Couplings for 1 15/16" Shafts

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Bearing Adapter Sleeves

Flexible Shaft Couplings

Rigid Shaft Couplings

Shaft Collars

System of Measurement

Shaft Diameter

6.000 mm to 10.000 mm

6.000 mm to 12.000 mm

6.000 mm to 16.000 mm

6.000 mm to 20.000 mm

7 mm

8 mm

9 mm

9.500 mm to 25.000 mm

9.500 mm to 30.000 mm

9.500 mm to 35.000 mm

10 mm

11 mm

12 mm

12.500 mm to 40.000 mm

Shaft Type

Construction

Keyway Width

Material

Component

For Shaft Misalignment Type

Number of Teeth

For Rotary Motion

Keyway Depth

Maximum Torque

Less than 10,000 in·lbf

10,000 in·lbf to 19,999 in·lbf

Shaft Mount Type

Length

Overall Length

Set Screw Material

Flexible Shaft Coupling Type

Chain

Spider

Tire

Number of Set Screws Included

Shaft Coupling Flexibility

Flexible

Rigid

Maximum Rotation Speed

DFARS Specialty Metals

Exempt

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

RoHS

50 Products

Spider Couplings

With two hubs gripping a rubbery spider in the center, these couplings damp vibration and transfer torque while flexing to handle misaligned shafts. The metal hubs never touch each other, so there's no need for lubrication. Also known as Lovejoy® couplings. For a complete coupling, select two hubs and one spider or two hubs, one split spider, and one retaining ring. Choose components with the same trade size to ensure they'll fit together.

Hubs

The metal body mounts onto shafts to transmit torque from one shaft to the other through the flexible center.

Keyed—Mount onto shafts with a matching keyway.

Iron—Best for dry environments, since moisture will cause these hubs to rust.

Set-Screw Shaft Mount—Screws dig into your shaft for a secure hold.

	Shaft Mount Type	Choose a Shaft Dia.		Each
Keyed







	Iron

	4 1/2"	L190	4 7/8"	Set Screw	1 15/16"	6408K21	0000000


	5"	L225	5 11/32"	Set Screw	1 15/16"	6408K22	000000

Spiders

A flexible center fits between hubs to enable torque transfer and damp vibration.

Buna-N—Highly tear resistant and the best choice to absorb vibration and shock.

Hytrel—Stiffer than Buna-N, these spiders transmit torque from one shaft to the other almost fully but offer minimal vibration damping.

					Misalignment Capability
	For Hub OD	Shaft Coupling Trade Size	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular		Each
Buna-N



		4 1/2", 115 mm	L190	5,000	1,725	0.015"	1°	6408K82	000000


		5", 127 mm	L225	4,200	2,340	0.015"	1°	6408K62	00000


		Hytrel



				4 1/2", 115 mm	L190	5,000	4,680	0.015"	0.5°	6408K99	000000


				5", 127 mm	L225	4,200	6,225	0.015"	0.5°	6408K64	000000

High-Torque Chain Couplings

A rugged roller chain locks onto teeth on the hubs to withstand high torque. Often found in conveyors, mixers, and crushers, these couplings also compensate for high angular misalignment. Lubricate to maintain smooth motion. For a complete coupling, select two hubs and one roller chain. Choose components of the same trade size to ensure they'll fit together.

Hubs

The metal body mounts onto shafts to transmit torque from one shaft to the other through the flexible center.

Steel—Best for dry environments, since moisture will cause these hubs to rust.

Set-Screw Shaft Mount—Screws dig into your shaft for a secure hold.

Optional Nylon Covers—Withstand grease lubricant and protect hubs from abrasion and corrosion.

Hubs								Optional Nylon Covers
OD	Shaft Coupling Trade Size	Overall Lg.	For Shaft Type	Shaft Mount Type	Choose a Shaft Dia.		Each	OD		Each







			Steel

			5"	6018	3 29/64"	Keyed	Set Screw	1 15/16"	6407K44	000000	6 3/8"	6407K74	0000000

Roller Chain

Lock onto teeth on the hubs to transmit high torque.

Steel—Best for dry environments, since moisture will cause this roller chain to rust.

					Misalignment Capability		Roller Chain
	For Hub OD	Shaft Coupling Trade Size	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Trade No.	Standard		Each
Steel



		5"	6018	3,000	10,900	0.012"	1.5°	60-2	ANSI	6407K54	000000

High-Misalignment Tire Couplings

With a large, flexible rubber tire, these withstand the highest misalignment of any coupling while reducing vibration. For a complete coupling, select two hubs, one tire, and two bushings. Choose components of the same trade size to ensure they'll fit together.

Hubs

The metal body mounts onto shafts to transmit torque from one shaft to the other through the flexible center.

Iron and Steel Hub—Best for dry environments, since moisture will cause these hubs to rust.

Clamp-On Shaft Mount—Grip shafts evenly without marring them and hold tighter than set screws. Tighten the clamping screws to secure.

	Hubs						Quick-Disconnect Bushings
	OD	Shaft Coupling Trade Size	Overall Lg.	Shaft Mount Type		Each	Bushing Trade No.	Choose a Shaft Diameter		Each
Iron and Steel Hub



		8 5/16"	L150	4 5/8"	Clamp On	6241K14	0000000	SDS	1/2", 9/16", 5/8", 3/4", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8", 1 11/16", 1 3/4", 1 7/8", 1 15/16", 2"	6086K13	000000


		9 1/4"	L190	5 11/16"	Clamp On	6241K15	000000	SK	1/2", 5/8", 3/4", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8", 1 11/16", 1 3/4", 1 7/8", 1 15/16", 2", 2 1/8", 2 3/16", 2 1/4", 2 3/8", 2 7/16", 2 1/2", 2 5/8"	6086K15	00000

Tires

Fit these highly flexible rubber tires over the two hubs. They transmit torque, compensate for misalignment, and isolate shock and vibration.

Buna-N—Highly tear resistant.

					Misalignment Capability
	For Hub OD	Shaft Coupling Trade Size	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Axial		Each
Buna-N



		8 5/16"	L150	3,100	3,600	0.125"	4°	0.313"	6241K24	0000000


		9 1/4"	L190	2,800	4,350	0.125"	4°	0.313"	6241K25	000000

Clamping Rigid Shaft Couplings

Designed to grip evenly around your shaft, clamping couplings provide more holding power than set screw couplings without marring the shaft. Slide onto the end of your shaft and 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.

Steel


For Keyed Shafts	For Round Shafts

	Overall Lg.	OD	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion		Each
For Keyed Shafts



	1 15/16" × 1 15/16"	4 7/8"	3 3/8"	4,000	13,600	Forward/Reverse, Start/Stop, Continuous	61005K97	0000000


	For Round Shafts



			1 15/16" × 1 15/16"	4 7/8"	3 3/8"	4,000	13,600	Forward/Reverse, Start/Stop, Continuous	61005K88	000000

303 Stainless Steel

For Round Shafts

Stainless steel couplings have excellent corrosion resistance.

	Overall Lg.	OD	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion		Each
For Round Shafts



	1 15/16" × 1 15/16"	4 7/8"	3 3/8"	4,000	8,200	Forward/Reverse, Start/Stop, Continuous	61005K94	0000000

Two-Piece Rigid 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.

Cast Iron

Image of Product. Front orientation. Rigid Shaft Couplings. Two-Piece Rigid Shaft Coupling Bridges .

	Overall Lg.	OD	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion		Each
For Keyed Shafts



	1 15/16"	8 5/8"	5 1/2"	3,635	8,500	Forward/Reverse, Start/Stop, Continuous	6417K14	0000000

Bearing Adapter Sleeves

Make up for imperfections and gaps between your bearing and shaft for a tight fit. These bearing adapter sleeves are the most common way to mount a bearing with a tapered bore onto a cylindrical seat. They work with both straight and stepped shafts. Secure using the included lock nut.

Inch

	For Shaft Dia.	ID	Wd.	Includes		Each
Low-Carbon Steel



	SNW-11	1 15/16"	1 15/16"	1.855"	Lock Nut, Lock Washer	4449N17	000000

Flange-Mount Shaft Collars

Use the tapped and unthreaded holes on the flange to mount components as needed. To install, slide these collars from one end of your shaft and tighten the clamping screws. The collars grip firmly and evenly without marring the shaft, so you can reposition or remove them later. Collars with keyways have a standard ANSI keyway to lock in place shafts, keys, and key stock.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.

Aluminum—One-third the weight of steel and corrosion resistant.

				Flange		Keyway			Clamping Screw			Mounting Holes		Unthreaded Mounting Holes
	For Shaft Dia.	OD	Wd.	OD	Thk.	Wd.	Dp.	For Shaft Type	Type	No. Included	Mounting Fasteners Included	Thread Size	No. of	Dia.	No. of		Each
Black-Oxide Carbon Steel



		1 15/16"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9684T33	0000000


		303 Stainless Steel



				1 15/16"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9692T42	000000


				Aluminum



						1 15/16"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9793T23	000000

Set Screw Shaft Collars

Slide these traditional collars from one end of the shaft and tighten the set screw. They dig into the shaft for a secure hold, but one that leaves a gouge. For maximum holding power, make sure the set screw is harder than the shaft.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

Zinc-Plated Carbon Steel—A step up from plain carbon steel collars, these withstand occasional exposure to moisture.

303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.

316 Stainless Steel—More corrosion resistant than 303 stainless steel collars. These collars withstand salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.

Aluminum—One-third the weight of steel and corrosion resistant.

				Set Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide Carbon Steel



		1 15/16"	3"	7/8"	Hex Socket	1	9414T36	000000


		Zinc-Plated Carbon Steel



				1 15/16"	3"	7/8"	Hex Socket	1	6432K42	00000


				303 Stainless Steel



						1 15/16"	3"	7/8"	Hex Socket	1	6462K42	00000


						316 Stainless Steel



								1 15/16"	3"	7/8"	Hex Socket	1	9943K46	00000


								Aluminum



										1 15/16"	3"	7/8"	Hex Socket	1	9946K44	00000

Shaft Collars

Slide these collars from one end of your shaft and tighten the clamping screw. They grip firmly and evenly without marring the shaft, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

Zinc-Plated Carbon Steel—A step up from plain carbon steel collars, these withstand occasional exposure to moisture.

303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.

316 Stainless Steel—More corrosion resistant than 303 stainless steel collars. These collars withstand salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.

Aluminum—One-third the weight of steel and corrosion resistant.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide Carbon Steel



		1 15/16"	3"	11/16"	Socket Head	1	6435K83	000000


		Zinc-Plated Carbon Steel



				1 15/16"	3"	11/16"	Socket Head	1	9961K43	00000


				303 Stainless Steel



						1 15/16"	3"	11/16"	Socket Head	1	6435K84	00000


						316 Stainless Steel



								1 15/16"	3"	11/16"	Socket Head	1	9421T33	00000


								Aluminum



										1 15/16"	3"	11/16"	Socket Head	1	6157K44	00000

Two-Piece Shaft Collars

For Round Shafts

For Keyed Shafts

Attach these collars anywhere along your shaft, which helps when other components are already installed or you can't access the end. They clamp firmly and evenly without marring the shaft, so you can reposition or remove collars later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

Zinc-Plated Carbon Steel—A step up from plain carbon steel collars, these withstand occasional exposure to moisture.

Chrome-Plated Carbon Steel—Resist moisture and mild cleaning solutions better than zinc-plated collars.

303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.

316 Stainless Steel—More corrosion resistant than 303 stainless steel collars. These collars withstand salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.

Aluminum—One-third the weight of steel and corrosion resistant.

						For Round Shafts		For Keyed Shafts
				Clamping Screw				Keyway
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each	Wd.	Dp.		Each
Black-Oxide Carbon Steel



		1 15/16"	3"	11/16"	Socket Head	2	6436K66	000000	1/2"	7/32"	3357K42	000000


		Zinc-Plated Carbon Steel



				1 15/16"	3"	11/16"	Socket Head	2	2380K43	00000	—	—	———	0


				Chrome-Plated Carbon Steel



						1 15/16"	3"	11/16"	Socket Head	2	3370K85	00000	—	—	———	0


						303 Stainless Steel



								1 15/16"	3"	11/16"	Socket Head	2	6436K103	00000	1/2"	7/32"	3329K42	000000


								316 Stainless Steel



										1 15/16"	3"	11/16"	Socket Head	2	9633T36	00000	—	—	———	0


										Aluminum



												1 15/16"	3"	11/16"	Socket Head	2	6436K155	00000	—	—	———	0

Hinged Shaft Collars

Combine the versatility of a two-piece collar with the no-fuss installation of a one-piece design. These hinged collars swing open and shut onto your shaft when other components are already attached or you can't access the ends. The clamping screw is captive so it won't fall out, and it aligns itself in the hole when the collar swings shut.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide Carbon Steel



		1 15/16"	3 1/4"	5/8"	Socket Head	1	57145K86	000000

Oversized Shaft Collars

Wider and thicker with a larger clamping screw, these shaft collars deliver a stronger grip than standard collars. Slide them from one end of your shaft and tighten the screw. They clamp firmly and evenly without marring the shaft, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide Carbon Steel



		1 15/16"	3 1/2"	3/4"	Socket Head	1	9951K19	000000

Plastic Two-Piece Shaft Collars

Lightweight alternatives to metal two-piece collars for weight-sensitive applications. Attach these collars anywhere along a shaft when other components are already installed or you can't access the ends. They clamp firmly and evenly without marring the shaft, so you can reposition or remove them later.

Acetal—Resist swelling when exposed to moisture.

Nylon—Will swell and weaken when exposed to moisture, so they're best for dry environments.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Nylon



		1 15/16"	3 1/4"	15/16"	Socket Head	2	60485K79	000000


		Acetal



				1 15/16"	3 1/4"	15/16"	Socket Head	2	9708T28	00000

Set Screw Two-Piece Shaft Collars

Attach these traditional collars anywhere along a shaft when other components are already installed or you can't access the ends. Their set screw digs into the shaft for a tight, permanent hold, but one that leaves a gouge. For maximum holding power, make sure the set screw is harder than the shaft.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.

				Set Screw		Clamping Screw			Each
	For Shaft Dia.	OD	Wd.	Type	No. Included	Type	No. Included		1-24	25-Up
Black-Oxide Carbon Steel



		1 15/16"	3"	11/16"	Hex Socket	1	Socket Head	2	1069N13	000000	000000


		303 Stainless Steel



				1 15/16"	3"	11/16"	Hex Socket	1	Socket Head	2	1069N34	00000	00000

Oversized Two-Piece Shaft Collars


For Round Shafts	For Keyed Shafts

Wider and thicker with larger clamping screws, these deliver a more powerful hold than standard two-piece collars. Attach them anywhere along a shaft when other components are already installed or you can't access the ends. They grip evenly without marring the shaft, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.

						For Round Shafts		For Keyed Shafts
				Clamping Screw				Keyway
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each	Wd.	Dp.		Each
Black-Oxide Carbon Steel



		1 15/16"	3 1/2"	3/4"	Socket Head	2	8386K19	000000	1/2"	1/4"	8386K612	000000


		303 Stainless Steel



				1 15/16"	3 1/2"	3/4"	Socket Head	2	8386K625	000000	—	—	———	0