Bushings for 3" Shafts | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Flange OD Flange OD

6 11/32"

	Dynamic Thrust Load Capacity Dynamic Thrust Load Capacity

66 Products

About Shaft Collars

Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.

About Plain Bearings

About Shaft Couplings

Startup friction causes these porous bronze bearings to release a thin layer of oil on the bearing’s surface. They are also known as Oilite® bearings.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

841 Bronze Bearings

For 3" Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
3 1/4"	1 1/4"	7,500 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000
3 1/4"	2"	12,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
3 1/4"	3"	18,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
3 1/2"	2 1/2"	15,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
3 1/2"	3"	18,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000
3 1/2"	4"	24,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000
4"	6 1/2"	39,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000

High-Load Oil-Embedded Sleeve Bearings

Increased iron content makes these bearings stronger and more resistant to shock loads than standard oil-embedded bearings; however they operate at lower speeds. Startup friction causes them to release a thin layer of oil on the bearing’s surface. Color is silver because of the iron. These bearings are also magnetic due to the high iron content.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

863 Iron-Copper Bearings

For 3" Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
3 1/2"	4"	17,800 lbs. @ 30 rpm	Lubricated	SAE 90 Oil	-15° to 300°	00000000	000000

High-Temperature Dry-Running Sleeve Bearings

Graphite provides a layer of dry lubrication that operates in high-temperature environments.

841 bearing bronze bearings are porous and embedded with graphite for continuous lubrication.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

Embedded

841 Bearing Bronze
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication Method	Temperature Range, °F		Each
For 3" Shaft Dia.
3 1/2"	4"	19,200 lbs. @ 30 rpm	Embedded	-50° to 700°	00000000	0000000

Multipurpose Sleeve Bearings

These 932 bearing bronze bearings are strong, wear resistant, and excellent at handling shock loads. They’re sometimes called 660 leaded bronze bearings.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

932 Bearing Bronze Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Temperature Range, °F		Each
For 3" Shaft Dia.
3 1/2"	4"	38,150 lbs. @ 30 rpm	Required	-350° to 450°	00000000	000000
4"	6 1/2"	62,050 lbs. @ 30 rpm	Required	-350° to 450°	00000000	000000

Oil-Embedded Flanged Sleeve Bearings

Startup friction causes these porous bronze bearings to release a thin layer of oil on the bearing’s surface. They are also known as Oilite® bearings.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

841 Bearing Bronze Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
For 3" Shaft Dia.
3 1/2"	2 3/8"	4"	3/8"	14,250 lbs. @ 30 rpm	8,750 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000

Multipurpose Flanged Sleeve Bearings

These bronze bearings are strong, wear resistant, and excellent at handling shock loads. They’re sometimes called 660 leaded bronze bearings.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

932 Bearing Bronze Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Temperature Range, °F		Each
For 3" Shaft Dia.
3 1/2"	2 3/8"	4"	3/8"	22,650 lbs. @ 30 rpm	13,100 lbs. @ 30 rpm	Required	-350° to 450°	00000000	000000

Taper-Lock Bushings

Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing style. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.

For technical drawings and 3-D models, click on a part number.

		Keyway
For Shaft Dia.	Overall Wd.	Wd.	Dp.	Taper	Fastener Tightening Torque, in.-lbs.	Material	Includes		Each
3020 Style Bushing
3"	2"	3/4"	3/8"	8°	800	Steel	Machine Key, Set Screws	000000000	000000

Self-Adjusting Spring Bushings

A toothed slot lets these bushings contract for insertion into the bore of your sprocket or pulley and then expand for a snug fit. Made of spring steel, they flex under stress and shock and can handle oscillating or slow rotational motion.

For technical drawings and 3-D models, click on a part number.

For 3" Shaft Diameter
OD	Overall Wd.	Material		Each
3 1/2"	1 1/2"	Steel	00000000	000000
3 1/2"	2"	Steel	00000000	00000
3 1/2"	2 1/2"	Steel	00000000	00000
3 1/2"	3"	Steel	00000000	00000

Set Screw Shaft Collars

Keep these shaft collars in place by tightening their set screw into the shaft. The tip of the screw digs in for a secure hold, but will mar the shaft’s surface. For maximum holding power, make sure the set screw material is harder than your shaft material. Use these shaft collars to position and retain power transmission components such as sprockets, pulleys, and bearings. You can also use them to limit the movement of a shaft.

Carbon steel collars are strong and wear resistant. Collars with a black-oxide finish have some corrosion resistance, but only in dry environments. Their dark color can be useful for matching other parts in your system. Collars with a zinc-plated finish have an outer layer of zinc that protects the steel from rust and extends the life of the collar. 303 stainless steel collars are corrosion resistant and highly machinable.

316 stainless steel collars are the most corrosion resistant while still being nearly as strong as steel collars. You can expose them to salt water, chlorine solutions, and chemicals without rusting.

Aluminum collars are lightweight and have good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inch

			Set Screw
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide 1215 Carbon Steel
3"	4 1/4"	1 1/8"	Hex Socket	1	0000000	000000
Zinc-Plated 1215 Carbon Steel
3"	4"	1 1/8"	Hex Socket	1	0000000	00000
303 Stainless Steel
3"	4"	1 1/8"	Hex Socket	1	0000000	000000
316 Stainless Steel
3"	4"	1 1/8"	Hex Socket	1	0000000	000000
6061 Aluminum
3"	4"	1 1/8"	Hex Socket	1	0000000	00000

Washdown Set Screw Shaft Collars

Made of chemical-resistant nylon, these collars are suitable for washdown applications. Slide them onto an unhardened shaft and tighten the set screw, which bites into the shaft to hold it.

For technical drawings and 3-D models, click on a part number.

			Set Screw
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
White Nylon Plastic
3"	4 1/4"	1 1/8"	Hex Socket	1	00000000	0000000

Clamping Shaft Collars

These metal collars are stronger than plastic shaft collars. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.

Black-oxide steel collars have some corrosion resistance. Zinc-plated steel collars have moderate corrosion resistance. Chrome-plated steel collars have moderate corrosion resistance with a bright finish.

Aluminum collars are lightweight and have good corrosion resistance. 303 stainless steel collars have excellent corrosion resistance. 316 stainless steel collars have excellent corrosion and chemical resistance.

For technical drawings and 3-D models, click on a part number.

Inch

			Clamping Screw
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide 1215 Carbon Steel
3"	4 1/4"	7/8"	Socket Head Screw	1	0000000	000000
Zinc-Plated 1215 Carbon Steel
3"	4 1/4"	7/8"	Socket Head Screw	1	0000000	00000
Chrome-Plated 1215 Carbon Steel
3"	4 1/4"	7/8"	Socket Head Screw	1	0000000	00000
2024 Aluminum
3"	4 1/4"	7/8"	Socket Head Screw	1	0000000	00000
303 Stainless Steel
3"	4 1/4"	7/8"	Socket Head Screw	1	00000000	000000
316 Stainless Steel
3"	4 1/4"	7/8"	Socket Head Screw	1	0000000	000000

Washdown Clamping Shaft Collars

Suitable for use in washdown applications, these plastic collars also offer good chemical resistance. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.

Acetal collars have a naturally slippery surface and resist swelling when exposed to moisture.

For technical drawings and 3-D models, click on a part number.

Inch

			Clamping Screw		White Nylon Plastic		White Acetal Plastic
For Shaft Dia.	OD	Wd.	Type	No. Included		Each		Each
3"	4 1/2"	1 1/8"	Socket Head Screw	1	0000000	000000	0000000	000000

Quick-Release Clamping Shaft Collars

Installing and removing a collar is as easy as pushing down and lifting up a clamp lever. Collars clamp evenly around the shaft to create a strong, mar-free hold. All have a clamping screw to adjust lever tension. Made of anodized aluminum, they are lightweight with good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inch

			Clamping Screw		Black Anodized 6061 Aluminum
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
3"	4 3/4"	3/4"	Socket Head Screw	1	00000000	0000000

Quick-Connect Clamping Shaft Collars

Steel and Stainless Steel

Plastic

Internal ball bearings allow you to slide a collar onto your shaft in one direction and then automatically lock the collar in place in the opposite direction. To adjust or remove, pull the end ring back to release the hold.

Zinc-plated steel collars have some corrosion resistance. 303 stainless steel collars have excellent corrosion resistance. ABS plastic collars are durable, lightweight, and corrosion resistant.

For technical drawings and 3-D models, click on a part number.

Zinc-Plated 1215 Carbon Steel
For Shaft Dia.	OD	Wd.	Ball Bearing Material		Each
3"	3 1/2"	1 29/32"	440C Stainless Steel	0000000	0000000
303 Stainless Steel
3"	3 1/2"	1 29/32"	440C Stainless Steel	0000000	000000
Gray ABS Plastic
3"	3 13/16"	2"	Tungsten Carbide	0000000	000000

Extra-Grip Clamping Shaft Collars

With larger clamping screws than those found on standard clamping collars, these provide a stronger grip on your shaft without using additional screws. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure. Collars are black-oxide steel, which offers some corrosion resistance.

For technical drawings and 3-D models, click on a part number.

			Clamping Screw		Black-Oxide 1026 Carbon Steel
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
3"	4 3/4"	1"	Socket Head Screw	1	0000000	000000

Clamping Two-Piece Shaft Collars

Without Keyway

With Keyway

These metal collars are stronger than plastic shaft collars. The two-piece design allows you to install them anywhere on a shaft without removing components or having access to the ends of the shaft. Collars clamp evenly around the shaft to create a strong, mar-free hold. Tighten the clamping screws to secure.

Black-oxide steel collars have some corrosion resistance. Zinc-plated steel and chrome-plated steel collars have moderate corrosion resistance with a bright finish. Aluminum collars are lightweight and have good corrosion resistance. 303 stainless steel collars have excellent corrosion resistance. 316 stainless steel collars have excellent corrosion and chemical resistance.

For technical drawings and 3-D models, click on a part number.

Inch—Without Keyway

			Clamping Screw
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide 1215 Carbon Steel
3"	4 1/2"	3/4"	Socket Head Screw	2	00000000	000000
Black-Oxide 1026 Carbon Steel
3"	4 1/4"	7/8"	Socket Head Screw	2	0000000	00000
Zinc-Plated 1215 Carbon Steel
3"	4 1/4"	7/8"	Socket Head Screw	2	0000000	00000
3"	4 1/2"	3/4"	Socket Head Screw	2	0000000	00000
Chrome-Plated 1215 Carbon Steel
3"	4 1/4"	7/8"	Socket Head Screw	2	00000000	00000
2024 Aluminum
3"	4 1/4"	7/8"	Socket Head Screw	2	00000000	00000
3"	4 1/2"	3/4"	Socket Head Screw	2	00000000	00000
303 Stainless Steel
3"	4 1/4"	7/8"	Socket Head Screw	2	00000000	000000
3"	4 1/2"	3/4"	Socket Head Screw	2	00000000	000000
316 Stainless Steel
3"	4 1/4"	7/8"	Socket Head Screw	2	0000000	000000
3"	4 1/2"	3/4"	Socket Head Screw	2	0000000	000000

Inch—With Keyway

			Keyway		Clamping Screw
For Shaft Dia.	OD	Wd.	Wd.	Dp.	Type	No. Included		Each
Black-Oxide 1215 Carbon Steel
3"	4 1/4"	7/8"	3/4"	3 21/64"	Socket Head Screw	2	0000000	0000000

Washdown Clamping Two-Piece Shaft Collars

Suitable for use in washdown applications, these plastic collars also offer good chemical resistance. The two-piece design allows you to install them anywhere on a shaft without removing components or having access to the ends of the shaft. Collars clamp evenly around the shaft to create a strong, mar-free hold. Tighten the clamping screws to secure.

Acetal collars have a naturally slippery surface and resist swelling when exposed to moisture.

For technical drawings and 3-D models, click on a part number.

Inch

			Clamping Screw		White Nylon Plastic		White Acetal Plastic
For Shaft Dia.	OD	Wd.	Type	No. Included		Each		Each
3"	4 1/2"	1 1/8"	Socket Head Screw	2	00000000	000000	0000000	000000

Extra-Grip Clamping Two-Piece Shaft Collars

For Keyed Shafts

For Round Shafts

With larger screws than those found on standard clamping collars, these provide a stronger grip on your shaft without using additional screws. The two-piece design allows you to install them anywhere on a shaft without removing components or having access to the ends of the shaft. Collars clamp evenly around the shaft to create a strong, mar-free hold. Tighten the clamping screws to secure.

Black-oxide steel collars offer some corrosion resistance.

303 stainless steel collars have excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inch—For Keyed Shafts

			Keyway		Clamping Screw
For Shaft Dia.	OD	Wd.	Wd.	Dp.	Type	Number Included		Each
Black-Oxide 1026 Carbon Steel
3"	4 3/4"	1"	3/4"	3/8"	Socket Head Screw	2	00000000	0000000

Inch—For Round Shafts

			Clamping Screw
For Shaft Dia.	OD	Wd.	Type	Number Included		Each
Black-Oxide 1026 Carbon Steel
3"	4 3/4"	1"	Socket Head Screw	2	0000000	000000
303 Stainless Steel
3"	4 3/4"	1"	Socket Head Screw	2	00000000	000000

Clamping Two-Piece Shaft Collars with Wrench Flats

Use a wrench to rotate your drive shaft without marring or gouging the shaft. Fasten one of these collars onto your shaft, position a wrench on the collar’s wrench flats, and then rotate the entire shaft/collar assembly to adjust the shaft. The two-piece design allows you to install these collars anywhere on a shaft without removing components or having access to the ends of the shaft. Tighten the clamping screws to secure.

Black-oxide steel collars have some corrosion resistance. Aluminum collars are lightweight and strong. 303 stainless steel collars have excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inch

				Clamping Screw		Black-Oxide 1215 Carbon Steel		2024 Aluminum		303 Stainless Steel
For Shaft Dia.	OD	Wd.	Flat-to-Flat Ht.	Type	No. Included		Each		Each		Each
3"	4 1/4"	7/8"	4 1/16"	Socket Head Screw	2	0000000	0000000	0000000	0000000	0000000	0000000

Set Screw Two-Piece Shaft Collars

Tighten the set screw to bite into an unhardened shaft for a secure hold. The two-piece design allows you to install these collars anywhere on a shaft without removing components or having access to the ends of the shaft. Clamping screws provide extra grip.

Carbon steel collars are strong and wear resistant. Their black-oxide finish is somewhat corrosion resistant, but only in dry environments. Their dark color can be useful for matching other parts in your system.

For technical drawings and 3-D models, click on a part number.

Inch

			Set Screw		Clamping Screw
For Shaft Dia.	OD	Wd.	Type	No. Included	Type	No. Included		Each
Black-Oxide 1026 Carbon Steel
3"	4 1/4"	7/8"	Hex Socket	1	Socket Head Screw	2	0000000	000000

Hinged Shaft Collars

Offering the benefits of a two-piece collar in a one-piece design, these collars swing open for positioning then close anywhere on your shaft. Tighten the clamping screw to secure. The screw is captive so it won’t fall out, making these collars good for use in tight areas where you can’t hold the screw in place. Collars clamp evenly around your shaft to create a strong, mar-free hold.

Black-oxide steel collars have some corrosion resistance. 303 stainless steel collars have excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inch

			Clamping Screw		Black-Oxide 1215 Carbon Steel		303 Stainless Steel
For Shaft Dia.	OD	Wd.	Type	No. Included		Each		Each
3"	4 1/2"	3/4"	Socket Head Screw	1	00000000	000000	00000000	0000000

Flange-Mount Shaft Collars

Three tapped counterbored holes and three unthreaded holes provide mounting flexibility. Collars clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screws to secure.

Collars with keyway have a standard ANSI keyway for use with keyed shafts, keys, and key stock.

Black-oxide steel collars are stronger than aluminum and stainless steel collars. They have some corrosion resistance. Aluminum collars are lightweight and have good corrosion resistance. 303 stainless steel collars have excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inch

			Flange		Keyway		Clamping Screw			Counterbored Mounting Holes		Unthreaded Mounting Holes
For Shaft Dia.	OD	Wd.	OD	Thick.	Wd.	Dp.	Type	No. Included	Mounting Fasteners Included	Thread Size	No. of	Dia.	No. of		Each
Black-Oxide 1117 Carbon Steel
3"	4 1/2"	1 3/8"	6 11/32"	1/2"	3/4"	21/64"	Socket Head Screw	2	No	3/8"-16	3	3/8"	3	0000000	0000000
2024 Aluminum
3"	4 1/2"	1 3/8"	6 11/32"	1/2"	3/4"	21/64"	Socket Head Screw	2	No	3/8"-16	3	3/8"	3	0000000	000000
303 Stainless Steel
3"	4 1/2"	1 3/8"	6 11/32"	1/2"	3/4"	21/64"	Socket Head Screw	2	No	3/8"-16	3	3/8"	3	0000000	000000

Face-Mount Shaft Collars

Two tapped holes on the face of these collars allow you to fasten them to gears, pulleys, and sprockets. Collars clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.

Black-oxide steel collars have some corrosion resistance. 303 stainless steel collars have excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Inch

			Clamping Screw			Mounting Holes		Black-Oxide 1026 Carbon Steel		303 Stainless Steel
For Shaft Dia.	OD	Wd.	Type	No. Included	Mounting Fasteners Included	Thread Size	No. of		Each		Each
3"	4 1/4"	7/8"	Socket Head Screw	1	No	5/16"-18	2	0000000	000000	0000000	0000000

Two-Piece Shaft Coupling Bridges

When your shafts are not close enough to use standard couplings, these have the length to bridge the gap. Install them anywhere on a shaft without removing components or having access to the ends of the shaft. Tighten the clamping screws to secure. Good for high-torque applications, rigid couplings connect two shafts that are aligned, allowing for no relative movement between the shafts.

For technical drawings and 3-D models, click on a part number.

Cast Iron
For Shaft Dia.	Overall Lg.	OD	Max. Speed, rpm	Max. Torque, in.-lbs.	For Motion Type		Each
For Keyed Shafts
3"	12"	7 1/4"	2,545	29,000	Forward/Reverse, Start/Stop, Continuous	0000000	000000000