7mm OD Bearings | McMaster-Carr

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.

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.

				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

				4	7	2	8.2	0.6	3	60	82,000	-50	300	Standard	74	57155K437	000000




						Corrosion-Resistant 440C Stainless Steel

						3	7	2	8.1	0.5	3	50	88,000	-50	300	Standard	683	57155K427	00000


						4	7	2	8.2	0.6	3	50	82,000	-50	300	Standard	74	57155K438	00000


						Shielded







										Steel

										4	7	2.5	8.2	0.6	3	60	71,000	-50	300	Standard	74-2Z	57155K551	00000




												Corrosion-Resistant 440C Stainless Steel

												3	7	3	8.1	0.8	3	50	74,000	-50	300	Standard	683-2Z	57155K541	00000


												4	7	2.5	8.2	0.6	3	40	71,000	-50	300	Standard	74-2Z	57155K552	00000

Ball Bearings

Shielded

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.

							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







				Corrosion-Resistant 440C Stainless Steel

				3	7	3	5	70	75,000	-40	240	Standard	683-2Z	7804K125	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


				Sealed







								Corrosion-Resistant 440C Stainless Steel

								3	7	3	1	35	60,000	-10	200	Standard	683-2RS	4668K216	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
	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		Each
3.3 mm ID



		7	8	One End	3.3	0.1299"	0.004 to 0.012	0.023 to 0.032	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A899	00000


		7	12	One End	3.3	0.1299"	0.004 to 0.012	0.023 to 0.032	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A901	0000
		7	16	One End	3.3	0.1299"	0.004 to 0.012	0.023 to 0.032	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A902	0000


		3.4 mm ID



				7	8	One End	3.4	0.1339"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A168	0000


				7	12	One End	3.4	0.1339"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A169	0000


				3.5 mm ID



						7	8	One End	3.5	0.1378"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A172	0000


						7	8	Both Ends	3.5	0.1378"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A774	0000
						7	12	One End	3.5	0.1378"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	8486A281	0000
						7	16	One End	3.5	0.1378"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A173	00000


						3.6 mm ID



								7	12	One End	3.6	0.1417"	0.01 to 0.022	0.01 to 0.019	-0.25 to 0.25	PM	Steel	Rockwell C61	DIN 179	8486A425	00000


								7	12	Both Ends	3.6	0.1417"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A778	0000
								7	16	One End	3.6	0.1417"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A175	00000


								3.7 mm ID



										7	8	Both Ends	3.7	0.1457"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A781	0000


										3.9 mm ID



												7	8	One End	3.9	0.1535"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A183	0000


												7	12	One End	3.9	0.1535"	0.01 to 0.022	0.01 to 0.019	-0.25 to 0.25	PM	Steel	Rockwell C61	DIN 179	8486A527	0000


												4 mm ID



7														8	One End	4	0.1575"	0.01 to 0.022	0.01 to 0.019	-0.25 to 0.25	PM	Steel	Rockwell C61	DIN 179	8486A422	00000


7	8													Both Ends	4	0.1575"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A791	0000
7	12													One End	4	0.1575"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	8486A31	0000
7	12													Both Ends	4	0.1575"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A792	0000
7	16													One End	4	0.1575"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A185	00000
7	16													Both Ends	4	0.1575"	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A793	00000

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

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.

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		Each
Moisture-Resistant Ultra-Low-Friction Plastic Blend



	5	7	3	11	1	36 lb. @ 120 rpm	80 lb. @ 120 rpm	Yellow	-50 to 190	2705T116	00000


	5	7	5	11	1	60 lb. @ 120 rpm	80 lb. @ 120 rpm	Yellow	-50 to 190	2705T117	0000


	High-Load Ultra-Low-Friction Plastic Blend



			5	7	5	11	1	85 lb. @ 120 rpm	120 lb. @ 120 rpm	Yellow	-55 to 190	2706T73	0000

High-Precision Ball Bearings

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.

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
Shielded







				Corrosion-Resistant 440C Stainless Steel

				3	7	3	7	55	80,000	-30	280	Standard	7487N47	000000

Dry-Running 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.

								Each
	For Shaft Dia., mm	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Color	Temp. Range, ° F		1-24	25-99	100-Up
High-Load Ultra-Low-Friction Plastic Blend



		5	7	5	85 lb. @ 120 rpm	Yellow	-55 to 190	6377K141	00000	00000	00000


		5	7	10	175 lb. @ 120 rpm	Yellow	-55 to 190	6377K142	0000	0000	0000

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.

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



	4	7	6	9	1.5	70 lb. @ 120 rpm	155 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6659K207	000000


	5	7	3	11	1	46 lb. @ 120 rpm	230 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6659K211	00000
	5	7	5	11	1	75 lb. @ 120 rpm	230 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6659K212	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
3.4 mm ID



		7	5.5	3.4	0.1339"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A162	00000	00000	00000


		7	9.5	3.4	0.1339"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A163	0000	0000	0000
		7	13.5	3.4	0.1339"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A164	00000	00000	00000


		3.5 mm ID



				7	5.5	3.5	0.1378"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A165	0000	0000	0000


				7	9.5	3.5	0.1378"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A166	0000	0000	0000
				7	13.5	3.5	0.1378"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A167	00000	00000	00000


				3.6 mm ID



						7	5.5	3.6	0.1417"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A168	0000	0000	0000


						7	13.5	3.6	0.1417"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A170	00000	00000	00000


						3.7 mm ID



								7	9.5	3.7	0.1457"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A172	0000	0000	0000


								3.8 mm ID



										7	9.5	3.8	0.1496"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A175	0000	0000	0000


										3.9 mm ID



												7	9.5	3.9	0.1535"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A178	0000	0000	0000


												4 mm ID



														7	5.5	4	0.1575"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A180	0000	0000	0000


														7	9.5	4	0.1575"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A181	0000	0000	0000
														7	13.5	4	0.1575"	10	2.5	0.01 to 0.022	0.01 to 0.019	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A182	00000	00000	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

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
1.500 mm Thick Wall (-0.130 mm to 0.130 mm Tolerance)



		7	4	Extruded	-40 to 200	8,900 to 9,500	12 to 18	UL 94 HB	FDA Standard	8585K824	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