40mm Spacers | McMaster-Carr

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.

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.

Nylon—The most popular choice, nylon is wear resistant yet economical. Keep in mind, though, that it will swell and weaken when exposed to moisture.

Moisture-Resistant Acetal—These bearings won’t warp or swell from humidity or direct contact with water, unlike nylon.

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 Moisture-Resistant Rulon LR—Won’t swell in wet or humid places, similar to acetal, but can support higher loads. These bearings also operate smoothly from cryogenic to oven-like temperatures.

								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
Nylon



		30	40	25	310 lb. @ 30 rpm	Off-White	-10 to 220	00000000	000000	000000	000000


		30	40	60	750 lb. @ 30 rpm	Off-White	-10 to 220	0000000	00000	00000	00000
		32	40	30	370 lb. @ 30 rpm	Off-White	-10 to 220	00000000	00000	00000	00000


		Moisture-Resistant Acetal



				30	40	40	540 lb. @ 30 rpm	White	-20 to 180	0000000	00000	00000	00000


				Ultra-Chemical-Resistant PTFE



						30	40	40	200 lb. @ 30 rpm	White	-350 to 500	0000000	00000	00000	00000


						High-Load Moisture-Resistant Rulon LR



								30	40	40	1,850 lb. @ 30 rpm	Maroon	-400 to 550	0000000	000000	000000	000000

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



	25	40	50	7,750 lb. @ 60 rpm	-350 to 450	00000000	000000


	25	40	100	15,500 lb. @ 60 rpm	-350 to 450	00000000	00000
	30	40	20	3,700 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	30	5,550 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	40	7,400 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	50	9,300 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	65	12,050 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	75	13,950 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	100	18,600 lb. @ 30 rpm	-350 to 450	00000000	00000
	35	40	40	8,650 lb. @ 30 rpm	-350 to 450	00000000	00000
	35	40	50	10,850 lb. @ 30 rpm	-350 to 450	00000000	00000


	35	40	75	16,250 lb. @ 30 rpm	-350 to 450	00000000	00000
	35	40	100	21,700 lb. @ 30 rpm	-350 to 450	00000000	00000

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.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load 932 Bearing Bronze



	25	40	100	13,550 lb. @ 60 rpm	-350 to 450	00000000	000000


	30	40	25	4,050 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	40	6,500 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	50	8,100 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	75	12,200 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	100	16,250 lb. @ 30 rpm	-350 to 450	00000000	00000

Oil-Embedded 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.

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.

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.

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	Dynamic Radial Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	30	40	20	1,850 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	000000


	30	40	25	2,300 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	30	40	30	2,750 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	30	40	40	3,700 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	30	40	50	4,650 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	30	40	60	5,550 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	32	40	20	1,950 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	32	40	25	2,450 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	32	40	30	2,950 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	32	40	32	3,150 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000
	32	40	40	3,950 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000


	High-Load 863 Iron Copper



			30	40	25	4,350 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	00000


			30	40	40	7,000 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	00000
			32	40	32	5,600 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	00000

Flanged Sleeve Bearings

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.

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	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



	30	40	25	50	5	5,200 lb. @ 30 rpm	8,750 lb. @ 30 rpm	-350 to 500	00000000	000000


	30	40	30	50	5	6,250 lb. @ 30 rpm	8,750 lb. @ 30 rpm	-350 to 500	00000000	00000
	30	40	40	50	5	8,350 lb. @ 30 rpm	8,750 lb. @ 30 rpm	-350 to 500	00000000	00000
	35	40	25	45	2.5	6,100 lb. @ 30 rpm	4,350 lb. @ 30 rpm	-350 to 500	00000000	00000

Dry-Running Sleeve Bearings for Food and Beverage

Made of plastics permitted by the US FDA for contact with food, these bearings won’t release harmful, smelly, and distasteful impurities into your food or beverage production line. These self-lubricating plastics eliminate the need for oil, resulting in less maintenance and improved hygiene. You’ll find them inside food-processing equipment such as mixers, conveyors, and fillers.

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.

Moisture-Resistant UHMW Polyethylene—Virtually nonabsorbent, these bearings will keep their shape after washdowns. However, they aren’t suitable for high-temperature treatments such as steam cleaning.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Color	Temp. Range, ° F	Specs. Met		Each
Moisture-Resistant UHMW Polyethylene



	30	40	40	400 lb. @ 30 rpm	White	-200 to 180	FDA Compliant 21 CFR 177.1520	0000000	000000

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.

	For Housing ID, mm	Lg., mm	Dynamic Radial Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load 932 Bearing Bronze



	30	40	25	4,050 lb. @ 30 rpm	-350 to 450	00000000	000000


	30	40	40	6,500 lb. @ 30 rpm	-350 to 450	00000000	00000
	30	40	55	8,950 lb. @ 30 rpm	-350 to 450	00000000	00000


	High-Load Chemical-Resistant 954 Bearing Bronze



			30	40	40	7,250 lb. @ 30 rpm	-350 to 500	00000000	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



	30	40	30	2,750 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	ASTM B438	00000000	000000


	32	40	32	3,150 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	ASTM B438	00000000	00000


	High-Load 863 Iron Copper



			30	40	25	4,350 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	—	00000000	00000


			30	40	30	5,250 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	—	00000000	00000
			30	40	40	7,000 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	—	00000000	00000

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	Temp. Range, ° F		Each
841 Bearing Bronze



	35	40	25	45	2.5	2,700 lb. @ 30 rpm	1,900 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	000000


	35	40	32	45	2.5	3,450 lb. @ 30 rpm	1,900 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	00000


	High-Load 863 Iron Copper



			35	40	25	45	2.5	4,350 lb. @ 30 rpm	2,400 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	00000


			35	40	32	45	2.5	5,600 lb. @ 30 rpm	2,400 lb. @ 30 rpm	Synthetic Oil	-15 to 300	0000000	00000

High-Speed Linear Sleeve Bearings

A ceramic liner makes high speeds as well as rapid acceleration and deceleration possible. Bearings are for use with round end-supported shafts. They have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure with two retaining rings (sold individually).

Fixed Alignment

Image of Product. Front orientation. Contains Annotated. Linear Bearings. High-Speed Linear Sleeve Bearings .

	Linear Bearings															Retaining Rings
											Temp., ° F
	For Shaft Dia., mm	Shaft Clearance, 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 Linear Load Cap. @ Speed	Static Load Cap., lb.	Min.	Max.	For Shaft Material		Each	Pkg. Qty.		Pkg.
Ceramic-Lined 6061 Aluminum Bearings



		25	0.0127 to 0.0381	58	40	40 mm	Yes	40	No	500 lb. @ 100 fpm	11,250	-200	400	Stainless Steel, Steel	0000000	000000	1	0000000	00000

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



	30	40	40	3,700 lb. @ 30 rpm	Synthetic Oil	-75 to 300	FDA Compliant 21 CFR 178.3570	00000000	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



	35	40	25	45	2.5	2,700 lb. @ 30 rpm	1,900 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	ASTM B438	00000000	000000


	High-Load 863 Iron Copper



			35	40	32	45	2.5	5,600 lb. @ 30 rpm	2,400 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	—	00000000	00000