140mm OD Bearings | McMaster-Carr

Smoother than smooth—the balls inside these bearings roll nearly friction-free. You’ll often find them on rapidly rotating parts, from the whirring chuck on a power drill to the spinning shaft on an electric motor.

Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.

Sealed—The best choice for dirty environments. A barrier seals out dust so it won't gunk up or wear down the balls. However, these bearings retain the most heat since air can't flow through.

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

ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.

							Temp. Range, ° F
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Shielded







				Steel

				65	140	33	3	21,900	5,300	-20	230	Standard	6313-2Z	4481N53	0000000


				80	140	26	3	16,350	4,800	-20	230	Standard	6216-2Z	4481N43	000000
				90	140	24	3	13,600	5,000	-20	230	Standard	6018-2Z	4481N28	000000


				Sealed







								Steel

								65	140	33	3	21,900	3,200	-30	210	Standard	6313-2RS	4481N93	000000


								80	140	26	3	16,350	3,000	-30	210	Standard	6216-2RS	4481N86	000000
								90	140	24	3	13,600	3,000	-30	210	Standard	6018-2RS	4481N75	000000

Spherical-Roller Bearings

Two rows of rollers give these bearings higher dynamic radial load capacities than comparably sized tapered-roller bearings. Also known as rock crusher bearings, they handle heavy shock loads and are used for metal milling machinery, mining and oil field equipment, and in paper mills.

						Combined Load Cap., lbf
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Bearing Trade No.	Ring Material	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	Max. Temp., ° F		Each
Open Bearing



		65	140	48	22313	Steel	78,500	82,000	5,000	Required	212	2721T32	0000000


		80	140	33	22216	Steel	59,250	61,750	3,600	Required	390	2721T13	000000

Bearing Nuts

Carbon 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.

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

ISO 2982— Some chamfered-face bearing nuts meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.

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
	Thread
	Size	Spacing	OD, mm	Wd., mm	Specs. Met	For Lock Washer Specs. Met		Each		Each
Carbon Steel







				Chamfered Face

				M105 × 2 mm	Extra Fine	140	18	DIN 981, ISO 2982	DIN 5406	3554N34	000000	90391A134	00000