Couplings for 2 15/16" Shafts

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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

Material

Maximum Torque

20,000 in·lbf to 29,999 in·lbf

Keyway Width

Overall Length

Shaft Mount Type

Set Screw Material

For Rotary Motion

Clamping Screw Material

Stainless Steel

Steel

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

RoHS

Compliant

Number of Clamping Screws Included

Clamping Screw Type

Keyway Depth

Length

Fabrication

Maximum Rotation Speed

2,545 rpm

Rotation Speed

Less than 10,000 rpm

Torque

20,000 in·lbf to 29,999 in·lbf

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18 Products

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



	2 15/16"	12"	7 1/4"	2,545	29,000	Forward/Reverse, Start/Stop, Continuous	6417K18	000000000

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.

						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



		2 15/16"	4 3/4"	1"	Socket Head	2	8386K53	0000000	3/4"	3/8"	8386K617	0000000

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.

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.

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



		2 15/16"	4 1/4"	7/8"	Socket Head	2	6436K56	000000


		Zinc-Plated Carbon Steel



				2 15/16"	4 1/4"	7/8"	Socket Head	2	2380K61	00000


				Chrome-Plated Carbon Steel



						2 15/16"	4 1/4"	7/8"	Socket Head	2	3370K121	00000


						303 Stainless Steel



								2 15/16"	4 1/4"	7/8"	Socket Head	2	6436K119	000000


								316 Stainless Steel



										2 15/16"	4 1/4"	7/8"	Socket Head	2	9633T54	000000


										Aluminum



												2 15/16"	4 1/4"	7/8"	Socket Head	2	6436K172	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.

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.

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



		2 15/16"	4 1/4"	1 1/8"	Hex Socket	1	9414T51	000000


		Zinc-Plated Carbon Steel



				2 15/16"	4"	1 1/8"	Hex Socket	1	6432K48	00000


				303 Stainless Steel



						2 15/16"	4"	1 1/8"	Hex Socket	1	6462K48	000000


						Aluminum



								2 15/16"	4"	1 1/8"	Hex Socket	1	9946K62	00000

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



		2 15/16"	4 3/4"	1"	Socket Head	1	9951K53	000000

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.

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



		2 15/16"	4 1/4"	7/8"	Hex Socket	1	Socket Head	2	1069N18	000000	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.

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

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



		2 15/16"	4 1/4"	7/8"	Socket Head	1	6435K76	000000


		Zinc-Plated Carbon Steel



				2 15/16"	4 1/4"	7/8"	Socket Head	1	9961K61	00000


				Aluminum



						2 15/16"	4 1/4"	7/8"	Socket Head	1	6157K61	00000