21 mm 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

				12	21	5	1	430	33,000	-20	230	Standard	6801	5972K212	00000


				15	21	4	1	210	13,000	-50	130	Standard	6702	6656K84	00000


				Shielded







								Steel

								12	21	5	1	430	33,000	-20	230	Standard	6801-2Z	5972K154	00000


								15	21	4	1	210	11,000	-40	150	Standard	6702-2Z	6656K181	00000




										Corrosion-Resistant 440C Stainless Steel

										15	21	4	1	210	11,000	-40	150	Standard	6702-2Z	6656K182	00000


										Sealed







														Steel

														12	21	5	1	430	33,000	-20	230	Standard	6801-2RS	5972K276	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	2349K726	000000




						Corrosion-Resistant 440C Stainless Steel

						12	21	5	1	430	18,000	-10	200	Standard	6801	4668K153	00000


						15	21	4	1	210	16,000	-10	200	Standard	6702	4668K144	00000


						Sealed







										Steel

										12	21	5	1	320	18,000	10	200	Standard	6801-2RS	2349K782	00000




												Corrosion-Resistant 440C Stainless Steel

												12	21	5	1	430	18,000	-10	200	Standard	6801-2RS	4668K263	00000


												12	21	7	1	430	18,000	-10	200	Standard	63801-2RS	4668K286	00000
												15	21	4	1	210	16,000	-10	200	Standard	6702-2RS	4668K254	00000

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	4390N122	000000


				12	21	7	23	1.5	1	430	36,000	-50	280	Standard	63801	4390N124	00000
				15	21	4	22.5	0.8	1	210	13,000	-50	280	Standard	6702	4390N127	00000




						Corrosion-Resistant 440C Stainless Steel

						15	21	4	22.5	0.8	1	165	13,000	-50	280	Standard	6702	4390N128	00000


						Shielded







										Steel

										12	21	5	23	1.1	1	430	30,000	-50	300	Standard	6801-2Z	4390N159	00000


										12	21	7	23	1.5	1	430	30,000	-50	300	Standard	63801-2Z	4390N162	00000
										15	21	4	22.5	0.8	1	210	11,000	-50	300	Standard	6702-2Z	4390N165	00000




												Corrosion-Resistant 440C Stainless Steel

												12	21	5	23	1.1	1	340	30,000	-50	300	Standard	6801-2Z	4390N161	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	5905K532	000000


		15	21	16	2,350	3,250	16,500	Required	8	-40 to 280	DIN 618, ISO 3245	5905K356	0000
		15	21	22	3,000	4,350	16,500	Required	8	-20 to 280	DIN 618, ISO 3245	5905K533	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	5905K572	00000


				15	21	18	2,350	3,200	9,900	Lubricated	8	0 to 210	DIN 618	5905K573	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	5905K357	00000

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	1378N61	0000000

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	1418N101	000000

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	4648K228	000000


				15	21	4	1	210	11,000	-40	200	Standard	FDA Compliant 21 CFR 178.3570	6702-2RS	4648K323	00000

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.

Stainless Steel—These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they're not as strong as steel bearings.

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



	10	21	6.35	Nylon	175	5,000	-40 to 220	Two Washers	6655K55	00000


	Stainless Steel



			10	21	6.35	Nylon	120	5,000	-40 to 220	Two Washers	6655K75	0000

Ball Screw/Splines and Bearings

From one compact system, transmit linear or rotary motion or both at once (sometimes called spiral motion). Because of these different motions, these ball screw/splines and bearings create efficient, fluid movements in complex automated applications, such as pick-and-place robots.

The ball bearings move smoothly and precisely, even at high speeds. They're powered independently, so you can drive one bearing at a time or both together to coordinate movements.

The ball screw/splines are hardened on the surface, so they stand up to repeated motion. They’re also hollow, so you can run electrical wiring, compressed air tubing, coolants, or lubricant through their center.

	Spline		Thread						Ball Screw Bearing				Ball Spline Bearing
	Lg., mm	No. of	Lg., mm	Direction, ° F	Thread Direction	ID, mm	Lg., mm	Root Dia., mm	OD, mm	Overall Lg., mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	OD, mm	Overall Lg., mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque, in·lbf		Each
1055 Carbon Steel







				10 mm Dia. (Tolerance: -0.015 mm to 0 mm)

				300	4	270	5 to 176	Right Hand	4	300	9.27	23	34.5	380	600	21	33	600	1,100	34	4049N12	000000000

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



		8	21	2	Nylon	1,750	18,000	0 to 240	DIN 5405-2	5909K3	00000	1	5909K295	00000	2.75	5909K296	000000

Linear Ball Bearings

Bearings are for use with round end-supported shafts. To install, slide bearings into a housing (not included).

Fixed Alignment


With Retaining Ring Grooves

Fixed-alignment bearings are for use where shaft misalignment is unlikely.

Stainless Steel Ball—Bearings with stainless steel balls are more corrosion resistant than bearings with steel balls.

With Retaining Ring Grooves—For bearings with retaining ring grooves, secure with two retaining rings (sold individually).

With End Seals—Bearings with end seals keep lubricant in and dust out.

	Bearings														Retaining Rings
								Load Capacity, lb.		Temp., ° F
	For Shaft Dia., mm	Overall Lg., mm	OD, mm	For Housing ID	With Retaining Ring Grooves	Retaining Ring Groove End-to-End Lg., mm	With End Seals	Dynamic	Static	Min.	Max.	For Shaft Material		Each	Pkg. Qty.		Pkg.
440C Stainless Steel Bearings with Stainless Steel Balls



		12	30	21	21.000 mm to 21.021 mm	Yes	23	Yes	110	175	-4	176	Stainless Steel, Steel	3766N16	000000	5	90967A237	000000


		Steel Bearings with Steel Balls



				12	30	21	21.000 mm to 21.021 mm	Yes	23	Yes	110	175	-4	176	Stainless Steel, Steel	3766N98	00000	25	98541A461	0000

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
8	21	1	Steel	DIN 5405-3, ISO 303	5909K295	00000
8	21	2.75	Steel	—	5909K296	00000

Ultra-Thin Linear Sleeve Bearings

Thinner than standard linear sleeve bearings, these bearings fit where clearance is a concern. Pair them with round end-supported shafts. They have fixed alignment, so they’re best for applications where shaft misalignment is unlikely. The PTFE lining stands up to chemicals and won’t scratch the shaft. To install, slide them into a housing (not included).

Fixed Alignment

Image of Product. Front orientation. Linear Bearings. Ultra-Thin Linear Sleeve Bearings.

										Temp., ° F
	For Shaft Dia., mm	Shaft Clearance, mm	Overall Lg., mm	OD, mm	For Housing ID	With Retaining Ring Grooves	With End Seals	Dynamic Linear Load Cap. @ Speed	Static Load Cap., lb.	Min.	Max.	For Shaft Material		Each
PTFE-Lined 6061 Aluminum Bearings



		14	0.038	28	21	21.000 mm to 21.021 mm	No	No	300 lb. @ 100 fpm	2,250	-400	375	Stainless Steel, Steel	7954N15	000000

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.

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.

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	Food Industry Std.		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	2706T548	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	—	2705T154	0000


			18	21	12	25	1	290 lb. @ 60 rpm	225 lb. @ 60 rpm	Yellow	-50 to 190	—	2705T162	0000

Corrosion-Resistant Flange-Mounted Linear Ball Bearings

The bearing, housing, and balls of these mounted bearings are stainless steel for excellent corrosion resistance. The flanged housing is good for vertical linear motion applications. All bearings are for use with round end-supported shafts and have a fixed-alignment design for use where shaft misalignment is unlikely. End seals keep lubricant in and dirt out.

Fixed Alignment


Round Flange	Square Flange

		Overall, mm			Flange, mm				Load Capacity, lb.				Mounting Holes
	For Shaft Dia., mm	Lg.	Wd.	Ht.	Thk.	OD	Bolt Circle Dia., mm	OD, mm	Dynamic	Static	Temp. Range, ° F	For Shaft Material	No. of	Dia., mm		Each
440C Stainless Steel Bearings with Round Flange



		12	30	42	42	6	42	32	21	110	175	-4 to 248	Stainless Steel, Steel	4	4.5	5931K14	000000


		440C Stainless Steel Bearings with Square Flange



				12	30	32	32	6	—	32	21	110	175	-4 to 248	Stainless Steel, Steel	4	4.5	5931K28	00000


				12	57	32	32	6	—	32	21	180	350	-4 to 248	Stainless Steel, Steel	4	4.5	5931K948	000000

High-Speed Ultra-Thin Linear Sleeve Bearings

Use these ultra-thin sleeve bearings in high-speed applications where clearance is a concern. They have a ceramic liner to achieve high speeds and allow rapid acceleration and deceleration. Pair them with round end-supported shafts. These fixed-alignment bearings are for use where shaft misalignment is unlikely. To install, slide them into a housing (not included).

Fixed Alignment

										Temp., ° F
	For Shaft Dia., mm	Shaft Clearance, mm	Overall Lg., mm	OD, mm	For Housing ID	With Retaining Ring Grooves	With End Seals	Dynamic Linear Load Cap. @ Speed	Static Load Cap., lb.	Min.	Max.	For Shaft Material		Each
Ceramic-Lined 6061 Aluminum Bearings



		14	0.038	28	21	21.000 mm to 21.021 mm	No	No	300 lb. @ 100 fpm	2,250	-200	400	Stainless Steel, Steel	8324N15	000000

Bearing Locknuts

Carbon Steel

With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.

Zinc-Plated Carbon Steel—Zinc-plated carbon steel locknuts resist rusting from some moisture, but you shouldn’t use them with salt water or chemicals. They are strong and resist wear, though they don’t stand up to corrosion as well as 303 stainless steel locknuts.

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					Zinc-Plated Carbon Steel
	Size	Spacing	OD, mm	Wd., mm	Insert Max. Temp., ° F		Each
Chamfered Face



		M12 × 1 mm	Extra Fine	21	7.5	210	3552N14	000000


		M12 × 1.5 mm	Fine	21	9	210	3552N15	00000

Mounted Linear Bearings for Ball Splines

A flange with mounting holes makes it easy to attach a load to these bearings. Create a compact linear and rotary motion system for robots and other applications requiring complex, fast movements, by combining them with ball splines. These bearings move smoothly and precisely even at high speeds along ball splines while grooves on the ball spline transmit rotary power. Clip a retaining ring (not included) into the groove on these bearings to position them in your system.

Steel Bearings


		For 4 Splines

												Groove, mm
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque, in·lbf	Max. Static Torque, in·lbf	Max. Temp., ° F	With Retaining Ring Grooves	Wd.	Dia.	No. of Mounting Holes		Each



	10	4	33	42	32	21	610	1,100	38	72	176	Yes	1.65	20.5	4	61145K43	0000000

Linear Bearings for Ball Splines

Combine these bearings with a ball spline to create a compact linear and rotary motion system for applications with fast, complex movements, such as robotics. These bearings move smoothly and precisely even at high speeds along ball splines while grooves on the ball spline transmit rotary power. Clip a retaining ring into the groove on these bearings to position them in your system. Use the keyway and included machine key for attaching your load.

Steel Bearings


	For 4 Splines

										Groove, mm			Keyway, mm
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	OD, mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque, in·lbf	Max. Static Torque, in·lbf	Max. Temp., ° F	With Retaining Ring Grooves	Wd.	Dia.	Includes	Lg.	Wd.	Dp.		Each



	10	4	33	21	610	1,100	38	72	176	Yes	1.7	20	Machine Key	13	3	1.5	61145K33	000000

High-Temperature Linear Ball Bearings for Support Rail Shafts

The choice for low-friction motion in high-temperature environments. Mount these bearings on a support rail shaft for applications requiring maximum rigidity. They have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure in place with two retaining rings (sold separately).

Fixed Alignment

	Bearings															Retaining Rings
									Load Capacity, lb.		Temp., ° F
	For Shaft Dia., mm	Overall Lg., mm	OD, mm	Wd., mm	For Housing ID	With Retaining Ring Grooves	Retaining Ring Groove End-to-End Lg., mm	With End Seals	Dynamic	Static	Min.	Max.	For Shaft Material		Each	Pkg. Qty.		Pkg.
Steel Bearings with Steel Balls



		12	30	21	8	21.000 mm to 21.021 mm	Yes	23	No	110	175	-4	230	Stainless Steel, Steel	63255K81	000000	25	98541A461	00000

High-Temperature Linear Ball Bearings

The choice for low-friction motion in high-temperature environments. Bearings are for use with round end-supported shafts and have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included).

Fixed Alignment


With Retaining Ring Grooves

With Retaining Ring Grooves—For bearings with retaining ring grooves, secure with two retaining rings (sold individually).

	Bearings															Retaining Rings
								Load Capacity, lb.			Temp., ° F
	For Shaft Dia., mm	Overall Lg., mm	OD, mm	For Housing ID	With Retaining Ring Grooves	Retaining Ring Groove End-to-End Lg., mm	With End Seals	Dynamic	Static	Dynamic Load Cap. @ Temp.	Min.	Max.	For Shaft Material		Each	Pkg. Qty.		Pkg.
Steel Bearings with Steel Balls



		12	30	21	21.000 mm to 21.021 mm	Yes	23	No	110	175	110 lb. @ 230° F	-4	230	Stainless Steel, Steel	63255K91	000000	25	98541A461	00000