1/2"-13 Rod Alignment Couplers

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System of Measurement

Body Material

Misalignment Angle

Shaft Type

Shaft Diameter

Overall Length

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Length

Material

Maximum Pull Force

10,000 lbf to 19,999 lbf

Construction

Shaft Mount Type

For Rotary Motion

For Shaft Misalignment Type

Component

Fabrication

Flexible Shaft Coupling Type

Spider

Spider Material

Buna-N

Hytrel

Set Screw Thread Size

1/2"-13

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10 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



	1/2"-13	Steel	1 1/4"	2 3/4"	14,000	6460T3	000000


	5° of Misalignment



			1/2"-13	Steel	1.56"	2 3/4"	—	6418T14	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
3/4" to 2 1/8"	4 7/8"	4 1/2"	Forward/Reverse, Start/Stop	Sintered	Cup Point	1/2"-13	3530N121	0000000	5,000	1,725	0.015"	1°	-40 to 212	Buna-N	6408K82	000000
3/4" to 2 5/8"	5 11/32"	5"	Forward/Reverse, Start/Stop	Cast	Cup Point	1/2"-13	3530N122	000000	4,200	2,340	0.015"	1°	-40 to 212	Buna-N	6408K62	00000

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
3/4" to 2 1/8"	4 7/8"	4 1/2"	Continuous	Sintered	Cup Point	1/2"-13	3530N221	0000000	5,000	4,680	0.015"	0.5°	-55 to 245	Hytrel	6408K99	0000000
3/4" to 2 5/8"	5 11/32"	5"	Continuous	Cast	Cup Point	1/2"-13	3530N222	000000	4,200	6,225	0.015"	0.5°	-55 to 245	Hytrel	6408K64	000000