100mm 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.

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

Maintenance-Free Turntable Bearings

With low-friction internal sleeves made of PTFE, these bearings never need lubrication. Also known as slewing-ring bearings, they’re used for slow, controlled rotation. You’ll often see them rotating hoists, robotic arms, and other heavy machinery. They have holes on both the inner and outer ring, so they’re easy to align and mount.

Note: Listed capacities only apply when bearings are mounted parallel to the ground. These bearings can be mounted in other orientations, but their capacities will be reduced.

	Thrust Load Cap., lb.		Radial Load Cap., lb.							Bearing
	Dynamic	Static	Dynamic	Static	Static Moment Load Cap., ft·lbf	OD, mm	ID, mm	Overall Ht., mm	Material	Type	Material	Plain Bearing Type	Mounting Fasteners Included		Each
For Combined Radial, Thrust, and Moment Loads



		1,550	6,000	330	1,100	140	100	30	29	Anodized Aluminum	Plain	PTFE	Sleeve	No	8700K1	0000000

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

Static-Control Maintenance-Free Turntable Bearings

Image of Product. Front orientation. Turntable Bearings. Maintenance-Free, Static Control.

Safe enough to rotate equipment in microchip and semiconductor manufacturing, these bearings prevent harmful static buildup. They’re made from stainless steel and have specially formulated PTFE sleeves that work together to drain static. Make sure your set up provides a path to the ground.

Also known as slewing-ring bearings, these bearings are great for turning heavy equipment in a slow and controlled way. Their sleeves are also slippery, so they move smoothly and don't require lubrication. For alignment and mounting, they have holes on both the inner and outer ring.

Note: Listed capacities only apply when bearings are mounted parallel to the ground. These bearings can be mounted in other orientations, but their capacities will be reduced.

	Thrust Load Cap., lb.		Radial Load Cap., lb.							Bearing
	Dynamic	Static	Dynamic	Static	Static Moment Load Cap., ft·lbf	OD, mm	ID, mm	Overall Ht., mm	Material	Type	Material	Plain Bearing Type	Mounting Fasteners Included	Performance		Each
For Combined Radial, Thrust, and Moment Loads



		1,550	6,050	330	1,100	140	100	30	29	Stainless Steel	Plain	PTFE	Sleeve	No	Antistatic	7706N101	0000000

Thrust Ball Bearings

For silky-smooth motion, the balls inside these bearings roll nearly friction-free. You'll often find them at the end of a shaft or between a stationary and rotating surface, such as on a propeller or rotary table.

These bearings come as three separate pieces—one cage and two washers. The cage holds the balls in place, while the washers create a surface for the balls to roll on. This design is easy to lubricate, but the oil will attract dust and grime since it's exposed.

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

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



	75	100	19	Steel	10,000	3,200	-40 to 250	Two Washers	7806K725	0000000

Needle-Roller Thrust Bearings


Bearings	Washers

Small but mighty, our thinnest rolling thrust bearings slot into tight spaces and spin at whirring speeds. Their long, slender rollers support thrust loads and reduce friction in everything from machine tool spindles to gearboxes.

A cage holds the rollers in place. You can install these bearings without washers between hardened, ground surfaces for the thinnest profile. If you’re working with unhardened, unground surfaces, you’ll need two washers for the rollers to run on. This three-piece design is easy to lubricate, but the oil will attract dust and grime since it’s exposed.

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

	Thrust Bearings										Thin Washers			Thick Washers
	For Shaft Dia., mm	OD, mm	Thk., mm	Cage Material	Dynamic Thrust Load Cap., lb.	Max. Rotation Speed, rpm	Temp. Range, ° F	Specs. Met		Each	Thk., mm		Each	Thk., mm		Each
Steel



		75	100	4	Steel	12,400	3,300	0 to 240	DIN 5405-2	5909K7	000000	1	5909K586	000000	5.75	5909K587	000000

Thin-Profile Bearing Nuts

Used in pairs or with another bearing nut, these thin-profile nuts—often called shaft nuts—hold bearings, bushings, pulleys, and gears in place on your threaded shaft or spindle. Threading two nuts tightly against each other makes it harder for vibration to loosen your assembly than if you used only one nut. For the nut closer to the bearing, position the stepped face towards the bearing. These thin-profile nuts have holes on the side, so you can tighten and loosen them with a pin spanner wrench. All meet DIN 1816, an international standard for bearing locknut dimensions.

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

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.

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







				Stepped Face

				M68 × 1.5 mm	Extra Fine	100	14	DIN 1816	3549N35	0000000


				M70 × 1.5 mm	Extra Fine	100	14	DIN 1816	3549N36	00000

Washers for Needle-Roller Thrust Bearings

These hardened steel washers protect softer shafts and housings from the rolling contact of needle rollers. Without them, needle rollers can indent and score unhardened surfaces, leading to premature wear and bearing failure. Positioned between the bearing and each mating surface, these washers distribute thrust loads evenly and extend service life. They adapt needle-roller thrust bearings for unhardened, unground surfaces.

For Shaft Dia., mm	OD, mm	Thk., mm	Washer Material	Specs. Met		Each
75	100	1	Steel	DIN 5405-3, ISO 303	5909K586	000000
75	100	5.75	Steel	—	5909K587	00000

Shims

With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.

You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.

Carbon Steel—Best for dry environments since moisture will cause these shims to rust.

Stress-Resistant Spring Steel—These shims are harder and hold their shape better than carbon steel. Use them for high-stress applications, such as leveling heavy machinery. They're best for dry environments since moisture will cause them to rust.

	OD Tolerance, mm	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Carbon Steel







	80 mm ID × 100 mm OD

	0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	1	3088A02	000000


	0.2	-0.045 to 0.045	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	1	3088A04	00000
	0.3	-0.072 to 0.072	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	1	3088A06	00000
	0.5	-0.064 to 0.064	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	10	3088A08	00000
	1	-0.105 to 0.105	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	5	3088A1	0000
	1.5	-0.14 to 0.14	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	1	3088A201	0000
	2	-0.21 to 0.21	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	1	3088A402	0000


	Stress-Resistant Spring Steel







					80 mm ID × 100 mm OD

					0.2	-0.04 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	1	98055A718	0000


					0.3	-0.05 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	1	98055A719	0000
					0.5	-0.05 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	1	98055A720	0000
					1	-0.05 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	1	98055A721	0000