21mm Housing ID Bearings

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.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

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.

Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.

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
Open







				Steel

				12	21	5	1	430	33,000	-20	230	Standard	6801	00000000	00000


				15	21	4	1	210	13,000	-50	130	Standard	6702	0000000	00000


				Shielded







								Steel

								12	21	5	1	430	33,000	-20	230	Standard	6801-2Z	00000000	00000


								15	21	4	1	210	11,000	-40	150	Standard	6702-2Z	00000000	00000




										Corrosion-Resistant 440C Stainless Steel

										15	21	4	1	210	11,000	-40	150	Standard	6702-2Z	00000000	00000


										Sealed







														Steel

														12	21	5	1	430	33,000	-20	230	Standard	6801-2RS	00000000	0000

Permanently Lubricated Ball Bearings

Install and forget these self-lubricating bearings. Their lubricant is a solid material that fills the space between the balls and releases oil over time, so you'll never need to add more.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

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.

							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
Open







				Steel

				12	21	5	1	140	18,000	10	200	Standard	6801	00000000	000000




						Corrosion-Resistant 440C Stainless Steel

						12	21	5	1	430	18,000	-10	200	Standard	6801	00000000	00000


						15	21	4	1	210	16,000	-10	200	Standard	6702	00000000	00000


						Sealed







										Steel

										12	21	5	1	320	18,000	10	200	Standard	6801-2RS	00000000	00000




												Corrosion-Resistant 440C Stainless Steel

												12	21	5	1	430	18,000	-10	200	Standard	6801-2RS	00000000	00000


												12	21	7	1	430	18,000	-10	200	Standard	63801-2RS	00000000	00000
												15	21	4	1	210	16,000	-10	200	Standard	6702-2RS	00000000	00000

Combination Ball/Needle-Roller Bearings

A built-in thrust ball bearing reduces wear from adjacent shaft components, while the needle rollers support high radial loads. Install anywhere you would use separate bearings for radial and thrust loads.

						Radial Load Cap., lb.		Thrust Load Cap., lb.
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Ball Bearing OD, mm	Ball Bearing Wd., mm	Dynamic	Static	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	For Shaft Surface Smoothness, Ra, μin	Temp. Range, ° F	Features		Each
For Combined Radial and Thrust Load—Open with Steel Ring



		12	21	23	27	9	1,650	1,900	2,170	2,490	9,000	Required	8	-20 to 230	Lubrication Groove, Lubrication Hole	00000000	000000

Thin-Profile Crossed-Roller Bearings

For a more compact machine, these bearings have thinner inner and outer rings than high-load crossed-roller bearings. Route hydraulic lines, electrical wiring, and other components through the inside of the bearing. The rollers face in alternating directions to allow for rigid, accurate motion under any combination of radial, thrust, and moment (twisting) loads. Use in applications where highly accurate motion is necessary, such as machine tools and industrial robots.

Open Bearing—Open bearings dissipate heat more efficiently than sealed bearings.

				Combined Load Cap., lbf
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	Temp. Range, ° F	Features		Each
For Combined Radial, Thrust, and Moment Load—Open with Steel Ring



		10	21	5	250	180	1,000	Required	0 to 175	Lubrication Hole	0000000	0000000

Flanged Ball Bearings

Open

Shielded

Install these bearings inside a housing and they won't budge. The flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock them off-kilter.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

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

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

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







				Steel

				12	21	5	23	1.1	1	430	36,000	-50	280	Standard	6801	00000000	000000


				12	21	7	23	1.5	1	430	36,000	-50	280	Standard	63801	00000000	00000
				15	21	4	22.5	0.8	1	210	13,000	-50	280	Standard	6702	00000000	00000




						Corrosion-Resistant 440C Stainless Steel

						15	21	4	22.5	0.8	1	165	13,000	-50	280	Standard	6702	00000000	00000


						Shielded







										Steel

										12	21	5	23	1.1	1	430	30,000	-50	300	Standard	6801-2Z	00000000	00000


										12	21	7	23	1.5	1	430	30,000	-50	300	Standard	63801-2Z	00000000	00000
										15	21	4	22.5	0.8	1	210	11,000	-50	300	Standard	6702-2Z	00000000	00000




												Corrosion-Resistant 440C Stainless Steel

												12	21	5	23	1.1	1	340	30,000	-50	300	Standard	6801-2Z	00000000	00000

Needle-Roller Bearings

Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together. Bearings take on the shape of their housing and may be oblong prior to installation.

Open Bearing—Open bearings dissipate heat more efficiently than sealed bearings.

Sealed Bearing—Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.

				Radial Load Cap., lb.
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	For Shaft Surface Smoothness, Ra, μin	Temp. Range, ° F	Specs. Met		Each
For Radial Load—Open with Steel Ring



		15	21	12	1,750	2,100	16,300	Required	8	-20 to 280	DIN 618, ISO 3245	00000000	00000


		15	21	16	2,350	3,250	16,500	Required	8	-40 to 280	DIN 618, ISO 3245	00000000	0000
		15	21	22	3,000	4,350	16,500	Required	8	-20 to 280	DIN 618, ISO 3245	00000000	00000


		For Radial Load—Sealed on One Side with Steel Ring



				15	21	14	1,750	2,200	9,900	Lubricated	8	0 to 210	DIN 618	00000000	00000


				15	21	18	2,350	3,200	9,900	Lubricated	8	0 to 210	DIN 618	00000000	00000


				For Radial Load—Sealed on Both Sides with Steel Ring



						15	21	16	2,350	3,250	9,900	Lubricated	8	-20 to 210	DIN 618, ISO 3245	00000000	00000

Ball Bearings for Food and Beverage

Sealed

Food production rolls along smoothly on these bearings. Greased with FDA-compliant lubricant, they’re safe to install on food-processing equipment, such as conveyor belts, so long as they don’t directly touch the food. The lubricant is a solid material that fills the space between the balls and releases oil over time, so you'll never need to add more.

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.

							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	Food Industry Std.	Bearing Trade No.		Each
Sealed







				Corrosion-Resistant 440C Stainless Steel

				12	21	5	1	360	18,000	-40	200	Standard	FDA Compliant 21 CFR 178.3570	6801-2RS	00000000	000000


				15	21	4	1	210	11,000	-40	200	Standard	FDA Compliant 21 CFR 178.3570	6702-2RS	00000000	00000

Oil-Embedded Flanged Sleeve Bearings

Install and forget these self-lubricating bearings. All are made from porous metal and saturated with oil to reduce maintenance and downtime. A good all-around choice, they are used in everything from palm-sized fans in electronics to tire-sized pulleys. Although these bearings will work in most conditions, oil may drip away if temperatures get too high. Consider a graphite-lubricated bearing for higher temperatures or places where you can’t afford the mess. All are fabricated, lubricated, and inspected in the U.S.

Flanged sleeve bearings combine a sleeve and thrust bearing in one. The flange supports thrust loads and prevents the bearing from being pushed out of place. The sleeve is the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

841 Bearing Bronze—A classic choice for a starter pick. Also known as SAE 841 bearings.

High-Load 863 Iron Copper—Iron makes these bearings harder, stronger, and more resistant to sudden starts and stops than 841 bearing bronze. However, they operate at slower speeds. The increased iron content makes these bearings appear silver.

Mineral Oil Base—Mineral oil consistently lubricates at most temperatures but doesn’t last as long as synthetic oil.

Synthetic Oil Base—A high-quality lubricant makes all the difference. Synthetic oil is less sensitive to temperature changes than mineral oil, so it won't get runny and leak away at higher temperatures.

	For Housing ID, mm	Lg., mm	Flange OD, mm	Flange Thk., mm	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	15	21	15	27	3	690 lb. @ 60 rpm	1,200 lb. @ 60 rpm	Mineral Oil	10 to 220	00000000	00000


	15	21	16	27	3	740 lb. @ 60 rpm	1,200 lb. @ 60 rpm	Synthetic Oil	-35 to 300	0000000	0000
	15	21	20	27	3	930 lb. @ 60 rpm	1,200 lb. @ 60 rpm	Synthetic Oil	-35 to 300	0000000	0000
	15	21	25	27	3	1,150 lb. @ 60 rpm	1,200 lb. @ 60 rpm	Mineral Oil	10 to 220	00000000	0000


	High-Load 863 Iron Copper



			15	21	20	27	3	1,750 lb. @ 60 rpm	1,250 lb. @ 60 rpm	Synthetic Oil	-15 to 300	00000000	0000

Dry-Running Flanged Sleeve Bearings

Made of naturally slippery plastic so you’ll never have to add lubricant. They’re ideal for clean environments where you need to prevent oil drips or graphite flakes. Compared to metal bearings, they are lighter and will never rust.

Ultra-Chemical-Resistant PTFE—The most chemical-resistant bearings we offer. PTFE is unaffected by the harsh fluids that other plastics can't handle, including all strong acids and bases. PTFE also reduces friction better than nylon but is not as strong.

Moisture-Resistant Ultra-Low-Friction Plastic Blend—These bearings won't warp or swell from humidity or direct contact with water. They glide effortlessly for applications with frequent starts and stops, such as conveyor systems.

	For Housing ID, mm	Lg., mm	Flange OD, mm	Flange Thk., mm	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Color	Temp. Range, ° F	Specs. Met		Each
Ultra-Chemical-Resistant PTFE



	15	21	16	27	3	40 lb. @ 60 rpm	36 lb. @ 60 rpm	White	-200 to 450	FDA Compliant 21 CFR 177.1550	00000000	000000


	Moisture-Resistant Ultra-Low-Friction Plastic Blend



			15	21	20	27	3	480 lb. @ 60 rpm	350 lb. @ 60 rpm	Yellow	-50 to 190	—	00000000	0000


			18	21	12	25	1	290 lb. @ 60 rpm	225 lb. @ 60 rpm	Yellow	-50 to 190	—	00000000	0000

Oil-Embedded Sleeve Bearings

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

841 Bearing Bronze—A classic choice for a starter pick. Also known as SAE 841 bearings.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	15	21	15	690 lb. @ 60 rpm	Synthetic Oil	-35 to 300	00000000	00000


	15	21	16	740 lb. @ 60 rpm	Synthetic Oil	-35 to 300	0000000	0000
	15	21	20	930 lb. @ 60 rpm	Synthetic Oil	-35 to 300	0000000	0000
	15	21	25	1,150 lb. @ 60 rpm	Synthetic Oil	-35 to 300	00000000	0000


	High-Load 863 Iron Copper



			15	21	16	1,400 lb. @ 60 rpm	Synthetic Oil	-15 to 300	00000000	0000

Flanged Sleeve Bearings

These bearings don’t come with a lubricant, so you can select the oil that meets the needs of your application. You’ll need to refill the oil, so make sure the bearing is located where you can access it. All are fabricated and inspected in the U.S.

High-Load 932 Bearing Bronze—These bearings are strong enough for sudden starts and stops, plus they resist wear and tear. They are cast from an alloy of leaded tin bronze for uniform rigidity and strength. Also known as 660 leaded bronze bearings.

	For Housing ID, mm	Lg., mm	Flange OD, mm	Flange Thk., mm	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load 932 Bearing Bronze



	15	21	16	27	3	1,450 lb. @ 60 rpm	2,450 lb. @ 60 rpm	-350 to 450	00000000	000000


	15	21	20	27	3	1,850 lb. @ 60 rpm	2,450 lb. @ 60 rpm	-350 to 450	00000000	00000

Ultra-Low-Friction Oil-Embedded Flanged Sleeve Bearings

Our slipperiest metal bearings, these are ideal for machinery with frequent starts and stops, such as conveyors. With nonstick PTFE particles added to the oil, they reduce friction to minimize wear and heat, so equipment runs more efficiently and lasts longer. All are fabricated, lubricated, and inspected in the U.S.

	For Housing ID, mm	Lg., mm	Flange OD, mm	Flange Thk., mm	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Base Oil	Lubricant Additive	Temp. Range, ° F		Each
High-Load 863 Iron Copper



	15	21	16	27	3	1,400 lb. @ 60 rpm	1,250 lb. @ 60 rpm	Synthetic Oil	PTFE	-60 to 300	00000000	00000


	15	21	20	27	3	1,750 lb. @ 60 rpm	1,250 lb. @ 60 rpm	Synthetic Oil	PTFE	-60 to 300	00000000	0000

Sleeve Bearings

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load 932 Bearing Bronze



	15	21	16	1,450 lb. @ 60 rpm	-350 to 450	0000000	00000


	15	21	20	1,850 lb. @ 60 rpm	-350 to 450	0000000	0000

Oil-Embedded Sleeve Bearings for Food and Beverage

These lead-free bearings are infused with a food-grade oil that is odorless, colorless, tasteless, and safe for unintended contact with food. They’re often used in food and beverage processing, packing, and handling equipment. All are made from porous metal and saturated with oil to reduce maintenance and downtime. If you need a bearing rated for contact with food, consider dry-running sleeve bearings for food and beverage. All are fabricated, lubricated, and inspected in the U.S.

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

841 Bearing Bronze—A classic choice for a starter pick. Also known as SAE 841 bearings.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Base Oil	Temp. Range, ° F	Specs. Met		Each
841 Bearing Bronze



	15	21	16	740 lb. @ 60 rpm	Synthetic Oil	-75 to 300	FDA Compliant 21 CFR 178.3570	00000000	000000


	High-Load 863 Iron Copper



			15	21	20	1,750 lb. @ 60 rpm	Synthetic Oil	-75 to 300	FDA Compliant 21 CFR 178.3570, ASTM B439	00000000	00000

Ultra-Low-Friction Oil-Embedded Sleeve Bearings

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Base Oil	Lubricant Additive	Temp. Range, ° F		Each
High-Load 863 Iron Copper



	15	21	16	1,400 lb. @ 60 rpm	Synthetic Oil	PTFE	-60 to 300	00000000	00000