1.251" 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.

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
841 Bearing Bronze



	1 1/4"	1 1/2"	1/2"	1,250 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K782	00000


	1 1/4"	1 1/2"	5/8"	1,550 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K781	0000
	1 1/4"	1 1/2"	3/4"	1,850 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K293	0000
	1 1/4"	1 1/2"	7/8"	2,150 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K779	0000
	1 1/4"	1 1/2"	1"	2,500 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K295	0000
	1 1/4"	1 1/2"	1 1/4"	3,100 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K291	0000
	1 1/4"	1 1/2"	1 3/8"	3,400 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K778	0000
	1 1/4"	1 1/2"	1 1/2"	3,750 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K292	0000
	1 1/4"	1 1/2"	1 3/4"	4,350 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K662	00000
	1 1/4"	1 1/2"	2"	5,000 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K294	00000
	1 1/4"	1 1/2"	2 1/2"	6,250 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K296	00000


	1 1/4"	1 1/2"	3"	7,500 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K455	00000
	1 1/4"	1 1/2"	4"	10,000 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K503	000000
	1 1/4"	1 9/16"	1 1/2"	3,750 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K663	00000
	1 1/4"	1 5/8"	1"	2,500 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K787	00000
	1 1/4"	1 5/8"	1 1/4"	3,100 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K664	00000
	1 1/4"	1 5/8"	1 1/2"	3,750 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K786	00000
	1 1/4"	1 5/8"	1 3/4"	4,350 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K783	00000
	1 1/4"	1 5/8"	2"	5,000 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K784	00000
	1 1/4"	1 5/8"	3"	7,500 lb. @ 30 rpm	Synthetic Oil	-35 to 300	6391K785	00000


	Extreme-Load Heat-Treated Iron Copper



			1 1/4"	1 1/2"	1/2"	4,750 lb. @ 30 rpm	Synthetic Oil	-15 to 300	3741K33	00000


			1 1/4"	1 1/2"	1"	9,500 lb. @ 30 rpm	Mineral Oil	10 to 350	3741K34	00000
			1 1/4"	1 1/2"	2"	19,050 lb. @ 30 rpm	Mineral Oil	10 to 350	3741K35	00000
			1 1/4"	1 1/2"	2 1/2"	23,850 lb. @ 30 rpm	Mineral Oil	10 to 350	3741K36	00000

Precision Needle-Roller Bearings


	Bearing

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.

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 1/4"	1 3/4"	1"	7,900	14,200	11,000	Required	16	0 to 245	Lubrication Groove, Lubrication Hole	7929K45	000000	1"	7929K6	000000

Oil-Embedded Mounted Sleeve Bearings with Two-Bolt Flange

Reduce upkeep with sleeve bearings that lubricate themselves. Made from porous, oil-saturated bronze, they release a thin film of lubrication upon startup to keep shafts spinning. With no moving parts, sleeve bearings withstand dusty, dirty environments better than ball or roller bearings. However, with more friction generated, they're less effective at high speeds. The sturdy housing supports the shaft and secures with a two-bolt flange, the most common type of flanged bearing.

Aluminum Housing—One-third the weight of cast iron but not as strong. Aluminum also resists corrosion.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

		Overall
	For Shaft Dia.	Lg.	Wd.	Flange Thk.	Dynamic Radial Load Cap. @ Speed	Misalignment Capability		Each
840 Bearing Bronze Bearing with Aluminum Housing



		1 1/4"	5"	61/64"	3/8"	2,300 lb. @ 30 rpm	5°	5912K33	000000

High-Temperature Graphite-Lubricated Sleeve Bearings

Made of a graphite and metal alloy, these bearings stay slippery at high temperatures where oil burns off and other bearings fail. With no need for refills, they require little to no maintenance. You’ll find them in pumps, propellers, and mixers that spin near steam or inside ovens. However, graphite may eventually flake off, dropping flecks and leaving smudges. If you need a spic-and-span space, consider dry-running bearings made of slippery plastic instead. 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 932 Bearing Bronze—These bearings are strong enough for sudden starts and stops, plus they resist wear and tear. They are cast from an alloy of leaded tin bronze for uniform rigidity and strength. Also known as 660 leaded bronze bearings.

High-Load Chemical-Resistant 954 Bearing Bronze—The strongest of our bronze bearings. The addition of iron and aluminum makes them exceptionally strong and resistant to chemicals. They’re often used in the most demanding environments, such as salt mines. Also known as aluminum bronze.

	For Housing ID	Lg.	Dynamic Radial Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load 932 Bearing Bronze



	1 1/4"	1 1/2"	1"	4,350 lb. @ 30 rpm	-350 to 450	6405K332	000000


	1 1/4"	1 1/2"	1 1/2"	6,550 lb. @ 30 rpm	-350 to 450	6405K333	00000
	1 1/4"	1 1/2"	2"	8,750 lb. @ 30 rpm	-350 to 450	6405K334	00000
	1 1/4"	1 1/2"	2 1/4"	9,800 lb. @ 30 rpm	-350 to 450	6405K408	00000


	High-Load Chemical-Resistant 954 Bearing Bronze



			1 1/4"	1 1/2"	1 1/2"	7,300 lb. @ 30 rpm	-350 to 500	2927T61	00000


			1 1/4"	1 1/2"	2"	9,750 lb. @ 30 rpm	-350 to 500	2927T62	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
Extreme-Load Heat-Treated Iron Copper



	1 1/4"	1 1/2"	1"	1 3/4"	3/16"	9,500 lb. @ 30 rpm	6,400 lb. @ 30 rpm	Mineral Oil	10 to 220	3731K23	000000


	1 1/4"	1 1/2"	1 1/2"	1 3/4"	3/16"	14,300 lb. @ 30 rpm	6,400 lb. @ 30 rpm	Mineral Oil	10 to 220	3731K25	00000
	1 1/4"	1 1/2"	1 3/4"	1 3/4"	3/16"	16,700 lb. @ 30 rpm	6,400 lb. @ 30 rpm	Mineral Oil	10 to 220	3731K26	00000

Light Duty Oil-Embedded Mounted Sleeve Bearings

With a two-piece housing made from thin pressed metal, these bearings are a cost-effective option when extreme precision isn't necessary. Less stable than bearings with forged, one-piece housings, they're good for hand-cranked systems, gravity feed conveyor rollers, and other low-speed applications. Made from porous, oil-saturated bronze, they release their own lubrication on startup, reducing the need for frequent relubrication.

With no moving parts, sleeve bearings stand up to dusty, dirty environments better than ball or roller bearings. However, with more friction generated, they're less effective at high speeds.

Steel Housing—Best for dry environments as moisture will cause them to rust.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

			Overall
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Dynamic Radial Load Cap. @ Speed	Misalignment Capability		Each
841 Bearing Bronze Bearing with Steel Housing



		1 1/4"	1 3/32"	4 5/8"	1 7/16"	3,550 lb. @ 30 rpm	Not Rated	3813T18	000000

Oil-Embedded Mounted Sleeve Bearings

Reduce upkeep with sleeve bearings that lubricate themselves. Made from porous, oil-saturated bronze, they release a thin film of lubrication upon startup to keep shafts spinning. With no moving parts, they withstand dusty, dirty environments better than ball bearings. However, with more friction generated, they're less effective at high speeds. The sturdy housing bolts down to support shafts as they turn.

Aluminum Housing—One-third the weight of cast iron but not as strong. Aluminum also resists corrosion.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

			Overall
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Dynamic Radial Load Cap. @ Speed	Misalignment Capability		Each
840 Bearing Bronze Bearing with Aluminum Housing



		1 1/4"	1 1/4"	5"	61/64"	2,350 lb. @ 30 rpm	5°	5912K11	000000

Linear Sleeve Bearings

Bearings are for use with round end-supported shafts. To install, slide bearings into a housing (not included) and secure with two retaining rings (sold individually).

Self-Aligning with 2° Misalignment Capability

PTFE Liner

Self-aligning bearings compensate for shaft misalignment.

PTFE Liner—PTFE-lined bearings are chemical resistant and nonabrasive. They have a ceramic coating for added corrosion resistance.

0.001" Shaft Clearance—Bearings with 0.001" shaft clearance are less likely to bind on your shaft than bearings with 0.0005" shaft clearance.

	Bearings															Retaining Rings
											Temp., ° F
	For Shaft Dia.	Shaft Clearance	Overall Lg.	OD	For Housing ID	With Retaining Ring Grooves	Retaining Ring Groove End-to-End Lg.	With End Seals	Dynamic Linear Load Cap. @ Speed	Static Load Cap., lb.	Min.	Max.	For Shaft Material		Each		Each
PTFE-Lined 6061 Aluminum Bearings



		1 1/4"	0.001"	2 5/8"	2"	2.0000" to 2.0010"	Yes	2.055"	No	900 lb. @ 100 fpm	16,000	-400	375	Aluminum, Stainless Steel	9533T7	000000	9968K28	00000

Thrust Bearings

With no moving parts, these bearings are the plainest way to support thrust loads while reducing friction. They don't come with lubricant, so you can choose the oil that's best for your application. Make sure to mount them where they're easy to access, since you'll need to replenish the oil frequently. All are fabricated and inspected in the U.S.

High-Load Chemical-Resistant 954 Bearing Bronze—The addition of iron and aluminum makes these bearings strong and exceptionally chemical resistant. You'll find them in demanding environments, such as salt mines. Also known as aluminum bronze.

	OD	Thk.	Dynamic Thrust Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load Chemical-Resistant 954 Bearing Bronze



	1 1/4"	2"	1/8"	8,600 lb. @ 30 rpm	-350 to 500	2872T13	000000

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.

High-Load 932 Bearing Bronze—Cast from an alloy of leaded tin bronze for uniform rigidity and strength. Also known as 660 leaded bronze.

	OD	Thk.	Dynamic Thrust Load Cap. @ Speed	Temp. Range, ° F		Each
High-Load 932 Bearing Bronze



	1 1/4"	2"	1/8"	6,700 lb. @ 30 rpm	-350 to 450	2855T9	000000

Food and Beverage Linear Sleeve Bearings

Made of FDA-listed materials for use in food applications, these bearings also have excellent chemical and corrosion resistance. They have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included).

Fixed Alignment

With Retaining Ring

Grooves

With Retaining Ring Grooves—For bearings with retaining ring grooves, secure them in your housing with two retaining rings (sold individually).

	Bearings																Retaining Rings
											Temp., ° F
	For Shaft Dia.	Shaft Clearance	Overall Lg.	OD	For Housing ID	With Retaining Ring Grooves	Retaining Ring Groove End-to-End Lg.	With End Seals	Dynamic Linear Load Cap. @ Speed	Static Load Cap., lb.	Min.	Max.	For Shaft Material	Food Industry Std.		Each		Each
Rulon 641-Lined 304 Stainless Steel Bearings



		1 1/4"	0.0025"	2 5/8"	2"	2.0000" to 2.0010"	Yes	2.015"	No	325 lb. @ 100 fpm	3,200	-400	375	Aluminum, Stainless Steel	FDA Compliant 21 CFR 177.1380	6676K35	0000000	9968K28	00000

Ejector Pin Bushings

Eject parts smoothly from your mold. These bushings reduce friction between your ejector pins and plates, so they slide easily and wear out slowly. An external channel directs lubricant into these bushings, so you don’t need to line up your nozzle with the lubrication hole. Once the lubricant is inside, a figure-eight-shaped groove distributes it evenly along the surface.

	OD				Tolerance
	(A)	(B)	(C)	Lg.	ID	OD (A)	OD (B)	OD (C)	Lg.	Lubrication Hole Dia.	Material	Hardness		Each
1.251" ID



		1.624"	1.802"	1.6255"	1 3/4"	0" to 0.0005"	-0.001" to 0"	-0.01" to 0"	0" to 0.0005"	-0.03" to 0"	0.187"	Aluminum Bronze	Brinell 163	8115N15	000000


		1.624"	1.802"	1.6255"	2 1/2"	0" to 0.0005"	-0.001" to 0"	-0.01" to 0"	0" to 0.0005"	-0.03" to 0"	0.187"	Aluminum Bronze	Brinell 163	8115N16	00000

Self-Lubricating Ejector Pin Bushings

Eject parts smoothly from your mold without liquid lubricant—these bushings reduce friction between ejector pins and plates. These bushings have graphite plugs to help the pins slide without wearing your assembly.

	OD				Tolerance
	(A)	(B)	(C)	Lg.	ID	OD (A)	OD (B)	OD (C)	Lg.	Material	Hardness		Each
1.251" ID



		1.624"	1.802"	1.6255"	1 3/4"	0" to 0.0005"	-0.001" to 0"	-0.01" to 0"	0" to 0.0005"	-0.03" to 0"	Aluminum Bronze	Brinell 163	7845N15	000000


		1.624"	1.802"	1.6255"	2 1/2"	0" to 0.0005"	-0.001" to 0"	-0.01" to 0"	0" to 0.0005"	-0.03" to 0"	Aluminum Bronze	Brinell 163	7845N16	00000