50.01mm ID 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.

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



	50	60	40	6,200 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6658K773	000000


	50	60	50	7,750 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6658K774	00000
	50	60	60	9,300 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6658K775	00000
	50	60	70	10,850 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6658K318	00000


	High-Load 863 Iron Copper



			50	60	40	7,000 lb. @ 30 rpm	Synthetic Oil	-15 to 300	2868T412	00000

Oil-Embedded 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.

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



	50	60	32	70	5	4,950 lb. @ 30 rpm	5,800 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6659K724	000000


	50	60	50	70	5	7,750 lb. @ 30 rpm	5,800 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6659K725	00000


	High-Load 863 Iron Copper



			50	60	32	70	5	5,600 lb. @ 30 rpm	4,700 lb. @ 30 rpm	Synthetic Oil	-15 to 300	2938T825	00000


			50	60	50	70	5	8,750 lb. @ 30 rpm	4,700 lb. @ 30 rpm	Synthetic Oil	-15 to 300	2938T826	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



	50	60	60	9,250 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	ASTM B438	1688K224	000000


	High-Load 863 Iron Copper



			50	60	40	7,000 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	—	7460N232	00000


			50	60	60	10,500 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	—	7460N234	00000

Ultra-Low-Friction Oil-Embedded Flanged Sleeve 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		Each
High-Load 863 Iron Copper



	50	60	32	70	5	5,600 lb. @ 30 rpm	4,700 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	7119N195	000000


	50	60	50	70	5	8,750 lb. @ 30 rpm	4,700 lb. @ 30 rpm	Synthetic Oil	PTFE	-60 to 300	7119N196	00000