3/8"-16 Rod Alignment Couplers

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System of Measurement

Overall Length

Body Material

Material

Misalignment Angle

Maximum Pull Force

Shaft Diameter

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

REACH

RoHS

Length

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Shaft Type

Round

Shaft Mount Type

Set Screw

For Shaft Misalignment Type

Construction

For Rotary Motion

Set Screw Thread Size

3/8"-16

Component

Hub

Flexible Shaft Coupling Type

Spider Material

Fabrication

9 Products

Rod Alignment Couplers

Angle of Misalignment

Increase cylinder life by fixing alignment problems between air or hydraulic cylinders and driven components. Couplers have a threaded end that moves to compensate for the angle of misalignment, reducing wear on cylinder bearings and seals. Couplers have a male and female end.

	Body Material	OD	Overall Lg.	Max. Pull Force, lbf		Each
1° of Misalignment



	3/8"-16	Steel	7/8"	1 7/8"	5,000	6460T2	000000


	2° of Misalignment



			3/8"-16	Steel	7/8"	2"	8,300	6184K54	00000


			5° of Misalignment



					3/8"-16	Steel	1.56"	2 1/4"	—	6418T13	000000

Machinable-Bore Flexible Shaft Couplings


	(Each Component Sold Separately)

Customize the bore of these flexible couplings to align uncommon shaft sizes as well as shafts that have become undersized from wear or oversized from coatings. 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. A complete coupling consists of two hubs and one spider (all components sold separately). Fasten to your shaft with set screws (not included), which bite into the shaft for a secure hold. If the spider fails, the hubs will lock together, giving you time to shut down your equipment to prevent component damage and replace the spider. These couplings do not need lubrication.

Iron Hubs and Buna-N Spiders

Buna-N—Buna-N spiders are the most commonly used because they damp the most vibration, making them best for forward/reverse and start/stop motion. They resist oil and chemicals.

Hubs									Buna-N Spiders
					For Set Screw						Misalignment Capability
For Shaft Dia.	Overall Lg.	OD	For Rotary Motion	Fabrication	Type	Thread Size		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
5/8" to 1 7/8"	4 1/2"	3 3/4"	Forward/Reverse, Start/Stop	Sintered	Cup Point	3/8"-16	3530N119	0000000	5,000	1,240	0.015"	1°	-40 to 212	Buna-N	6408K81	000000

Iron Hubs and Polyurethane Spiders

Polyurethane Rubber—Polyurethane spiders can run at a higher torque than Buna-N spiders, but do not offer as much vibration damping. Use them for continuous motion. Similar to Buna-N, they resist oil and chemicals.

Hubs									Polyurethane Spiders
					For Set Screw						Misalignment Capability
For Shaft Dia.	Overall Lg.	OD	For Rotary Motion	Fabrication	Type	Thread Size		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
5/8" to 1 7/8"	4 1/2"	3 3/4"	Continuous	Sintered	Cup Point	3/8"-16	3530N319	0000000	3,600	1,860	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K19	0000000

Iron Hubs and Hytrel Spiders

Hytrel—Hytrel spiders operate at the highest torque, but are less flexible than Buna-N and polyurethane spiders so they have less misalignment and vibration damping capabilities. Use them for continuous motion. Compared to Buna-N and polyurethane, these have the best oil and chemical resistance.

Hubs									Hytrel Spiders
					For Set Screw						Misalignment Capability
For Shaft Dia.	Overall Lg.	OD	For Rotary Motion	Fabrication	Type	Thread Size		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
5/8" to 1 7/8"	4 1/2"	3 3/4"	Continuous	Sintered	Cup Point	3/8"-16	3530N219	0000000	3,600	3,705	0.015"	0.5°	-55 to 245	Hytrel	6408K98	0000000