1.751" ID Bearings | McMaster-Carr

Install these bearings directly onto hardened and ground shafts. They have higher load capacity, speed, and accuracy than standard needle-roller bearings.

Open Bearing—Open bearings dissipate heat more efficiently than sealed bearings.

Sealed Bearing—Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.

Shaft Liners—Shaft liners allow you to use the bearing on unhardened and unground shafts.

	Bearings												Shaft Liners
				Radial Load Cap., lb.
	For Shaft Dia.	For Housing ID	Wd.	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	For Shaft Surface Smoothness, Ra, μin	Temp. Range, ° F	Features		Each	For Shaft Dia.		Each
For Radial Load—Open with Steel Ring



		1 3/4"	2 5/16"	1"	9,900	19,700	7,600	Required	16	0 to 245	Lubrication Groove, Lubrication Hole	0000000	000000	1 1/2"	000000	000000


		For Radial Load—Sealed with Steel Ring



				1 3/4"	2 5/16"	1 1/4"	9,900	19,700	2,200	Required	16	-30 to 250	Lubrication Groove, Lubrication Hole	00000000	00000	1 1/2"	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.

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.

Extreme-Load Heat-Treated Iron Copper—Our strongest oil-embedded sleeve bearings. They’re heat treated to form a uniform internal grain that makes them stronger than 863 iron copper. As a result, they’re often used to support extreme loads in earth-moving equipment and railroad applications. The increased iron content makes these bearings appear silver.

Mineral Oil Base—Mineral oil consistently lubricates at most temperatures but doesn’t last as long as synthetic oil.

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 3/4"	2"	1"	4,450 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	000000


	1 3/4"	2"	1 1/2"	6,650 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	00000
	1 3/4"	2"	2"	8,900 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	00000
	1 3/4"	2"	3"	13,350 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	00000
	1 3/4"	2"	4"	17,800 lb. @ 30 rpm	Synthetic Oil	-15 to 300	00000000	000000


	Extreme-Load Heat-Treated Iron Copper



			1 3/4"	2"	1"	9,500 lb. @ 30 rpm	Mineral Oil	10 to 350	0000000	00000


			1 3/4"	2"	2"	19,050 lb. @ 30 rpm	Mineral Oil	10 to 350	0000000	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.

Extreme-Load Heat-Treated Iron Copper—Our strongest oil-embedded flanged sleeve bearings. They’re heat treated to form a uniform internal grain that makes them stronger than 863 iron copper. As a result, they’re often used to support extreme loads in earth-moving equipment and railroad applications. The increased iron content makes these bearings appear silver.

Mineral Oil Base—Mineral oil consistently lubricates at most temperatures but doesn’t last as long as synthetic oil.

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



	1 3/4"	2 1/4"	2 1/2"	3"	1/4"	11,100 lb. @ 30 rpm	6,900 lb. @ 30 rpm	Synthetic Oil	-15 to 300	0000000	000000


	Extreme-Load Heat-Treated Iron Copper



			1 3/4"	2 1/4"	2 1/2"	3"	1/4"	23,850 lb. @ 30 rpm	14,800 lb. @ 30 rpm	Mineral Oil	10 to 220	0000000	00000