Locking Ball Bearings | McMaster-Carr

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3,000 lb. to 3,999 lb.

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For Housing ID

65 Products

Mounted Ball Bearings

Smoother than smooth—the balls inside these bearings roll nearly friction-free. The sturdy housing bolts down to support shafts as they turn.

Lubricate regularly to keep your bearing in tip-top shape. Bearings with seals and shields keep lubricants in and contaminants out, and come packed with grease. Open bearings require initial lubrication and offer less protection against dust and debris.

Powder-Coated Cast Iron Housing—A rugged iron base coated in thick powder that protects against water, mild detergents, and oil. However, if the coating is scratched or chipped, the underlying iron may rust.

Eccentric Lock—An off-center opening wedges against the shaft to grip it as it turns. Eccentric locks won't mar the shaft like a set screw, but the shaft will only rotate in one direction, so they aren't suitable for applications where the load will be reversed.

SKF—Manufactured in Europe with a strong focus on precision. The more precise the bearing, the more efficiently it will run.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

	Mounted Bearings												Replacement Bearings
			Overall
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability	Manufacturer		Each		Each
Powder-Coated Cast Iron Housing







				Eccentric Lock

				5/8"	1 1/16"	5 15/32"	1 1/2"	2,150	9,500	Steel	Sealed	2°	SKF	0000000	000000	00000000	000000


				3/4"	1 1/4"	5"	1 19/32"	2,850	8,500	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				7/8"	1 5/16"	5 1/2"	1 43/64"	3,150	7,000	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				1"	1 5/16"	5 1/2"	1 43/64"	3,150	7,000	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				1 1/8"	1 9/16"	6 1/2"	1 59/64"	4,350	6,300	Steel	Sealed	2°	SKF	0000000	000000	———	0
				1 3/16"	1 9/16"	6 1/2"	2 1/16"	4,350	6,300	Steel	Sealed	2°	SKF	0000000	000000	———	0
				1 1/4"	1 13/16"	6 9/16"	2 1/16"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	000000	00000000	00000
				1 3/8"	1 13/16"	6 9/16"	2 1/16"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	000000	00000000	00000
				1 7/16"	1 13/16"	6 9/16"	2 1/16"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				1 1/2"	1 15/16"	7 1/4"	2 1/4"	6,900	4,800	Steel	Sealed	2°	SKF	0000000	000000	00000000	00000
				1 3/4"	2 1/16"	7 15/32"	2 19/64"	7,450	4,300	Steel	Sealed	2°	SKF	0000000	000000	———	0


				1 15/16"	2 3/16"	8 1/8"	2 3/8"	7,850	4,000	Steel	Sealed	2°	SKF	0000000	000000	00000000	000000
				2"	2 7/16"	8 5/8"	2 37/64"	9,800	3,600	Steel	Sealed	2°	SKF	0000000	000000	00000000	000000

One-Way-Locking Ball Bearings

Prevent shafts from reversing direction. These bearings have internal components (sprags) that lock against the outer ring to transmit torque one way but spin freely in the other. They're often found in backstopping, indexing, and overrunning applications. For example, they're used to prevent conveyors from reversing.

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	Max. Torque, ft·lbf	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Shielded







				Steel

				8	22	9	1	720	15,000	1.5	-40	170	Standard	608-2Z	0000000	0000000


				12	32	10	1	1,150	10,000	6.5	-40	170	Standard	FZ 6201	0000000	000000
				15	35	11	1	1,160	9,400	15	-40	170	Standard	FZ 6202	0000000	000000
				17	40	12	1	1,270	8,200	23	-40	170	Standard	FZ 6203	0000000	000000
				20	47	14	1	1,540	6,800	64	-40	170	Standard	FZ 6204	0000000	000000
				25	52	15	1	1,620	5,600	70	-40	170	Standard	FZ 6205	0000000	000000
				30	62	16	1	1,730	4,000	165	-40	170	Standard	FZ 6206	0000000	000000
				35	72	17	1	1,830	3,600	240	-40	170	Standard	FZ 6207	0000000	000000
				40	80	22	1	2,010	3,000	305	-40	170	Standard	FZ 6208	0000000	000000


				Sealed







								Steel

								12	32	14	1	1,150	10,000	6.5	-40	170	Standard	FZ 6201 2RS	0000000	000000


								15	35	16	1	1,160	8,400	15	-40	170	Standard	FZ 6202 2RS	0000000	000000
								17	40	17	1	1,270	7,300	23	-40	170	Standard	FZ 6203 2RS	0000000	000000
								20	47	19	1	1,540	6,000	64	-40	170	Standard	FZ 6204 2RS	0000000	000000
								25	52	20	1	1,620	5,200	70	-40	170	Standard	FZ 6205 2RS	0000000	000000
								30	62	21	1	1,730	4,200	165	-40	170	Standard	FZ 6206 2RS	0000000	000000
								35	72	22	1	1,830	3,600	240	-40	170	Standard	FZ 6207 2RS	0000000	000000
								40	80	27	1	2,010	3,000	305	-40	170	Standard	FZ 6208 2RS	0000000	000000

Light Duty Mounted Ball Bearings

With a two-piece housing made from thin pressed metal, these bearings are a cost-effective option when extreme precision isn't necessary. Less stable than bearings with forged, one-piece housings, they're good for hand-cranked systems, gravity feed conveyor rollers, and other low-speed applications. Inside, the balls roll nearly friction-free to support smooth rotation.

Lubricate regularly to keep your bearing in tip-top shape. These bearings come packed with grease and sealed to block out dust and contaminants.

Steel Housing—Best for dry environments as moisture will cause them to rust.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

			Overall
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability		Each
Steel Housing







				Eccentric Lock

				1/2"	7/8"	3 3/8"	31/32"	2,100	5,500	Steel	Sealed	3°	00000000	000000


				5/8"	7/8"	3 3/8"	31/32"	2,100	5,500	Steel	Sealed	3°	00000000	00000
				3/4"	1"	3 27/32"	1 1/4"	2,850	5,500	Steel	Sealed	3°	00000000	00000
				7/8"	1 1/8"	4 1/4"	1 1/4"	3,100	5,000	Steel	Sealed	3°	00000000	00000
				15/16"	1 1/8"	4 1/4"	1 1/4"	3,100	5,000	Steel	Sealed	3°	00000000	00000
				1"	1 1/8"	4 1/4"	1 1/4"	3,100	5,000	Steel	Sealed	3°	00000000	00000
				1 1/8"	1 15/16"	4 19/32"	1 1/2"	4,300	4,000	Steel	Sealed	3°	00000000	00000
				1 3/16"	1 15/16"	4 19/32"	1 1/2"	4,300	4,000	Steel	Sealed	3°	00000000	00000
				1 1/4"	1 15/16"	4 19/32"	1 1/2"	4,300	4,000	Steel	Sealed	3°	00000000	00000

Food-and-Beverage Permanently Lubricated Mounted Ball Bearings with Two-Bolt Flange

Image of Product. Front orientation. Contains Annotated. Mounted Bearings. Food-and-Beverage Permanently Lubricated Mounted Ball Bearings with Two-Bolt Flange.

Reduce upkeep on your food line with bearings that never need lubrication. On startup, an oil-infused solid polymer releases the optimal amount of food-safe, NSF-registered lubricant—never too much or too little. The embedded oil never leaks out, and seals keep dust and contaminants from sneaking in. Install them into conveyors, packaging systems, and other food processing applications where contact with ingredients is rare but possible. The balls roll nearly friction-free within a sturdy housing to support shafts as they turn. The housing mounts in place with a two-bolt flange, the most common type of flanged bearing.

316 Stainless Steel Housing—The most corrosion-resistant metal we offer, these housings hold up to harsh chemicals and salt water.

Clamp On—Tighten the clamping screw to close the collar around your shaft for a secure, mar-free grip. The collar centers the shaft, decreasing vibration and allowing for higher speeds than set screws. Also known as concentric lock bearings.

Sealmaster—Famous for exceptional sealing, Sealmaster bearings include a signature three-part seal in the inner ring. This design blocks out gritty debris and purges old grease to extend the life of the bearing.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

Closed Caps—Mount on the end of the shaft to block out debris and prevent accidental contact with rotating parts.

Open Caps—Install anywhere along the shaft to block out debris and prevent accidental contact with rotating parts.

	Mounted Bearings													Closed Caps		Open Caps
		Overall
	For Shaft Dia.	Lg.	Wd.	Flange Thk.	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability	Enclosure Rating	Manufacturer		Each		Each		Each
316 Stainless Steel Housing







				Clamp On

				3/4"	4 13/32"	2 17/64"	7/16"	2,600	3,000	Steel	Sealed	2°	IP69K	Sealmaster	00000000	0000000	0000000	000000	0000000	000000


				1"	4 7/8"	2 7/16"	17/32"	2,800	2,000	Steel	Sealed	2°	IP69K	Sealmaster	00000000	000000	0000000	00000	0000000	00000
				25 mm	124 mm	61.9 mm	13.5 mm	2,800	2,000	Steel	Sealed	2°	IP69K	Sealmaster	00000000	000000	0000000	00000	0000000	00000
				50 mm	189 mm	78 mm	14 mm	7,850	1,500	Steel	Sealed	2°	IP69K	Sealmaster	00000000	000000	0000000	00000	0000000	00000

Tapped-Base Mounted Ball Bearings

Smoother than smooth—the balls roll nearly friction-free within a sturdy housing to support shafts as they turn. These bearings mount from the bottom through threaded holes. With a narrow profile, they're a good fit for cramped spots where multiple shafts are mounted close together.

Lubricate regularly to keep your bearing in tip-top shape. These bearings come packed with grease and sealed to block out dust and contaminants.

Set Screw—Turn the screw to lock your shaft in place. A simple, reliable choice, set screws grip tightly, but they can mar shaft surfaces.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

	Mounted Bearings												Replacement Bearings
			Overall
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability	Manufacturer		Each		Each
Powder-Coated Cast Iron Housing







				Set Screw

				25 mm	36.5 mm	76.2 mm	38.1 mm	2,800	6,350	Steel	Sealed	2°	Sealmaster	00000000	0000000	00000000	0000000




						Clamp On

						1 7/16"	1 7/8"	4 1/4"	1 7/8"	5,780	6,500	Steel	Sealed	2°	Sealmaster	00000000	000000	———	0


						1 15/16"	2 1/4"	5 1/2"	2"	7,880	5,000	Steel	Sealed	2°	Sealmaster	00000000	000000	———	0
						2"	2 1/4"	5 1/2"	2"	7,880	5,000	Steel	Sealed	2°	Sealmaster	00000000	000000	———	0
						30 mm	42.9 mm	101.6 mm	38.1 mm	4,380	5,450	Steel	Sealed	2°	Sealmaster	00000000	000000	———	0