55mm 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.

Highly Corrosion-Resistant 316 Stainless Steel—The most corrosion-resistant metal bearings we offer. They won't pit or weaken from salt water or harsh chemicals, such as bleach and chlorine found in cleaning solutions.

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

				35	55	10	1	2,450	12,000	-20	230	Standard	6907	5972K248	000000


				45	55	6	1	580	4,600	-50	130	Standard	6709	6656K136	000000




						Corrosion-Resistant 440C Stainless Steel

						30	55	13	1	2,500	15,000	-40	240	Standard	6006	6153K138	00000




								Highly Corrosion-Resistant 316 Stainless Steel

								30	55	13	Not Rated	270	720	-40	140	Standard	6006	5908K733	00000


								Shielded







												Steel

												30	55	13	3	3,100	14,000	-20	230	Standard	6006-2Z	6661K19	00000


												35	55	10	1	2,450	12,000	-20	230	Standard	6907-2Z	5972K172	00000




														Corrosion-Resistant 440C Stainless Steel

														30	55	13	1	2,500	13,000	-40	240	Standard	6006-2Z	6153K164	00000


														Sealed







																		Steel

																		30	55	13	3	3,100	8,000	-20	210	Standard	6006-2RS	6661K89	00000


35	55																	10	1	2,450	12,000	-20	230	Standard	6907-2RS	5972K294	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.

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

				35	55	10	1	2,450	6,600	10	200	Standard	6907	2349K741	000000




						Corrosion-Resistant 440C Stainless Steel

						30	55	13	1	2,250	7,000	-10	200	Standard	6006	4668K187	00000


						Sealed







										Steel

										30	55	13	1	2,250	7,000	10	200	Standard	6006-2RS	2349K748	00000


										35	55	10	1	2,450	6,600	10	200	Standard	6907-2RS	2349K796	00000




												Corrosion-Resistant 440C Stainless Steel

												30	55	13	1	2,250	7,000	-10	200	Standard	6006-2RS	4668K295	000000


												35	55	10	1	2,450	6,000	-10	200	Standard	6907-2RS	4668K281	00000

Tapered-Roller Bearings

Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.

					Radial Load Cap., lb.		Thrust Load Cap., lb.
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Bearing Trade No.	Dynamic	Static	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	Temp. Range, ° F		Each
For Combined Radial and Thrust Load—Open with Steel Ring



		30	55	13	32006	2,100	10,200	1,550	12,800	3,500	Required	-60 to 200	6677K58	000000


		30	55	13	32006	8,500	10,950	6,250	Not Rated	6,700	Required	-50 to 300	6677K89	00000

Dry-Running Ball Bearings

Made of naturally slippery plastic so there's no lubricant to maintain or make a mess. These bearings are ideal for spic-and-span spaces since oil won't drip off, wash out, or collect dust over time. They won't rust or warp from moisture, so they stand up to thorough cleanings.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, reducing wear and extending the life of the bearing.

Acetal—The most common choice for plastic bearings, acetal is economical yet still stands up to daily wear and tear.

316 Stainless Steel Balls—Won't corrode from salt water or harsh chemicals, such as bleach and chlorine found in cleaning solutions.

						Temp. Range, ° F				316 Stainless Steel Balls
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	ABEC Rating	Bearing Trade No.		Each
Open







				Acetal

				30	55	9	90	700	-40	180	Not Rated	16006	6455K186	000000


				30	55	13	90	700	-40	180	Not Rated	6006	6455K144	00000

High-Precision Angular Contact Ball Bearings

Open

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.

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	Material	Dynamic Combined Load Cap., lbf	Max. Rotation Speed, rpm	Lubrication	Contact Angle	Min.	Max.	Bearing Trade No.		Each
Single Row







				Open

				30	55	13	7	Steel	3,200	32,000	Required	15°	-30	140	7006	2385K46	0000000




						Sealed

						30	55	13	7	Steel	3,550	27,100	Lubricated	15°	0	230	7006	4487N11	000000

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



		30	55	10	1,700	1,850	1,750	Required	0 to 245	—	4489N11	0000000


		For Combined Radial, Thrust, and Moment Load—Sealed with Steel Ring



				30	55	10	1,700	1,850	1,400	Lubricated	0 to 245	Lubrication Groove, Two Lubrication Holes	4489N18	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

				30	55	13	1	2,500	7,000	-40	200	Standard	FDA Compliant 21 CFR 178.3570	6006-2RS	4648K207	0000000


				35	55	10	1	2,050	6,000	-40	200	Standard	FDA Compliant 21 CFR 178.3570	6907-2RS	4648K244	000000

Electrically Insulating Ball Bearings

Sealed

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.

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			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
Sealed







				Steel

				30	55	13	1	3,100	16,000	-40	210	6006-2RZ	1389N16	0000000

Flush-Mount Screw-Clamp Bushings

Insert these bushings into the bore of your sprocket for flush or recessed mounting. They handle shock loads. When you tighten the included clamping screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Steel



	24	55	40	6,650	142	Clamping Screws	1070N11	0000000


	25	55	40	6,950	142	Clamping Screws	1070N12	000000
	30	55	40	8,350	142	Clamping Screws	1070N13	000000

Ball Bearings with Retaining Ring

Sealed

No need for complicated tools—install these bearings by hand inside a housing. The ring stops the bearing from being jostled out of place when it experiences sudden forces parallel to the shaft (thrust loads).

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.

				Retaining Ring, 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
Sealed







				Steel

				30	55	13	60.7	1.12	1	3,100	8,000	-40	210	Standard	6006-2RS	6661K56	000000

Grooved Sleeve Bearings

A figure-8-shaped groove provides a flow path for lubricant and distributes it evenly inside the bearing’s surface. A refill hole on the outside lets you inject your lubricant straight into the groove. 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



	40	55	75	16,250 lb. @ 30 rpm	-350 to 450	7965K857	000000


	45	55	45	10,950 lb. @ 30 rpm	-350 to 450	7965K859	00000
	50	55	50	13,550 lb. @ 30 rpm	-350 to 450	7965K861	00000
	50	55	65	17,600 lb. @ 30 rpm	-350 to 450	7965K862	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.

	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



	50	55	11.5	63	2	550 lb. @ 30 rpm	890 lb. @ 30 rpm	Yellow	-50 to 190	2705T191	000000


	50	55	50	63	2	2,400 lb. @ 30 rpm	890 lb. @ 30 rpm	Yellow	-50 to 190	2705T192	00000

High-Temperature Graphite-Lubricated Sleeve Bearings

Made of a graphite and metal alloy, these bearings stay slippery at high temperatures where oil burns off and other bearings fail. With no need for refills, they require little to no maintenance. You’ll find them in pumps, propellers, and mixers that spin near steam or inside ovens. However, graphite may eventually flake off, dropping flecks and leaving smudges. If you need a spic-and-span space, consider dry-running bearings made of slippery plastic instead. 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.

High-Load Chemical-Resistant 954 Bearing Bronze—The strongest of our bronze bearings. The addition of iron and aluminum makes them exceptionally strong and resistant to chemicals. They’re often used in the most demanding environments, such as salt mines. Also known as aluminum bronze.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load Chemical-Resistant 954 Bearing Bronze



	50	55	50	15,100 lb. @ 30 rpm	-350 to 500	2927T106	000000

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



	35	55	16	Steel	6,600	3,300	-40 to 240	Two Washers	6681K23	000000

Lubrication-Free Corrosion-Resistant Swivel Joints

A slippery PTFE liner reduces wear and eliminates the need for lubrication. Also known as spherical bearings, they support angular misalignment. Press them into a hole or housing where a ball joint rod end won’t fit.

						Temp., ° F
ID, mm	OD, mm	Overall Thk., mm	Housing Thk., mm	Max. Ball Swivel	Static Radial Load Cap., lb.	Min.	Max.	Material		Each



	30	55	37	25	34°	63,150	-50	390	316 Stainless Steel	63215K122	0000000

Flanged 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.

	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 Chemical-Resistant 954 Bearing Bronze



	45	55	65	65	5	20,400 lb. @ 30 rpm	12,050 lb. @ 30 rpm	-350 to 500	2934T168	000000

Corrosion-Resistant Flush-Mount Screw-Clamp Bushings

Insert these nickel-plated steel bushings into the bore of your sprocket for flush or recessed mounting in wet environments. When you tighten the included clamping screws on these bushings, their inner sleeve contracts onto the shaft and their outer sleeve expands to hold your sprocket, pulley, or gear. This keeps bushings from slipping during sudden starts and stops.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Nickel-Plated Steel



	30	55	26	5,050	150	Clamping Screws	5515N12	0000000

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
35 mm ID



		55	30	One End	35	1.378"	0.009 to 0.025	0.053 to 0.072	-0.01 to 0.254	PM	Steel	Rockwell C61	—	96990A968	000000	000000	000000


		40 mm ID



				55	30	One End	40	1.5748"	0.025 to 0.05	0.02 to 0.039	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	96990A646	00000	00000	00000


				55	30	Both Ends	40	1.5748"	0.025 to 0.05	0.02 to 0.039	-0.2 to 0.2	PM	Steel	Rockwell C61	—	97060A634	00000	00000	00000
				55	56	One End	40	1.5748"	0.025 to 0.05	0.02 to 0.039	-0.3 to 0.3	PM	Steel	Rockwell C61	DIN 179	96990A647	00000	00000	00000
				55	56	Both Ends	40	1.5748"	0.025 to 0.05	0.02 to 0.039	-0.3 to 0.3	PM	Steel	Rockwell C61	—	97060A635	00000	00000	00000

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

				M35 × 1.5 mm	Extra Fine	55	11	DIN 1816	3549N23	000000

Bearing Nuts

Carbon Steel

Stepped Face

Often paired with spring lock washers to strengthen their hold, these bearing nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.

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

Stepped Face—Use stepped-face bearing nuts with DIN 462 spring lock washers. You can also use them in pairs or with other bearing nuts. For the nut closer to the bearing, position the stepped face towards the bearing. All meet DIN standards for bearing lockout dimensions.

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.

	Nuts								Bearing Lock Washers
	Thread
	Size	Spacing	OD, mm	Wd., mm	Specs. Met	For Lock Washer Specs. Met		Each		Each
Carbon Steel







				Stepped Face

				M35 × 1.5 mm	Extra Fine	55	11	DIN 1804	DIN 462	3564N23	000000	90407A126	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
40 mm ID



		55	25	40	1.5748"	59	5	0.025 to 0.05	0.02 to 0.039	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	96977A660	000000	000000	000000

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.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

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.
18-8 Stainless Steel







	45 mm ID × 55 mm OD

	0.1	-0.013 to 0.013	0 to 0.28	-0.28 to 0.28	Rockwell B70	ASTM A240	1	98089A182	00000


	0.2	-0.023 to 0.023	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	25	98089A620	0000
	0.3	-0.055 to 0.055	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	25	98089A732	00000
	0.5	-0.064 to 0.064	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	25	98089A842	00000
	1	-0.105 to 0.105	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	10	98089A420	00000
	1.5	-0.14 to 0.14	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	5	98089A156	0000
	2	-0.21 to 0.21	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	5	98089A480	00000


	Carbon Steel







					45 mm ID × 55 mm OD

					1	-0.105 to 0.105	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	10	3088A568	0000


					2	-0.21 to 0.21	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	5	3088A569	0000


					Stress-Resistant Spring Steel







									45 mm ID × 55 mm OD

									0.2	-0.04 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	10	98055A381	0000


									0.3	-0.05 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	10	98055A382	0000
									0.5	-0.05 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	10	98055A383	0000
									1	-0.05 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	DIN 988	10	98055A384	00000