0.313" OD Bearings | 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.

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 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.

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.

Ultra-Low-Friction Rulon J—These bearings glide effortlessly for applications with frequent starts and stops, such as conveyor systems.

	For Housing ID	Lg.	Flange OD	Flange Thk.	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Color	Temp. Range, ° F		Each
High-Load PEEK



	3/16"	5/16"	1/4"	7/16"	1/16"	195 lb. @ 120 rpm	220 lb. @ 120 rpm	Black	-20 to 450	6627K403	00000


	3/16"	5/16"	1/2"	7/16"	1/16"	390 lb. @ 120 rpm	220 lb. @ 120 rpm	Black	-20 to 450	6627K404	00000
	1/4"	5/16"	1/4"	1/2"	1/32"	195 lb. @ 120 rpm	230 lb. @ 120 rpm	Black	-20 to 450	6627K405	0000
	1/4"	5/16"	1/2"	1/2"	1/32"	390 lb. @ 120 rpm	230 lb. @ 120 rpm	Black	-20 to 450	6627K406	00000


	High-Load Moisture-Resistant Rulon LR



			3/16"	5/16"	1/4"	7/16"	1/16"	46 lb. @ 120 rpm	85 lb. @ 120 rpm	Maroon	-400 to 550	6362K211	0000


			3/16"	5/16"	1/2"	7/16"	1/16"	90 lb. @ 120 rpm	85 lb. @ 120 rpm	Maroon	-400 to 550	6362K212	0000
			1/4"	5/16"	1/4"	1/2"	1/32"	60 lb. @ 120 rpm	90 lb. @ 120 rpm	Maroon	-400 to 550	6362K203	00000
			1/4"	5/16"	1/2"	1/2"	1/32"	125 lb. @ 120 rpm	90 lb. @ 120 rpm	Maroon	-400 to 550	6362K204	00000


			Ultra-Low-Friction Rulon J



					3/16"	5/16"	1/4"	7/16"	1/16"	35 lb. @ 120 rpm	65 lb. @ 120 rpm	Gold	-400 to 550	6377K26	0000


					3/16"	5/16"	1/2"	7/16"	1/16"	70 lb. @ 120 rpm	65 lb. @ 120 rpm	Gold	-400 to 550	6377K25	0000
					1/4"	5/16"	1/4"	1/2"	1/32"	46 lb. @ 120 rpm	70 lb. @ 120 rpm	Gold	-400 to 550	6377K103	00000
					1/4"	5/16"	1/2"	1/2"	1/32"	90 lb. @ 120 rpm	70 lb. @ 120 rpm	Gold	-400 to 550	6377K104	00000

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.

Ultra-Low-Friction Rulon J—These bearings glide effortlessly for applications with frequent starts and stops, such as conveyor systems.

Harsh-Environment Vespel® Polyimide—The top choice for equipment exposed to extreme cold, heat, and chemicals. Vespel® bearings also support heavy loads at high speeds.

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



		3/16"	5/16"	1/4"	195 lb. @ 120 rpm	Black	-40 to 500	6621K115	00000	00000	00000


		3/16"	5/16"	3/8"	290 lb. @ 120 rpm	Black	-40 to 500	6621K116	0000	0000	0000
		3/16"	5/16"	1/2"	390 lb. @ 120 rpm	Black	-40 to 500	6621K117	00000	0000	0000
		1/4"	5/16"	1/4"	195 lb. @ 120 rpm	Black	-40 to 500	6621K118	0000	0000	0000
		1/4"	5/16"	1/2"	390 lb. @ 120 rpm	Black	-40 to 500	6621K119	00000	0000	0000


		High-Load Moisture-Resistant Rulon LR



				3/16"	5/16"	1/4"	46 lb. @ 120 rpm	Maroon	-400 to 550	6362K111	0000	0000	0000


				3/16"	5/16"	3/8"	70 lb. @ 120 rpm	Maroon	-400 to 550	6362K112	0000	0000	0000
				3/16"	5/16"	1/2"	90 lb. @ 120 rpm	Maroon	-400 to 550	6362K113	0000	0000	0000
				1/4"	5/16"	1/4"	60 lb. @ 120 rpm	Maroon	-400 to 550	6362K3	00000	00000	0000
				1/4"	5/16"	1/2"	125 lb. @ 120 rpm	Maroon	-400 to 550	6362K4	00000	00000	00000


				Ultra-Low-Friction Rulon J



						3/16"	5/16"	1/4"	35 lb. @ 120 rpm	Gold	-400 to 550	6377K47	0000	0000	0000


						3/16"	5/16"	3/8"	50 lb. @ 120 rpm	Gold	-400 to 550	6377K46	0000	0000	0000
						3/16"	5/16"	1/2"	70 lb. @ 120 rpm	Gold	-400 to 550	6377K45	0000	0000	0000
						1/4"	5/16"	1/4"	46 lb. @ 120 rpm	Gold	-400 to 550	6377K3	00000	0000	0000
						1/4"	5/16"	1/2"	90 lb. @ 120 rpm	Gold	-400 to 550	6377K4	00000	00000	00000


						Harsh-Environment Vespel® Polyimide



								1/4"	5/16"	1/4"	300 lb. @ 120 rpm	Black	-400 to 550	58315K5	00000	00000	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.

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	Lg.	Dynamic Radial Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
High-Load 863 Iron Copper



	1/4"	5/16"	1/4"	250 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2868T42	00000


	1/4"	5/16"	1/2"	500 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2868T43	0000
	1/4"	5/16"	3/4"	750 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2868T44	0000

Oil-Embedded Flanged Sleeve Bearings

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

	For Housing ID	Lg.	Flange OD	Flange Thk.	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	3/16"	5/16"	1/4"	7/16"	1/16"	90 lb. @ 120 rpm	245 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6338K563	00000


	3/16"	5/16"	3/8"	7/16"	1/16"	140 lb. @ 120 rpm	245 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6338K564	0000
	3/16"	5/16"	1/2"	7/16"	1/16"	185 lb. @ 120 rpm	245 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6338K311	0000


	High-Load 863 Iron Copper



			3/16"	5/16"	1/2"	7/16"	1/16"	370 lb. @ 120 rpm	310 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2938T28	0000

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.

Ultra-Low-Friction Rulon 641—Get effortless motion with strength surpassing UHMW polyethylene. Rulon 641 bearings can also operate from cryogenic to oven-like temperatures.

	For Housing ID	Lg.	Dynamic Radial Load Cap. @ Speed	Color	Temp. Range, ° F	Specs. Met		Each
Ultra-Low-Friction Rulon 641



	3/16"	5/16"	1/4"	46 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K5	000000


	3/16"	5/16"	3/8"	70 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K6	00000
	1/4"	5/16"	1/4"	60 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K9	00000
	1/4"	5/16"	1/2"	125 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K11	00000