Couplings for 7mm Shafts

Filter by

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

Construction

Shaft Type

Shaft Mount Type

Component

Flexible Shaft Coupling Type

Overall Length

For Shaft Misalignment Type

Material

For Rotary Motion

Length

Shaft Coupling Flexibility

Flexible

Maximum Torque

Less than 10,000 in·lbf

Flexible Shaft Coupling Trade Size

Clamping Screw Type

Number of Set Screws Included

Maximum Rotation Speed

Clamping Screw Material

Stainless Steel

Steel

RoHS

Compliant

Compliant with Exemptions

Performance

REACH

DFARS Specialty Metals

Exempt

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

Yes

Export Control Classification Number (ECCN)

EAR99

Forward

How can we improve?

Help me decide (beta)

42 Products

...

Precision Spider Couplings

Position shafts and handle misalignment on precision motors, pumps, and other equipment that requires highly controlled movements. These couplings have a hard, rubber spider to fully transfer torque from one shaft to the other (zero backlash). They're also known as precision jaw couplings. 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.

Aluminum—Lightweight and corrosion resistant.

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

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

	Shaft Mount Type	For Shaft Diameter		Each
Round







	Aluminum

	3/4"	12/19	1 7/64"	Clamp On	7 mm	9845T1	000000


	1"	16/25	1 13/32"	Clamp On	7 mm	9845T2	00000
	19 mm	12/19	27 mm	Set Screw	7 mm	9939T32	00000

Spiders

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

Polyurethane Rubber—Provide a balance of stiffness and moderate vibration damping. Higher-durometer spiders are more rigid for more precise positioning, but they absorb less vibration.

					Misalignment Capability
	For Hub OD	Shaft Coupling Trade Size	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular		Each
Durometer 85A (Hard) Polyurethane Rubber



		3/4", 19 mm	12/19	8,000	10	0.005"	1°	9845T13	000000


		1", 25 mm, 25.4 mm	16/25	8,000	30	0.006"	1°	9845T16	00000


		Durometer 92A (Extra Hard) Polyurethane Rubber



				3/4", 19 mm	12/19	8,000	18	0.004"	0.9°	9845T12	00000


				1", 25 mm, 25.4 mm	16/25	8,000	58	0.005"	0.9°	9845T15	00000


				Durometer 98A (Extra Hard) Polyurethane Rubber



						3/4", 19 mm	12/19	8,000	30	0.003"	0.8°	9845T11	00000


						1", 25 mm, 25.4 mm	16/25	8,000	150	0.003"	0.8°	9845T14	00000

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.

Round—Hubs for the standard shaft type.

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.

	Shaft Mount Type	For Shaft Diameter		Each
Round







	Steel

	27	L050	44	Set Screw	7 mm	6133N12	00000

Spiders

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

Buna-N—Best choice for vibration damping and shock absorption with the lowest stiffness and good tear resistance.

Hytrel—Most direct torque transfer with the highest stiffness and least vibration damping.

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



		1 5/64", 27 mm	L050	18,000	26	0.015"	1°	6408K84	00000


		Hytrel



				1 5/64", 27 mm	L050	18,000	50	0.015"	0.5°	6408K91	00000

High-Parallel-Misalignment Slotted Disc Couplings

Unlike couplings that flex to handle offset shafts, these have a slotted center disc that allows shafts to slide independently to compensate for parallel misalignment. The plastic center disc also helps transmit torque while preventing metal-to-metal contact between hubs, so there's no lubrication required. Also known as Oldham couplings. For a complete coupling, select two hubs and one disc. 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.

Aluminum—Lightweight and corrosion resistant.

303 Stainless Steel—These corrosion-resistant hubs withstand mild cleaning solutions.

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

For Shaft Type	Shaft Mount Type	For Shaft Diameter		Each







Aluminum

3/4"	12/19	1"	Round	Clamp On	7 mm	9889T1	000000




		303 Stainless Steel

		3/4"	12/19	1"	Round	Clamp On	7 mm	9889T82	00000

Discs

With two perpendicular slots (one on each side), these discs allow shafts to slide, adjusting for parallel misalignment.

Acetal—Provide a balance of stiffness and flexibility while withstanding high torque. The best plastic discs for damp and wet environments, these won't swell or lose their strength if exposed to moisture.

Nylon—Keep these wear-resistant discs dry, since they'll swell and weaken if exposed to moisture.

PEEK—Stronger, stiffer, and more wear resistant than nylon and acetal discs.

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



		3/4"	12/19	4,500	20	0.008"	0.5°	0.004"	59985K62	00000


		Nylon



				3/4"	12/19	4,500	5	0.008"	0.5°	0.004"	59985K92	00000


				PEEK



						3/4"	12/19	4,500	20	0.008"	0.5°	0.004"	59985K711	00000

Precision Beam Couplings


Spiral Cut	Parallel Cut

Machined with slits, these one-piece couplings flex to transfer full torque (zero backlash) and compensate for tiny misalignments.

Spiral Cut—Long slits along the surface help the coupling flex and handle greater misalignment than parallel cut couplings. They're also less rigid, so they're best used with light duty machinery, such as encoders and stepper drives. Also known as helical beam couplings.

Parallel Cut—With short, intermittent slits, these couplings are more rigid and handle more torque and speed than spiral cut couplings. However, they don't handle misalignment as well. Use them in linear test systems, scientific instruments, and other high-torque applications.

303 Stainless Steel—More corrosion resistant and stronger than aluminum couplings, these withstand mild cleaning solutions, such as acetone and ammonia.

Aluminum—Lightweight and corrosion resistant.

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

						Misalignment Capability
	For Shaft Diameter	OD, mm	Overall Lg., mm	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel, mm	Angular	Axial, mm	For Shaft Type	Shaft Mount Type		Each
Spiral Cut







				303 Stainless Steel

				7 mm × 10 mm	25	30	6,000	40	0.38	3°	0.25	Round	Clamp On	2463K313	0000000




						Aluminum

						7 mm × 1/4"	25	30	6,000	27	0.38	3°	0.25	Round	Clamp On	2464K18	00000


						7 mm × 3/8"	25	30	6,000	27	0.38	3°	0.25	Round	Clamp On	2464K24	00000
						7 mm × 6 mm	25	30	6,000	27	0.38	3°	0.25	Round	Clamp On	2463K25	00000
						7 mm × 7 mm	25	30	6,000	27	0.38	3°	0.25	Round	Clamp On	2463K26	00000
						8 mm × 7 mm	25	30	6,000	27	0.38	3°	0.25	Round	Clamp On	2463K27	00000
						9 mm × 7 mm	25	30	6,000	27	0.38	3°	0.25	Round	Clamp On	2463K31	00000
						10 mm × 7 mm	25	30	6,000	27	0.38	3°	0.25	Round	Clamp On	2463K35	00000


						Parallel Cut







										Aluminum

										7 mm × 5 mm	16	19.8	10,000	11.1	0.1	2.5°	0.4	Round	Clamp On	8011N228	000000


										7 mm × 5 mm	20	21.5	7,500	21.7	0.12	3°	0.5	Round	Clamp On	8011N251	000000
										7 mm × 7 mm	16	19.8	10,000	11.1	0.1	2.5°	0.4	Round	Clamp On	8011N23	000000
										10 mm × 7 mm	25	34	5,000	34.5	0.4	3°	0.7	Round	Clamp On	8011N173	000000

Servomotor Precision Bonded Couplings

With a bonded rubber center, these couplings damp vibration and accommodate misalignment on servomotors. The center and the lightweight aluminum hubs transfer torque fully (zero backlash) between shafts that start and stop frequently or accelerate at high speeds. They're often used on packaging machines, press brakes, and machinery for semiconductor production.

Aluminum with Fluoroelastomer Center—Lightweight and corrosion-resistant hubs bonded with a flexible rubber center handle corrosive environments, vibration, and shaft misalignment.

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

					Misalignment Capability
For Shaft Diameter	OD	Overall Lg.	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Axial	For Shaft Type	Shaft Mount Type		Each







			Aluminum with Fluoroelastomer Center

			5 mm × 7 mm	3/4"	1 1/32"	30,000	18	0.006"	1.5°	0.008"	Round	Clamp On	6853N11	000000


			6 mm × 7 mm	3/4"	1 1/32"	30,000	18	0.006"	1.5°	0.008"	Round	Clamp On	6853N112	00000

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.

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

Blue Passivated Zinc-Plated Carbon Steel—Withstand moisture and mild chemicals better than standard zinc-plated-steel collars. The blue passivated finish makes it easy to identify metric collars at a glance.

Carbon Steel—Strong and easy to machine. Use in dry environments, since moisture will cause steel to rust.

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
	For Shaft Dia., mm	OD, mm	Wd., mm	Type	No. Included		Each
Blue Passivated Zinc-Plated Carbon Steel



		7	12	8	Hex Socket	1	6057N15	00000


		Carbon Steel



				7	12	8	Hex Socket	1	6056N15	0000


				303 Stainless Steel



						7	12	8	Hex Socket	1	6058N15	0000

Plastic Shaft Collars

Lightweight alternatives to metal collars for weight-sensitive applications. 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.

Acetal—Resist swelling when exposed to moisture.

				Clamping Screw
	For Shaft Dia., mm	OD, mm	Wd., mm	Type	No. Included		Each
Acetal



		7	18	9	Socket Head	1	3761N116	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.

				Clamping Screw
	For Shaft Dia., mm	OD, mm	Wd., mm	Type	No. Included		Each
Acetal



		7	18	9	Socket Head	2	3585N27	000000

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.

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

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



		7	18	9	Socket Head	1	57445K411	00000


		303 Stainless Steel



				7	18	9	Socket Head	1	9616T411	00000

Two-Piece Shaft Collars

For Round 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.

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.

Black Anodized Aluminum—One-third the weight of steel and more corrosion resistant than unfinished aluminum.

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



		7	18	9	Socket Head	2	6063K27	000000


		Zinc-Plated Carbon Steel



				7	18	9	Socket Head	2	5731N12	00000


				316 Stainless Steel



						7	18	9	Socket Head	2	9652T33	00000


						Black Anodized Aluminum



								7	18	9	Socket Head	2	3731N15	00000