2 31/32" OD Bearings | McMaster-Carr

No need to assemble cages and washers—these thrust ball bearings come as one piece for easy installation. The balls spin inside a raceway instead of a cage, so there's room for more balls to support higher loads than three-piece bearings. An outer band holds the balls inside the raceway, keeping lubricant in and dirt out.

Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.

	OD	Thk.	Cage Material	Dynamic Thrust Load Cap., lb.	Max. Rotation Speed, rpm	Temp. Range, ° F		Each
Steel



	1 5/8"	2 31/32"	13/16"	Steel	10,300	2,400	-40 to 245	00000000	000000


	1 11/16"	2 31/32"	13/16"	Steel	10,300	2,400	-40 to 245	00000000	00000

Bearing Locknuts

Carbon Steel

With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.

Carbon Steel—All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as 303 stainless steel locknuts.

303 Stainless Steel—303 stainless steel locknuts resist corrosion better than carbon steel locknuts but aren’t as strong. They withstand washdowns and chemicals.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Locknuts										Sockets
	Thread						Carbon Steel		303 Stainless Steel
	Size	Spacing	OD	Wd.	Insert Max. Temp., ° F	Specs. Met		Each		Each		Each
Chamfered Face



		2.157"-18	Extra Fine	2 31/32"	9/16"	160	ANSI/ABMA 8.2	0000000	000000	0000000	000000	00000000	0000000

Bearing Nuts


Carbon Steel Chamfered Face	303 Stainless Steel, Chamfered Face

Often paired with spring lock washers to strengthen their hold, these bearing nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.

Carbon Steel—Carbon steel bearing nuts are strong and resist wear.

303 Stainless Steel—303 stainless steel bearing nuts resist corrosion better than carbon steel. They also withstand washdowns and chemicals.

Chamfered Face—Chamfered-face bearing nuts weigh less and produce less heat than stepped-face nuts.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Nuts								Bearing Lock Washers		Sockets
	Thread
	Size	Spacing	OD	Wd.	Specs. Met	For Lock Washer Specs. Met		Each		Each		Each
Carbon Steel







				Chamfered Face

				2.157"-18	Extra Fine	2 31/32"	1/2"	ANSI/ABMA 8.2	ANSI/ABMA 8.2	00000000	000000	000000000	00000	00000000	0000000


				303 Stainless Steel







								Chamfered Face

								2.157"-18	Extra Fine	2 31/32"	1/2"	ANSI/ABMA 8.2	ANSI/ABMA 8.2	0000000	00000	000000000	00000	00000000	000000