Bushings for 1 7/8" Shafts

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

REACH Compliant

	For Housing ID For Housing ID

2 1/4"

	Fastener Tightening Torque Fastener Tightening Torque

	Construction Construction


One Piece	Two Piece

Multipiece

	Dynamic Radial Load Capacity Dynamic Radial Load Capacity

	For Load Direction For Load Direction

	Radial

	Lubrication Method Lubrication Method

Embedded

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52 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 1 7/8" Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
2 1/4"	3/4"	2,800 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000
2 1/4"	2"	7,500 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
2 1/4"	2 1/2"	9,350 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
2 1/4"	3"	11,250 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	10° to 175°	00000000	00000

Quick-Disconnect (QD) Bushings

Clamp On

The screw connections on these bushings easily mate to compatible quick-disconnect sprockets and pulleys. Bushings fit quick-disconnect (QD) sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

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

		Keyway
For Shaft Dia.	Overall Wd.	Wd.	Dp.	Fastener Tightening Torque, in.-lbs.	Material	Includes		Each
Clamp On
SD Style Bushing
1 7/8"	2 3/32"	1/2"	1/16"	108	Cast Iron	Clamping Screws, Machine Key	00000000	000000
SDS Style Bushing
1 7/8"	1 21/32"	1/2"	1/16"	108	Cast Iron	Clamping Screws, Machine Key	00000000	00000
SF Style Bushing
1 7/8"	2 1/2"	1/2"	1/4"	360	Steel	Clamping Screws	00000000	00000
SK Style Bushing
1 7/8"	2 9/32"	1/2"	1/4"	180	Steel	Clamping Screws	00000000	00000

Split-Tapered Bushings

Steel and Cast Iron

The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

Bushings with a machine key fit into a matching keyway on a sprocket or pulley for high-torque applications.

		Keyway
For Shaft Dia.	Overall Wd.	Wd.	Dp.	Taper	Fastener Tightening Torque, in.-lbs.		Each
Steel
Q1 Style Bushing with Machine Key
1 7/8"	2 1/2"	1/2"	1/4"	3°	348	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
2012 Style Bushing
1 7/8"	1 1/4"	1/2"	1/4"	8°	280	Steel	Set Screws	000000000	000000
2517 Style Bushing
1 7/8"	1 3/4"	1/2"	1/4"	8°	430	Steel	Set Screws	000000000	00000
3020 Style Bushing
1 7/8"	2"	1/2"	1/4"	8°	800	Steel	Set Screws	000000000	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
1 7/8"	2 3/4"	7/8"	Hex Socket	1	0000000	000000
Zinc-Plated 1215 Carbon Steel
1 7/8"	2 3/4"	7/8"	Hex Socket	1	0000000	00000
303 Stainless Steel
1 7/8"	2 3/4"	7/8"	Hex Socket	1	0000000	00000
316 Stainless Steel
1 7/8"	2 3/4"	7/8"	Hex Socket	1	0000000	000000
6061 Aluminum
1 7/8"	2 3/4"	7/8"	Hex Socket	1	000000	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
1 7/8"	2 3/4"	7/8"	Hex Socket	1	00000000	000000

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. 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
1 7/8"	2 7/8"	11/16"	Socket Head Screw	1	0000000	000000
Zinc-Plated 1215 Carbon Steel
1 7/8"	2 7/8"	11/16"	Socket Head Screw	1	0000000	00000
2024 Aluminum
1 7/8"	3"	11/16"	Socket Head Screw	1	0000000	00000
303 Stainless Steel
1 7/8"	2 7/8"	11/16"	Socket Head Screw	1	0000000	00000
316 Stainless Steel
1 7/8"	3"	11/16"	Socket Head Screw	1	0000000	00000

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
1 7/8"	4"	3/4"	Socket Head Screw	1	00000000	0000000

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 1215 Carbon Steel
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
1 7/8"	3 1/2"	3/4"	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
1 7/8"	3"	11/16"	Socket Head Screw	2	0000000	000000
Zinc-Plated 1215 Carbon Steel
1 7/8"	2 7/8"	11/16"	Socket Head Screw	2	0000000	00000
Chrome-Plated 1215 Carbon Steel
1 7/8"	3"	11/16"	Socket Head Screw	2	0000000	00000
2024 Aluminum
1 7/8"	3"	11/16"	Socket Head Screw	2	00000000	00000
303 Stainless Steel
1 7/8"	3"	11/16"	Socket Head Screw	2	00000000	00000
316 Stainless Steel
1 7/8"	3"	11/16"	Socket Head Screw	2	0000000	00000

Inch—With Keyway

			Keyway		Clamping Screw
For Shaft Dia.	OD	Wd.	Wd.	Dp.	Type	No. Included		Each
Black-Oxide 1215 Carbon Steel
1 7/8"	2 7/8"	11/16"	1/2"	2 3/32"	Socket Head Screw	2	0000000	000000

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
1 7/8"	3 1/4"	15/16"	Socket Head Screw	2	00000000	000000	0000000	000000

Extra-Grip Clamping Two-Piece Shaft Collars

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.

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

Inch—For Round Shafts

			Clamping Screw
For Shaft Dia.	OD	Wd.	Type	Number Included		Each
Black-Oxide 1215 Carbon Steel
1 7/8"	3 1/2"	3/4"	Socket Head Screw	2	0000000	000000

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 1215 Carbon Steel
1 7/8"	3"	11/16"	Hex Socket	1	Socket Head Screw	2	0000000	000000

Weldable Two-Piece Shaft Collars

For Round Shafts

Install these collars anywhere on a shaft without removing components or having access to the ends of the shaft. Because they’re grade 1018 carbon steel, you can easily weld them to other components. Collars clamp evenly around the shaft to create a strong, mar-free hold. Tighten the clamping screws to secure.

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

Inch

			Clamping Screw		1018 Carbon Steel
For Shaft Dia.	OD	Wd.	Type	No. Included		Each
For Round Shafts
1 7/8"	3"	11/16"	Socket Head Screw	2	00000000	000000

Set Screw Flexible Shaft Couplings

Hubs and Spider Shown Assembled

(Each Component Sold Separately)

Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place. Also known as Lovejoy® couplings, these three-piece couplings have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment.

Buna-N spiders provide good vibration damping and chemical resistance. Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders and split spiders provide fair vibration damping and good chemical resistance.

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

Iron Hubs and Buna-N Rubber Spiders

							Buna-N Rubber Spiders
Iron Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
4 1/2"	3 3/4"	Keyed	Forward/Reverse, Start/Stop	1 7/8"	0000000	0000000	5,000	1,240	0.015"	1°	-40° to 212°	0000000	000000
4 7/8"	4 1/2"	Keyed	Forward/Reverse, Start/Stop	1 7/8"	0000000	000000	5,000	1,725	0.015"	1°	-40° to 212°	0000000	00000
5 11/32"	5"	Keyed	Forward/Reverse, Start/Stop	1 7/8"	0000000	000000	4,200	2,340	0.015"	1°	-40° to 212°	0000000	00000

Iron Hubs and Hytrel Rubber Spiders

							Hytrel Rubber Spiders
Iron Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
4 1/2"	3 3/4"	Keyed	Forward/Reverse, Start/Stop	1 7/8"	0000000	0000000	3,600	3,705	0.015"	0.5°	-55° to 245°	0000000	0000000
4 7/8"	4 1/2"	Keyed	Forward/Reverse, Start/Stop	1 7/8"	0000000	000000	5,000	4,680	0.015"	0.5°	-55° to 245°	0000000	000000
5 11/32"	5"	Keyed	Forward/Reverse, Start/Stop	1 7/8"	0000000	000000	4,200	6,225	0.015"	0.5°	-55° to 245°	0000000	000000

Iron Hubs and Polyurethane Spiders

							Polyurethane Spiders
Iron Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
4 1/2"	3 3/4"	Keyed	Forward/Reverse, Start/Stop	1 7/8"	0000000	0000000	3,600	1,860	0.015"	1°	-30° to 160°	0000000	0000000

High-Torque Set Screw Flexible Shaft Couplings

(Each Component Sold Separately)

Hubs, Split Spider, and Split Spider Cover Shown Assembled

The thick split spider on these couplings takes on twice as much torque as standard split spiders, while a set screw holds the hubs in place on your shaft. Also known as jaw couplings, use them to connect motors to pumps, mixers, and other high-torque equipment. You don’t need to lubricate them.

For a complete coupling, you’ll need two hubs, one split spider, and a split spider cover (all sold separately).

Hubs attach to the end of your shaft.

Split spiders cushion between the two hubs to dampen vibration, reduce shocks, and handle shaft misalignment, extending the life of bearings, seals, and motors. You can replace them without having to remove the hubs or move your shaft and equipment around, which reduces the risk of needing to realign the shaft. Spiders with medium-soft hardness are the most commonly used and are good for applications that start, stop, and reverse often. Those with medium hardness handle higher torque than those with medium-soft hardness, but they don’t reduce vibration as well.

Split spider covers hold the spider in place.

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

Steel Hubs and Medium-Soft (Durometer 48D) Spiders

						Urethane Split Spiders
Steel Hubs								Misalignment Capability						Steel Split Spider Covers
Overall Lg.	OD	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F	Color		Each		Each
6 1/16"	3 33/64"	Forward/Reverse, Start/Stop	1 7/8"	000000	0000000	6,000	7,065	0.038"	2°	-60° to 212°	Red	0000000	000000	0000000	0000000

Steel Hubs and Medium (Durometer 60D) Spiders

						Urethane Split Spiders
Steel Hubs								Misalignment Capability						Steel Split Spider Covers
Overall Lg.	OD	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F	Color		Each		Each
6 1/16"	3 33/64"	Forward/Reverse, Start/Stop	1 7/8"	000000	0000000	6,000	14,000	0.038"	2°	-60° to 212°	Blue	0000000	000000	0000000	0000000

Steel Hubs and Medium (Durometer 60D) Spiders—350° F Max. Temp.

						Urethane Split Spiders
Steel Hubs								Misalignment Capability						Steel Split Spider Covers
Overall Lg.	OD	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F	Color		Each		Each
6 1/16"	3 33/64"	Forward/Reverse, Start/Stop	1 7/8"	000000	0000000	6,000	14,000	0.038"	2°	-60° to 350°	White	0000000	0000000	0000000	0000000

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About Shaft Collars

About Plain Bearings

About Shaft Couplings

Oil-Embedded Sleeve Bearings

Quick-Disconnect (QD) Bushings

Split-Tapered Bushings

Taper-Lock Bushings

Set Screw Shaft Collars

Washdown Set Screw Shaft Collars

Clamping Shaft Collars

Quick-Release Clamping Shaft Collars

Extra-Grip Clamping Shaft Collars

Clamping Two-Piece Shaft Collars

Washdown Clamping Two-Piece Shaft Collars

Extra-Grip Clamping Two-Piece Shaft Collars

Set Screw Two-Piece Shaft Collars

Weldable Two-Piece Shaft Collars

Set Screw Flexible Shaft Couplings

High-Torque Set Screw Flexible Shaft Couplings