18.04mm OD Bearings | McMaster-Carr

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.

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 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	Flange OD, mm	Flange Thk., mm	Dynamic Radial Load Cap. @ Speed	Dynamic Thrust Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
High-Load 863 Iron Copper



	12	18	8	24	3	350 lb. @ 120 rpm	610 lb. @ 120 rpm	Synthetic Oil	-15 to 300	00000000	00000


	12	18	12	24	3	520 lb. @ 120 rpm	610 lb. @ 120 rpm	Synthetic Oil	-15 to 300	00000000	0000
	12	18	20	24	3	870 lb. @ 120 rpm	610 lb. @ 120 rpm	Synthetic Oil	-15 to 300	00000000	0000
	14	18	18	22	2	1,550 lb. @ 60 rpm	900 lb. @ 60 rpm	Synthetic Oil	-15 to 300	00000000	0000