100mm 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

				45	100	25	1	11,900	9,500	-20	230	Standard	6309	5972K125	000000


				55	100	21	1	10,300	9,500	-20	230	Standard	6211	5972K113	00000


				Shielded







								Steel

								45	100	25	1	11,900	6,700	-20	230	Standard	6309-2Z	5972K356	00000


								45	100	25	3	12,400	7,500	-20	230	Standard	6309-2Z	6661K71	000000
								55	100	21	1	9,750	6,300	-20	230	Standard	6211-2Z	5972K367	00000
								55	100	21	3	10,350	7,000	-20	230	Standard	6211-2Z	4481N37	000000
								65	100	18	1	7,300	8,100	-20	230	Standard	6013-2Z	5972K301	000000
								65	100	18	3	7,150	7,000	-20	230	Standard	6013-2Z	4481N23	000000
								80	100	10	1	2,850	12,700	-40	150	Standard	6816-2Z	6656K245	000000


								Sealed







												Steel

												45	100	25	1	11,900	6,700	-20	230	Standard	6309-2RS	5972K363	00000


												45	100	25	3	12,400	4,500	-30	210	Standard	6309-2RS	6661K131	000000
												55	100	21	1	9,650	3,900	-20	230	Standard	6211-2RS	5972K53	00000
												55	100	21	3	10,350	4,300	-30	210	Standard	6211-2RS	4481N81	000000
												65	100	18	1	7,300	3,500	-20	230	Standard	6013-2RS	5972K237	000000
												65	100	18	3	7,150	4,300	-30	210	Standard	6013-2RS	4481N69	000000




														Corrosion-Resistant 440C Stainless Steel

														55	100	21	1	9,750	4,000	-20	210	Standard	6211-2RS	6138K115	000000


														65	100	18	1	6,850	4,000	-20	210	Standard	6013-2RS	6138K121	000000

Spherical-Roller Bearings

Two rows of rollers give these bearings dynamic radial load capacities over five times higher 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



		45	100	36	22309	Steel	42,000	41,000	6,800	Required	212	2721T27	0000000


		55	100	25	22211	Steel	33,400	32,300	5,300	Required	390	2721T7	000000

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

				45	100	25	1	9,150	4,000	10	200	Standard	6309	2349K721	000000


				55	100	21	1	7,500	3,700	10	200	Standard	6211	2349K709	000000


				Sealed







								Steel

								45	100	25	1	9,150	4,000	10	200	Standard	6309-2RS	2349K776	00000


								55	100	21	1	7,500	3,700	10	200	Standard	6211-2RS	2349K764	000000
								65	100	18	1	5,300	3,500	10	200	Standard	6013-2RS	2349K754	000000

High-Precision Angular Contact Ball Bearings

Sealed

Our most precise bearings for tackling radial and thrust loads at once, with tolerances tighter than a speck of dust. Rated ABEC 7 out of 9, they meet strict tolerance standards established by the Annular Bearing Engineers Committee (ABEC). Choose them for equipment that requires both high speed and pinpoint accuracy, such as machine tool spindles. For example, a bearing on a spindle withstands a radial load as it spins at high speeds and a thrust load when the cutting tool touches the workpiece. These bearings don’t handle as much force from radial loads as standard ones, but you can pair them with a cylindrical roller bearing to increase their load capacity.

Single Row—Single-row bearings withstand thrust loads from one direction.

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	Material	Dynamic Combined Load Cap., lbf	Max. Rotation Speed, rpm	Lubrication	Contact Angle	Min.	Max.	Bearing Trade No.		Each
Single Row







				Sealed

				65	100	18	7	Steel	8,750	14,000	Lubricated	15°	0	230	7013	4487N18	000000000

Square-Bore Ball Bearings

The inside corners of these bearings grip square shafts as they turn, so you don't need set screws to hold them in place. They're a good choice when your setup needs to come apart frequently, since there aren't extra mounting steps.

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.

Extended Inner Ring—Connect to mating parts without the need for a spacer. The inner ring juts out farther than the outer ring, so shaft collars and other objects won't touch the bearing's moving parts.

							Temp. Range, ° F
	For Shaft Wd., 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
Sealed







				Steel

				38.5	100	33.3	1	9,750	500	-20	200	Extended	GW211PP17	4469N14	000000

Self-Aligning Ball Bearings

Open

Misalignments correct themselves on the fly in these bearings. Two rows of balls have separate raceways in the inner ring and a shared raceway in the outer ring, so the balls rock back and forth to compensate for misalignment. This construction also reduces noise and vibration.

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

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

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







				Steel

				45	100	36	1	12,350	5,600	4°	Not Rated	210	Standard	2309	6660K341	0000000


				55	100	25	1	6,000	6,000	4°	Not Rated	210	Standard	2211	6660K347	000000

Electrical Insulating Ball Bearings

Shielded

Protect bearings from stray currents. The ceramic balls insulate bearings from electrical charges in electric motors and power generators that can damage the inner ring over time. The balls also generate less heat than metal ones, so you don’t have to lubricate them as often to keep bearings running smoothly.

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.

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







				Steel

				45	100	25	1	14,800	9,700	-20	245	6309-2Z	1389N58	0000000


				55	100	21	1	11,400	9,600	-20	245	6211-2Z	1389N43	000000

Tapered-Bore Ball Bearings

Mount these bearings on tapered shafts. Or, pair with an adapter sleeve to install them on round shafts without needing to press fit. The two rows of balls have separate raceways in the inner ring and a shared raceway in the outer ring, so the balls rock back and forth to compensate for misalignment. This construction also reduces noise and vibration.

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

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

	Bearings														Adapter Sleeves
									Temp. Range
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Misalignment Capability	Rate of Taper	Min.	Max., ° F	Inner Ring Type	Bearing Trade No.		Each	For Shaft Dia., mm		Each
Open







				Steel

				45	100	36	1	12,350	5,600	4°	1:12	Not Rated	240	Standard	2309K	7755N36	0000000	40	7835T154	000000


				55	100	25	1	6,000	6,000	4°	1:12	Not Rated	240	Standard	2211K	7755N43	000000	50	4449N25	00000

High-Load Crossed-Roller Bearings

The thicker inner and outer raceways on these bearings can handle heavier loads than the thin-profile crossed-roller bearings. 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.

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

				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



		70	100	13	4,500	6,200	880	Required	0 to 230	Lubrication Groove, Two Lubrication Holes	1378N13	0000000


		For Combined Radial, Thrust, and Moment Load—Sealed with Steel Ring



				70	100	13	4,500	6,200	700	Lubricated	0 to 210	Lubrication Groove, Two Lubrication Holes	1378N23	000000

Angular Contact Ball Bearings

Single Row

Open

Support radial and thrust loads at the same time. These bearings are often found inside equipment such as gearboxes and pumps. For example, a bearing inside a gearbox withstands a radial load when the gear is engaged and a momentary thrust load when you shift to a new one. While they don't handle as much force from radial loads as standard bearings, you can pair them with a cylindrical roller bearing to increase their load capacity.

Single Row—Single-row bearings withstand thrust loads from one direction.

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

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	Material	Dynamic Combined Load Cap., lbf	Max. Rotation Speed, rpm	Lubrication	Contact Angle	Min.	Max.	Bearing Trade No.		Each
Single Row







				Open

				45	100	25	3	Steel	12,500	8,000	Required	40°	-40	300	7309	6680K32	0000000