3mm ID 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.

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
Shielded







				Steel

				3	10	4	3	120	60,000	-20	230	Standard	623-2Z	4481N31	000000




						Corrosion-Resistant 440C Stainless Steel

						3	6	2.5	5	45	80,000	-40	240	Standard	63-2Z	7804K124	0000


						3	7	3	5	70	75,000	-40	240	Standard	683-2Z	7804K125	0000
						3	8	4	5	120	67,000	-40	240	Standard	693-2Z	7804K126	0000
						3	10	4	5	140	56,000	-40	240	Standard	623-2Z	7804K128	0000


						Sealed







										Steel

										3	10	4	3	120	40,000	-30	210	Standard	623-2RS	4481N77	00000

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.

							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







				Corrosion-Resistant 440C Stainless Steel

				3	7	2	1	35	60,000	-10	200	Standard	683	4668K105	000000


				3	8	3	1	65	54,000	-10	200	Standard	693	4668K106	00000
				3	9	3	1	65	50,000	-10	200	Standard	603	4668K107	00000
				3	10	4	1	110	46,000	-10	200	Standard	623	4668K103	00000
				3	13	5	1	220	37,000	-10	200	Standard	633	4668K104	00000


				Sealed







								Corrosion-Resistant 440C Stainless Steel

								3	7	3	1	35	60,000	-10	200	Standard	683-2RS	4668K216	00000


								3	8	4	1	65	54,000	-10	200	Standard	693-2RS	4668K217	00000
								3	10	4	1	110	46,000	-10	200	Standard	623-2RS	4668K214	00000
								3	13	5	1	220	37,000	-10	200	Standard	633-2RS	4668K215	00000

Flanged Ball Bearings

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

				3	6	2	7.2	0.6	3	40	96,000	-50	300	Standard	63	57155K424	00000


				3	10	4	11.5	1	3	140	78,000	-50	300	Standard	623	57155K435	00000




						Corrosion-Resistant 440C Stainless Steel

						3	6	2	7.2	0.6	3	30	96,000	-50	300	Standard	63	57155K425	00000


						3	7	2	8.1	0.5	3	50	88,000	-50	300	Standard	683	57155K427	00000
						3	8	3	9.5	0.7	3	100	82,000	-50	300	Standard	693	57155K429	00000
						3	10	4	11.5	1	3	110	78,000	-50	300	Standard	623	57155K436	00000


						Shielded







										Steel

										3	6	2.5	7.2	0.6	3	40	81,000	-50	300	Standard	63-2Z	57155K537	00000


										3	8	4	9.5	0.9	3	120	70,000	-50	300	Standard	693-2Z	57155K542	00000
										3	9	5	10.5	1	3	120	66,000	-50	300	Standard	603-2Z	57155K546	00000




												Corrosion-Resistant 440C Stainless Steel

												3	6	2.5	7.2	0.6	3	30	81,000	-50	300	Standard	63-2Z	57155K538	00000


												3	7	3	8.1	0.8	3	50	74,000	-50	300	Standard	683-2Z	57155K541	00000
												3	8	4	9.5	0.9	3	100	70,000	-50	300	Standard	693-2Z	57155K543	00000
												3	10	4	11.5	1	3	120	66,000	-50	300	Standard	623-2Z	57155K549	00000

High-Precision Ball Bearings

Open

Shielded

The most precise bearings we offer, 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). You'll find them in equipment that requires both high speed and pinpoint accuracy, such as gyroscopes.

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.

							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		Each
Open







				Corrosion-Resistant 440C Stainless Steel

				3	8	3	7	75	73,000	-30	280	Standard	7487N16	000000


				3	10	4	7	90	62,000	-30	280	Standard	7487N17	00000


				Shielded







								Corrosion-Resistant 440C Stainless Steel

								3	6	2	7	41	89,000	-30	280	Standard	7487N46	00000


								3	6	2.5	7	41	89,000	-30	280	Standard	7487N45	00000
								3	7	3	7	55	80,000	-30	280	Standard	7487N47	00000
								3	8	3	7	75	73,000	-30	280	Standard	7487N48	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.

				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



		3	6.5	6	270	180	48,000	Required	8	0 to 240	DIN 618, ISO 3245	5905K347	00000

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.

High-Load PEEK—Get the strength of reinforced PTFE without compromising on heat resistance. With no additives, such as polyester fabric, PEEK bearings won’t melt at high temperatures. They’re also nearly as slippery and chemical resistant as plain PTFE.

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.

High-Load Ultra-Low-Friction Plastic Blend—Create the least amount of friction of any bearings that we offer. They handle heavier loads than Rulon J bearings but can't withstand the same extreme temperatures.

	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



	3	6	4	9	1.5	5 lb. @ 120 rpm	7.5 lb. @ 120 rpm	White	-200 to 450	FDA Compliant 21 CFR 177.1550	2706T511	000000


	High-Load PEEK



			3	6	4	9	1.5	70 lb. @ 120 rpm	110 lb. @ 120 rpm	Beige	-20 to 450	—	6627K501	00000


			Moisture-Resistant Ultra-Low-Friction Plastic Blend



					3	4.5	3	7.5	0.75	36 lb. @ 120 rpm	60 lb. @ 120 rpm	Yellow	-50 to 190	—	2705T111	0000


					3	4.5	5	7.5	0.75	60 lb. @ 120 rpm	60 lb. @ 120 rpm	Yellow	-50 to 190	—	2705T112	0000


					High-Load Ultra-Low-Friction Plastic Blend



							3	4.5	5	7.5	0.75	85 lb. @ 120 rpm	85 lb. @ 120 rpm	Yellow	-55 to 190	—	2706T72	0000

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

				3	8	4	1	125	54,500	-40	200	Standard	FDA Compliant 21 CFR 178.3570	693-2RS	4648K317	000000


				3	10	4	1	140	40,000	-40	200	Standard	FDA Compliant 21 CFR 178.3570	623-2RS	4648K305	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.

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



	3	4.5	3	7.5	0.75	27 lb. @ 120 rpm	115 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6659K201	000000


	3	4.5	5	7.5	0.75	46 lb. @ 120 rpm	115 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6659K202	00000
	3	6	4	9	1.5	37 lb. @ 120 rpm	175 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6659K64	0000
	3	6	5	9	1.5	46 lb. @ 120 rpm	175 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6659K203	00000
	3	6	6	9	1.5	55 lb. @ 120 rpm	175 lb. @ 120 rpm	Mineral Oil	10 to 220	6659K111	0000


	High-Load 863 Iron Copper



			3	6	4	9	1.5	70 lb. @ 120 rpm	270 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2938T75	0000

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



	3	8	3.5	Bronze	130	12,000	-60 to 250	Two Washers	7806K53	00000

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



	3	6	4	37 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6658K64	00000


	3	6	6	55 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6658K111	0000
	3	6	10	90 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6658K721	0000


	High-Load 863 Iron Copper



			3	6	4	70 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2868T304	0000


			3	6	10	185 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2868T305	0000

Linear Ball Bearings

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

Fixed Alignment

Without 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.

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



		3	10	7	7.000 mm to 7.015 mm	No	No	15	20	-4	176	Stainless Steel, Steel	61205K97	000000


		Steel Bearings with Steel Balls



				3	10	7	7.000 mm to 7.015 mm	No	No	15	20	-4	176	Stainless Steel, Steel	61205K71	00000

Metric Press-Fit Drill Bushings

Also known as jig bushings, these metric drill bushings fit inside fixture plate holes to precisely guide drill bits, counterbores, reamers, and other cutting tools. They improve accuracy so that your drilled holes and cuts are consistent from part to part. Known for their versatility, drill bushings are also used as spacers, shims, and machinery bushings. These bushings are made of hardened, ground steel that holds its shape and resists wear, so they last for many cycles without needing to be replaced.

All bushings have a chamfer on the outside that centers the bushing as you place it into the hole. Press into place with a manual or hydraulic press. Since the bushing is sized slightly larger than the hole for an extremely tight fit, it’ll stay put permanently. These are ANSI Type PM bushings—also known as headless bushings—which means you don’t need to counterbore the hole to mount them flush.

They also have an internal chamfer that makes it easy to insert bits, pins, and punches without damaging the bushing or misaligning tools.

Don't see the size you need? Additional sizes are available.

Both Ends—Bushings with an internal chamfer on both ends allow you to insert tools no matter which end of the bushing is inserted into the jig. However, having an internal chamfer on the bottom of your bushing may cause shavings to get caught and bind as you remove the bit.

DIN 179—DIN 179 bushings meet dimensional and material standards that make sure they're compatible with other parts and tools. Although DIN 179 is no longer an active standard, it's still a common reference point for designers.

						Tolerance, mm								Each
	OD, mm	Lg., mm	Internal Chamfer	For Drill Bit Size, mm	For Drill Bit Size Decimal Equiv.	ID	OD	Lg.	Drill Bushing Type	Material	Hardness	Specs. Met		1-5	6-11	12-Up
3 mm ID



		6	8	One End	3	0.1181"	0.01 to 0.022	0.01 to 0.019	-0.25 to 0.25	PM	Steel	Rockwell C61	DIN 179	8486A516	000000	000000	000000


		6	8	Both Ends	3	0.1181"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A757	0000	0000	0000
		6	12	One End	3	0.1181"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	8486A25	0000	0000	0000
		6	12	Both Ends	3	0.1181"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A758	0000	0000	0000
		6	16	One End	3	0.1181"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A161	00000	00000	00000
		6	16	Both Ends	3	0.1181"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A759	00000	00000	00000
		10	20	One End	3	0.1181"	0.006 to 0.016	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A180	00000	00000	00000

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







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

				200	4	180	5 to 176	Right Hand	3	200	7.44	19	28.5	240	400	16	25	330	580	17	4049N11	000000000

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.

Aluminum Housing—One-third the weight of cast iron but not as strong. Aluminum also resists corrosion.

Press Fit—For a tight connection to the shaft, install with a press or by heating and then cooling the bearing. Also known as an interference fit.

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







				Press Fit

				3	3/8"	1 29/64"	13/64"	110	25,000	440C Stainless Steel	Sealed	McMaster-Carr Approved	4491N27	000000


				3	3/8"	1 29/64"	13/64"	110	50,000	440C Stainless Steel	Shielded	McMaster-Carr Approved	8600N113	00000

Ultra-Low-Friction Oil-Embedded 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.

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	Lubricant Additive	Temp. Range, ° F	Specs. Met		Each
841 Bearing Bronze



	3	6	4	37 lb. @ 120 rpm	Synthetic Oil	PTFE	-60 to 300	ASTM B438	1688K114	00000


	3	6	10	90 lb. @ 120 rpm	Synthetic Oil	PTFE	-60 to 300	ASTM B438	1688K115	0000


	High-Load 863 Iron Copper



			3	6	4	70 lb. @ 120 rpm	Synthetic Oil	PTFE	-60 to 300	—	7460N114	0000


			3	6	10	185 lb. @ 120 rpm	Synthetic Oil	PTFE	-60 to 300	—	7460N115	0000

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.

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.

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	Dynamic Radial Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load 932 Bearing Bronze



	3	6	3	55 lb. @ 120 rpm	-350 to 450	7811K111	00000

Flanged Sleeve 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



	3	6	4	9	1.5	70 lb. @ 120 rpm	350 lb. @ 120 rpm	-350 to 450	5448T411	000000

Tight-Tolerance Drive Rollers

The surface of these rollers is molded to a tolerance of either ±0.003 in. or ±0.08 mm to provide more consistent surface contact. Also known as contact wheels and feed rollers, they have tapped hubs that allow you to mount them onto a shaft or stud to transmit power. The urethane rubber surface is nonmarring and wear resistant.

	Roller, mm					Set Screws
	Dia.	Wd.	For Shaft Dia., mm	Hub Wd., mm	Shaft Mount Type	No. Required	Included	Temp. Range, ° F	Choose a Hardness (Hardness Rating)		Each
Urethane Rubber Rollers with Aluminum Hub



		12	6	3	6	Set Screw	1	Yes	-40 to 180	Durometer 55A (Medium) Blue, Durometer 70A (Hard) Orange	2481K111	000000

Ultra-Low-Friction Oil-Embedded Flanged Sleeve Bearings

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

	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	Specs. Met		Each
841 Bearing Bronze



	3	6	4	9	1.5	37 lb. @ 120 rpm	175 lb. @ 120 rpm	Synthetic Oil	PTFE	-60 to 300	ASTM B438	1677K214	00000


	High-Load 863 Iron Copper



			3	6	4	9	1.5	70 lb. @ 120 rpm	270 lb. @ 120 rpm	Synthetic Oil	PTFE	-60 to 300	—	7119N113	0000

Mounted Linear Ball Bearings

Bearings are for use with round end-supported shafts. All have end seals to keep lubricant in and dirt out.

Fixed Alignment

Image of Product. Front orientation. Contains Annotated. Linear Bearings. Mounted Linear Ball Bearings .

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

		Overall, mm					Load Capacity, lb.		Temp., ° F			Mounting Holes
	For Shaft Dia., mm	Lg.	Wd.	Ht.	Ctr. Ht., mm	With End Seals	Dynamic	Static	Min.	Max.	For Shaft Material	No. of	Dia., mm	Thread Size		Each
Steel Bearings with 6061 Aluminum Housing



		3	13	16	10	5	Yes	15	23	-4	176	Stainless Steel, Steel	4	2	M2 × 0.4 mm	9338T61	000000

Ball Joint Rod Ends

Made of steel, these rod ends generally handle higher loads than stainless steel, aluminum, and nylon rod ends. They don’t come lubricated, so you’ll need to lubricate during installation and on an ongoing basis.

	Shank
	Thread Size	Ctr. Lg., mm	Thread Lg., mm	ID, mm	Max. Ball Swivel	Overall Wd., mm	Overall Thk., mm	Static Radial Load Cap.	Material	Shank Thread Direction		Each
Ball Joints



		M3 × 0.5 mm	25	14	3	30°	9.8	6.4	Not Rated	Carbon Steel	Right Hand	59935K11	00000

Clear Ultra-Impact-Resistant Polycarbonate Round Tubes

Comparable to Lexan, Hyzod, Tuffak, and Makrolon, these polycarbonate tubes are half the weight of glass and maintain excellent impact resistance across a wide temperature range. Use them to make instrument gauge covers and display racks.

Metric

Image of Product. Front orientation. Plastic. Clear Ultra-Impact-Resistant Polycarbonate Round Tubes.

									8 ft. Long
	OD, mm	ID, mm	Fabrication	Temp., ° F	Tensile Strength, psi	Impact Strength, ft·lbf/in	Flammability Rating	Food Industry Std.		Each
1.000 mm Thick Wall (-0.130 mm to 0.130 mm Tolerance)



		5	3	Extruded	-40 to 200	8,900 to 9,500	12 to 18	UL 94 HB	FDA Standard	8585K818	00000


		2.000 mm Thick Wall (-0.260 mm to 0.260 mm Tolerance)



				7	3	Extruded	-40 to 200	8,900 to 9,500	12 to 18	UL 94 HB	FDA Standard	8585K827	0000

Ultra-Low-Friction Oil-Embedded Thrust Bearings

Our slipperiest metal thrust bearings glide on machines with frequent starts and stops, such as conveyors. Their oil contains nonstick PTFE particles that reduce wear and heat, extending the life of your equipment. All are fabricated, lubricated, and inspected in the U.S.

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 run at slower speeds. The increased iron content also makes them appear silver.

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



	3	6	1.5	125 lb. @ 120 rpm	Synthetic Oil	PTFE	-60 to 300	7380N173	000000

Oil-Embedded Thrust Bearings

Our simplest-to-use thrust bearings, with no moving parts and no need to lubricate. Their porous surface releases oil over time, so you can install and forget them. While they run in most conditions, oil may drip away if temperatures climb too high. For extremely hot environments, consider graphite-lubricated bearings. All are fabricated, lubricated, and inspected in the U.S.

841 Bearing Bronze—A balance of strength and speed makes these bearings a good choice for most applications. Also known as SAE 841 bearing bronze.

	OD, mm	Thk., mm	Dynamic Thrust Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	3	6	1.5	210 lb. @ 120 rpm	Synthetic Oil	-35 to 300	2011N36	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

Without Retaining

Ring Grooves

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



		3	10	7	7.000 mm to 7.015 mm	No	No	15	20	15 lb. @ 230° F	-4	230	Stainless Steel, Steel	63255K41	000000

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



	3	6	10	90 lb. @ 120 rpm	Synthetic Oil	-75 to 300	FDA Compliant 21 CFR 178.3570	7095K115	00000


	High-Load 863 Iron Copper



			3	6	4	70 lb. @ 120 rpm	Synthetic Oil	-75 to 300	FDA Compliant 21 CFR 178.3570, ASTM B439	7407N114	0000

Shaft Grommets

Made of slippery plastic, these grommets allow shafts and bearings to spin freely in metal panels. The split construction lets you snap them around shafts you’ve already installed.

MDS-Filled Nylon—These slippery grommets absorb friction from spinning shafts over long periods. However, they can’t withstand the same high temperatures as our other nylon grommets.

	For Material Thk., mm	ID, mm	Flange Dia., mm	Flange Ht., mm	Overall Ht., mm	Temp., ° F	For Use Outdoors	Color		Each
MDS-Filled Nylon



	4.2	1.5 to 2.3	3	4.8, 6	0.6	3.2	-40 to 170	Yes	Black	7817K51	00000


	4.2	2.9 to 3.1	3	4.8, 6	0.6	4.2	-40 to 170	Yes	Black	7817K52	0000

Internally Threaded Ball Joint Rod Ends

Made of steel, these rod ends generally handle higher loads than stainless steel, aluminum, and nylon rod ends. They don’t come lubricated, so you’ll need to lubricate them during installation and on an ongoing basis.

	Shank
	Thread Size	Ctr. Lg., mm	Thread Lg., mm	ID, mm	Max. Ball Swivel	Overall Wd., mm	Overall Thk., mm	Static Radial Load Cap.	Material	Shank Thread Direction		Each
Ball Joints



		M3 × 0.5 mm	22	10	3	30°	11	4.9	Not Rated	Carbon Steel	Right Hand	59935K13	00000

Metric Press-Fit Drill Bushings with Head


Shown in Countersunk Hole	Shown in Standard Hole

Even under extreme drilling pressure, these metric bushings won't press through your jig plate. They’re ANSI Type H bushings, also known as headed bushings. A flanged head acts as a stop, so these bushings won’t move as you push down your drill bit, reamer, or other cutting bit. Use them even in jigs made of thin or soft materials—the head adds support to protect your jig from damage caused by heavy use. Drill bushings ensure accurate, consistent cuts and drilled holes from one part to the next. They’re also used as spacers, shims, and machinery bushings. Made of hardened, ground steel, these bushings hold their shape and resist wear, so they last for many cycles without needing to be replaced.

These bushings meet DIN 172 dimensional standards. This standard is no longer active, but it’s often used as a reference point for making sure parts are compatible with other parts and tools.

To install, fit the bushing into a hole in your jig. In a standard hole, the head will sit above the jig plate; to mount flush, install in a countersunk hole. A chamfered edge on the bottom of the bushing helps center the bushing in the hole. Once it’s centered, press the bushing into the hole with a hydraulic or lever press.

					Head, mm		Tolerance, mm								Each
	OD, mm	Lg., mm	For Drill Bit Size, mm	For Drill Bit Size Decimal Equiv.	OD	Thk.	ID	OD	Lg.	Drill Bushing Type	Material	Hardness	Specs. Met		1-5	6-11	12-Up
3 mm ID



		6	5.5	3	0.1181"	9	2.5	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A150	00000	00000	00000


		6	9.5	3	0.1181"	9	2.5	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A151	0000	0000	0000
		6	13.5	3	0.1181"	9	2.5	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A152	00000	00000	00000

Corrosion-Resistant Ball Joint Rod Ends

Made of stainless steel, these rod ends provide excellent corrosion resistance. A PTFE liner allows smooth ball rotation and eliminates the need for lubrication.

	Shank
	Thread Size	Ctr. Lg., mm	Thread Lg., mm	ID, mm	Max. Ball Swivel	Overall Wd., mm	Overall Thk., mm	Static Radial Load Cap.	Material	Shank Thread Direction		Each
Ball Joints



		M3 × 0.5 mm	23	15	3	25°	10	5.2	Not Rated	303 Stainless Steel	Right Hand	2988K511	000000