Couplings for 48mm Shafts

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9.500 mm to 25.000 mm

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9.500 mm to 35.000 mm

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19 Products

Set Screw Flexible Shaft Couplings


Hubs, Split Spider, and Retaining Ring Shown Assembled	(Each Component Sold Separately)

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.

A complete coupling consists of two hubs and one spider, or two hubs, one split spider, and one retaining ring (all components sold separately). Split spiders are easier to install and replace than standard spiders because there’s no need for tools or removing your hubs. Twist-lock them in place using a retaining ring.

Buna-N—Buna-N spiders provide good vibration damping and chemical resistance.

Hytrel—Hytrel spiders provide fair vibration damping and excellent chemical resistance.

Hubs							Buna-N Spiders								Hytrel Spiders
									Misalignment Capability								Misalignment Capability
Overall Lg., mm	OD, mm	For Shaft Type	For Rotary Motion	For Shaft Dia., mm		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each







			Steel Hubs

			115	96	Keyed	Forward/Reverse, Start/Stop	48	6133N21	000000	5,000	1,240	0.015"	1°	-40 to 212	Buna-N	6408K81	000000	3,600	3,705	0.015"	0.5°	-55 to 245	Hytrel	6408K98	0000000


			137	127	Keyed	Forward/Reverse, Start/Stop	48	6133N23	000000	4,200	2,340	0.015"	1°	-40 to 212	Buna-N	6408K62	00000	4,200	6,225	0.015"	0.5°	-55 to 245	Hytrel	6408K64	000000

High-Speed Vibration-Damping Flexible Shaft Couplings


	(Each Component Sold Separately)

Use these gear-shaped couplings for high-speed and high-torque applications. A rubber center allows flexing so couplings can take on multiple types of misalignment while damping vibration and shock. With no metal-to-metal contact, there’s no need for lubrication. Fasten to your shafts by tightening the set screws, which bite into the shaft to hold it.

A complete coupling consists of two hubs and one center (each component sold separately).

Hubs have a keyway, except hubs for 1⁄4" and 3⁄8" shaft dia. do not have a keyway.

	Hubs						Shaft Coupling Centers
									Misalignment Capability
	Overall Lg.	OD	For Rotary Motion	For Shaft Dia., mm		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Axial	Temp. Range, ° F	Material		Each
Cast Iron Hubs



		4 7/16"	5 29/64"	Continuous	48	6507K12	000000	4,500	1,135	0.02"	1°	0.125"	-30 to 275	TPE	6507K75	000000


		5 1/16"	6 23/64"	Continuous	48	6507K7	000000	3,750	1,800	0.025"	1°	0.125"	-30 to 275	TPE	6507K76	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.

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



		48	78	19	Socket Head	2	6063K57	000000


		Zinc-Plated Carbon Steel



				48	78	19	Socket Head	2	5731N27	00000


				303 Stainless Steel



						48	78	19	Socket Head	2	9731N23	000000


						316 Stainless Steel



								48	78	19	Socket Head	2	9652T54	000000


								Aluminum



										48	78	19	Socket Head	2	7731N22	00000

Quick-Release Shaft Collars with Lever

Flip the lever to install, reposition, and remove these collars. They clamp firmly and evenly without marring your shaft.

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

				Clamping Screw
	For Shaft Dia., mm	OD, mm	Wd., mm	Type	No. Included		Each
Black Anodized Aluminum



		48	100	19	Socket Head	1	1511K272	0000000

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



		48	70	18	Hex Socket	1	6057N41	000000


		Carbon Steel



				48	70	18	Hex Socket	1	6056N41	00000


				303 Stainless Steel



						48	70	18	Hex Socket	1	6058N41	00000