0.505" ID Bearings | McMaster-Carr

Our simplest-to-use thrust bearings, with no moving parts and no need to lubricate. Their porous surface releases oil over time, so you can install and forget them. While they run in most conditions, oil may drip away if temperatures climb too high. For extremely hot environments, consider graphite-lubricated bearings. All are fabricated, lubricated, and inspected in the U.S.

841 Bearing Bronze—A balance of strength and speed makes these bearings a good choice for most applications. Also known as SAE 841 bearing bronze.

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 run at slower speeds. The increased iron content also makes them 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 if the bearing heats up.

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



	1/2"	1"	1/16"	930 lb. @ 120 rpm	Synthetic Oil	-35 to 300	5906K513	00000


	1/2"	1"	3/32"	930 lb. @ 120 rpm	Synthetic Oil	-35 to 300	5906K535	0000
	1/2"	1"	1/8"	930 lb. @ 120 rpm	Synthetic Oil	-35 to 300	5906K514	0000


	High-Load 863 Iron Copper



			1/2"	1"	3/32"	650 lb. @ 120 rpm	Synthetic Oil	-15 to 300	2879T18	0000

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.

High-Load Ultra-Chemical-Resistant Polyester Fabric-Reinforced PTFE—Woven polyester resin reinforces these PTFE bearings to support loads and speeds comparable to metal bearings. Similar to other PTFE options, they are unaffected by the harsh fluids that other plastics can't handle, including all strong acids and bases.

	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 Ultra-Chemical-Resistant Polyester Fabric-Reinforced PTFE



	1/2"	3/4"	1/2"	1"	1/8"	390 lb. @ 120 rpm	460 lb. @ 120 rpm	Blue	-40 to 150	1523N11	000000


	1/2"	3/4"	3/4"	1"	1/8"	590 lb. @ 120 rpm	460 lb. @ 120 rpm	Blue	-40 to 150	1523N23	00000
	1/2"	3/4"	1"	1"	1/8"	790 lb. @ 120 rpm	460 lb. @ 120 rpm	Blue	-40 to 150	1523N24	00000

Dry-Running Flanged 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.

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.	Flange OD	Flange Thk.	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Color	Temp. Range, ° F	Specs. Met		Each
Ultra-Low-Friction Rulon 641



	1/2"	19/32"	1/2"	7/8"	3/64"	155 lb. @ 120 rpm	145 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K118	000000


	1/2"	19/32"	3/4"	7/8"	3/64"	235 lb. @ 120 rpm	145 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K119	00000
	1/2"	19/32"	1"	7/8"	3/64"	310 lb. @ 120 rpm	145 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K121	00000
	1/2"	3/4"	1/2"	1"	1/8"	155 lb. @ 120 rpm	185 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K122	00000
	1/2"	3/4"	3/4"	1"	1/8"	235 lb. @ 120 rpm	185 lb. @ 120 rpm	White	-400 to 550	FDA Compliant 21 CFR 177.1550, USP Class VI	6371K123	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.

								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 Ultra-Chemical-Resistant Polyester Fabric-Reinforced PTFE



		1/2"	3/4"	1/2"	390 lb. @ 120 rpm	Blue	-40 to 150	1521N11	000000	000000	000000

Oil-Embedded Thrust Bearings for Food and Beverage

Infused with food-grade oil, these bearings are safe for incidental contact with food. The oil is odorless, colorless, and tasteless, so they're common on food production and packaging lines. You can install and forget them since their porous surface releases oil over time. All are fabricated, lubricated, and inspected in the U.S.

If you need a bearing rated for direct contact with food, consider dry-running thrust bearings for food and beverage.

841 Bearing Bronze—A balance of strength and speed makes these bearings a good choice for most applications. Also known as SAE 841 bearing bronze.

	OD	Thk.	Dynamic Thrust Load Cap. @ Speed	Base Oil	Temp. Range, ° F	Specs. Met		Each
841 Bearing Bronze



	1/2"	1"	1/16"	930 lb. @ 120 rpm	Synthetic Oil	-75 to 300	FDA Compliant 21 CFR 178.3570, NSF Registered H1	5429T4	00000