5mm 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.

Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.

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







				Corrosion-Resistant 440C Stainless Steel

				2	5	2.5	5	35	100,000	-40	240	Standard	52-2Z	7804K119	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







				Corrosion-Resistant 440C Stainless Steel

				2	5	1.5	6.1	0.5	3	30	110,000	-50	300	Standard	682	57155K414	000000


				2	5	2	6.2	0.6	3	30	110,000	-50	300	Standard	52	57155K416	00000


				Shielded







								Steel

								2	5	2.5	6.2	0.6	3	30	94,000	-50	300	Standard	52-2Z	57155K527	00000




										Corrosion-Resistant 440C Stainless Steel

										2	5	2.3	6.1	0.6	3	30	94,000	-50	300	Standard	682-2Z	57155K526	00000


										2	5	2.5	6.2	0.6	3	30	94,000	-50	300	Standard	52-2Z	57155K528	00000

High-Precision Ball Bearings

Open

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.

							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

				2	5	1.5	7	22	100,000	-30	280	Standard	7487N14	000000

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
1.8 mm ID



		5	6	One End	1.8	0.0709"	0.002 to 0.008	0.019 to 0.027	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A868	00000


		5	9	One End	1.8	0.0709"	0.002 to 0.008	0.019 to 0.027	-0.02 to 0.2	PM	Steel	Rockwell C61	—	8486A17	00000


		1.85 mm ID



				5	9	One End	1.85	0.0728"	0.002 to 0.008	0.019 to 0.027	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A871	0000


				1.9 mm ID



						5	6	One End	1.9	0.0748"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	DIN 179	96990A137	0000


						2 mm ID



								5	6	One End	2	0.0787"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	DIN 179	96990A139	0000


								5	6	Both Ends	2	0.0787"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	—	96990A732	0000
								5	9	One End	2	0.0787"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	8486A18	0000
								5	9	Both Ends	2	0.0787"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A733	0000


								2.05 mm ID



										5	6	One End	2.05	0.0807"	0.002 to 0.008	0.019 to 0.027	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A874	0000


										2.1 mm ID



												5	6	One End	2.1	0.0827"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	DIN 179	96990A141	0000


												2.15 mm ID



														5	9	One End	2.15	0.0846"	0.002 to 0.008	0.019 to 0.027	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A877	0000


														2.3 mm ID



																5	6	One End	2.3	0.0906"	0.006 to 0.016	0.008 to 0.016	-0.25 to 0.25	PM	Steel	Rockwell C61	DIN 179	8486A512	00000


																2.4 mm ID



																5	9	One End	2.4	0.0945"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	8486A221	0000


																5	9	Both Ends	2.4	0.0945"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A742	0000


																2.5 mm ID



																5	6	One End	2.5	0.0984"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	DIN 179	96990A147	0000


																5	6	Both Ends	2.5	0.0984"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	—	96990A743	0000
				5												9	One End	2.5	0.0984"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A148	0000
				5	9											Both Ends	2.5	0.0984"	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	PM	Steel	Rockwell C61	—	96990A744	0000


				2.55 mm ID



						5										9	One End	2.55	0.1004"	0.002 to 0.008	0.019 to 0.027	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A885	0000


						2.6 mm ID



																5	6	One End	2.6	0.1024"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	DIN 179	96990A149	0000


																5	6	Both Ends	2.6	0.1024"	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	PM	Steel	Rockwell C61	—	96990A745	0000

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

							8 ft. Long
	OD, mm	ID, mm	Fabrication	Temp., ° F	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	UL 94 HB	FDA Standard	8585K818	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
1.9 mm ID



		5	4	1.9	0.0748"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A125	00000	00000	00000


		2 mm ID



				5	4	2	0.0787"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A127	0000	0000	0000


				5	7	2	0.0787"	8	2	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A128	0000	0000	0000


				2.1 mm ID



						5	4	2.1	0.0827"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A129	0000	0000	0000


						5	7	2.1	0.0827"	8	2	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A130	0000	0000	0000


						2.2 mm ID



								5	4	2.2	0.0866"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A131	0000	0000	0000


								5	7	2.2	0.0866"	8	2	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A132	0000	0000	0000


								2.3 mm ID



										5	4	2.3	0.0906"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A133	0000	0000	0000


										5	7	2.3	0.0906"	8	2	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A134	0000	0000	0000


										2.4 mm ID



												5	4	2.4	0.0945"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A135	0000	0000	0000


												5	7	2.4	0.0945"	8	2	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A136	0000	0000	0000


												2.5 mm ID



														5	4	2.5	0.0984"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A137	0000	0000	0000


														5	7	2.5	0.0984"	8	2	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A138	0000	0000	0000


2.6 mm ID



														5	4	2.6	0.1024"	8	2	0.006 to 0.016	0.008 to 0.016	-0.1 to 0.1	H	Steel	Rockwell C61	DIN 172	96977A139	0000	0000	0000


		5	7											2.6	0.1024"	8	2	0.006 to 0.016	0.008 to 0.016	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A140	0000	0000	0000

Shims for Lengthening Screw Shoulders

When shoulders come up short, use these shims to extend the shoulder length on your screw. Wiggle the shims over the threads and up to the existing shoulder to create the exact shoulder length you need. Use them to create more space for bearings, pulleys, and sprockets, or extend the length of travel along the shoulder.

You can stack multiple shims to achieve the exact shoulder length or space you need.

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.

	ID, mm	ID Tolerance, mm	OD, mm	OD Tolerance, mm	Min. Hardness	Pkg. Qty.		Pkg.
Stress-Resistant Spring Steel







	For 5 mm Diameter Shoulder

	0.005"	-0.0005" to 0.0005"	M4	3.98	0 to 0.254	5	-0.254 to 0	Rockwell C40	5	92927A121	000000


	0.015"	-0.001" to 0.001"	M4	3.98	0 to 0.254	5	-0.254 to 0	Rockwell C40	5	92927A125	00000