1 1/4"	3,105	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	00000000	000000
										8"	1"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	60 (Rough)	I	00000000	000000
										14"	1 1/2"	5"	1,800	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	00000000	000000




												For Steel, Stainless Steel, Iron, and Nickel

												7"	1"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	H	00000000	00000


												32AA Purple—VTR Bond







																For Steel, Stainless Steel, Iron, and Nickel

																7"	3/4"	1 1/4"	3,600	Aluminum Oxide Ceramic	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	00000000	00000


																7"	1"	1 1/4"	3,600	Aluminum Oxide Ceramic	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	00000000	000000


																5SG Blue—VS Bond







																For Steel

																7"	1"	1 1/4"	3,600	Aluminum Oxide Ceramic	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	000000000	000000


				14"												1 1/2"	5"	1,800	Aluminum Oxide Ceramic	Vitrified Clay	Type 5	Recessed	46 (Rough)	I	000000000	000000




																For Steel and Iron

																7"	1"	1 1/4"	3,600	Aluminum Oxide Ceramic	Vitrified Clay	Type 5	Recessed	46 (Rough)	J	000000000	000000


						7"	1"									1 1/4"	3,600	Aluminum Oxide Ceramic	Vitrified Clay	Type 5	Recessed	60 (Rough)	J	000000000	000000

Heavy-Removal Norton Toolroom Grinding Wheels for Metals


Recessed Grinding Wheel

The porous bond leaves more space between abrasive grains so heavy amounts of chips and coolant easily flow through.

Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.

Norton 32A Abrasive—32A purple wheels are for medium to heavy material removal. They are aluminum oxide, which is the most common abrasive used in grinding metal.

							Wheel
	Dia.	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Abrasive Material	Abrasive Bond Material	Designation	Shape	Grit (Surface Texture)	Norton Abrasive Grade		Each
32A Purple—VBEP Bond







				For Steel and Iron

				7"	1"	1 1/4"	3,600	Aluminum Oxide	Vitrified Clay	Type 5	Recessed	46 (Rough)	H	00000000	000000