0.877" ID Bearings | McMaster-Carr

Small but mighty, our thinnest rolling thrust bearings slot into tight spaces and spin at whirring speeds. Their long, slender rollers support thrust loads and reduce friction in everything from machine tool spindles to gearboxes.

A cage holds the rollers in place. You can install these bearings without washers between hardened, ground surfaces for the thinnest profile. If you’re working with unhardened, unground surfaces, you’ll need two washers for the rollers to run on. This three-piece design is easy to lubricate, but the oil will attract dust and grime since it’s exposed.

Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.

	Thrust Bearings									Thin Washers			Thick Washers
	For Shaft Dia.	OD	Thk.	Cage Material	Dynamic Thrust Load Cap., lb.	Max. Rotation Speed, rpm	Temp. Range, ° F		Each	Thk.		Each	Thk.		Each
Steel



		7/8"	1 7/16"	5/64"	Steel	2,900	8,000	0 to 240	5909K34	00000	0.032"	5909K47	00000	0.126"	5909K61	00000


		7/8"	1 11/16"	5/64"	Steel	4,400	7,500	0 to 240	5909K35	0000	0.032"	5909K48	0000	—	———	0

Washers for Needle-Roller Thrust Bearings

These hardened steel washers protect softer shafts and housings from the rolling contact of needle rollers. Without them, needle rollers can indent and score unhardened surfaces, leading to premature wear and bearing failure. Positioned between the bearing and each mating surface, these washers distribute thrust loads evenly and extend service life. They adapt needle-roller thrust bearings for unhardened, unground surfaces.

For Shaft Dia.	OD	Thk.	Washer Material		Each
7/8"	1 7/16"	0.032"	Steel	5909K47	00000
7/8"	1 7/16"	0.126"	Steel	5909K61	0000
7/8"	1 11/16"	0.032"	Steel	5909K48	0000

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.

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

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
841 Bearing Bronze



	7/8"	1"	1 1/8"	1,950 lb. @ 60 rpm	Mineral Oil	10 to 220	6391K385	00000


	7/8"	1 1/4"	1"	1,750 lb. @ 60 rpm	Synthetic Oil	-35 to 300	6391K647	00000
	7/8"	1 1/4"	1 1/4"	2,150 lb. @ 60 rpm	Mineral Oil	10 to 220	6391K389	0000
	7/8"	1 1/4"	1 1/2"	2,600 lb. @ 60 rpm	Mineral Oil	10 to 220	6391K391	0000

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.

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.

	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



	7/8"	1"	1/2"	1 1/4"	3/16"	1,100 lb. @ 60 rpm	1,100 lb. @ 60 rpm	Synthetic Oil	-15 to 300	2938T705	00000


	7/8"	1"	1"	1 1/4"	3/16"	2,200 lb. @ 60 rpm	1,100 lb. @ 60 rpm	Synthetic Oil	-15 to 300	2938T706	0000
	7/8"	1 1/8"	3/4"	1 1/2"	1/8"	1,650 lb. @ 60 rpm	1,700 lb. @ 60 rpm	Synthetic Oil	-15 to 300	2938T56	0000
	7/8"	1 1/8"	1"	1 1/2"	1/8"	2,200 lb. @ 60 rpm	1,700 lb. @ 60 rpm	Synthetic Oil	-15 to 300	2938T57	0000
	7/8"	1 1/8"	1 1/4"	1 1/2"	1/8"	2,750 lb. @ 60 rpm	1,700 lb. @ 60 rpm	Synthetic Oil	-15 to 300	2938T58	0000

Dry-Running 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.

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.

MDS-Filled Nylon—A step up from standard nylon bearings. Upgraded with fine particles of molybdenum disulfide (MDS), these bearings have extra lubricity and wear resistance. However, they’re still nylon and will swell and weaken when exposed to moisture.

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



		7/8"	1 1/8"	1 1/8"	210 lb. @ 60 rpm	Black	-40 to 170	6294K104	000000	00000	00000

High-Temperature Graphite-Lubricated Thrust Bearings

Keep parts spinning in temperatures as hot as 750° F. Lubricated with graphite, these bearings stay slippery where oil would burn off or solidify. You can install and forget them since the lubricant lasts forever. 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.

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



	7/8"	1 1/2"	1/16"	1,850 lb. @ 60 rpm	-50 to 700	7447K23	00000


	7/8"	1 1/2"	1/8"	1,850 lb. @ 60 rpm	-50 to 700	7447K24	0000

Ultra-Low-Friction Oil-Embedded Thrust Bearings

Our slipperiest metal thrust bearings glide on machines with frequent starts and stops, such as conveyors. Their oil contains nonstick PTFE particles that reduce wear and heat, extending the life of your equipment. 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.

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



	7/8"	1 1/2"	1/16"	2,300 lb. @ 60 rpm	Synthetic Oil	PTFE	-35 to 270	7421K23	00000


	7/8"	1 1/2"	1/8"	2,300 lb. @ 60 rpm	Synthetic Oil	PTFE	-35 to 270	7421K24	0000

Oil-Embedded Thrust Bearings

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.

Extreme-Load Heat-Treated Iron Copper—Our strongest oil-embedded thrust 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 also makes them appear silver.

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

	OD	Thk.	Dynamic Thrust Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
Extreme-Load Heat-Treated Iron Copper



	7/8"	1 1/2"	1/16"	3,700 lb. @ 60 rpm	Mineral Oil	-11 to 400	3750K23	00000


	7/8"	1 1/2"	1/8"	3,700 lb. @ 60 rpm	Mineral Oil	-11 to 400	3750K24	0000