Made-to-Order Shaft Couplings

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Shaft Diameter

Performance

Shaft Type

System of Measurement

Inch

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Shaft Coupling Connection

Construction

Overall Length

Material

For Shaft Misalignment Type

Shaft Mount Type

Keyway Width

For Rotary Motion

Shaft Coupling Flexibility

Length

Maximum Torque

Less than 10,000 in·lbf

10,000 in·lbf to 19,999 in·lbf

Number of Clamping Screws Included

Maximum Rotation Speed

Clamping Screw Material

Steel

Clamping Screw Type

Socket Head

Rotation Speed

Less than 10,000 rpm

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

Yes

DFARS Specialty Metals

REACH

RoHS

Export Control Classification Number (ECCN)

EAR99

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140 Products

Made-to-Order Clamping Rigid Shaft Couplings

When you need a strong hold and even grip on shafts that are oversized due to finishes, undersized from wear, or uncommonly sized, we’ll make a coupling for you that fits just right. Tell us your shaft diameters to the nearest 0.001” or 0.1 mm.

These couplings clamp around your shafts to prevent marring them. But, you need access to the end of each shaft to slide them into place. Because they’re rigid, they don’t allow movement between shafts, making them good for high-torque jobs. This also means your shafts must align to connect.

Through-Bore Rigid Shaft Couplings—For Keyed Shafts


	Through Bore

To Order: For keyed through-bore shaft couplings, please specify your shaft diameter in 0.001” or 0.1 mm increments within the range listed. Also specify the keyway size that matches your shafts.

Through-bore couplings connect same-size shafts.

Couplings for keyed shafts have keyways that are sized to fit ANSI standard machine keys. Insert a key between the coupling and shaft to lock the coupling in place and transmit high levels of torque without slipping.

Choose a Shaft Diameter	Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion	Choose a Keyway Size (Wd. × Dp.)		Each
0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	830	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32"	6707N1	0000000
0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	3,380	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	6707N97	000000
0.500" to 1.000"	3"	2"	Steel	6,500	3,560	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	6707N25	000000
0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	5,080	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	6707N37	000000
0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	6,100	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	6707N52	000000
0.750" to 1.750"	4 1/2"	3"	Steel	4,000	10,820	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	6707N4	000000
0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	12,360	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	6707N43	000000
9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	830	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm	6707N19	000000
9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	3,380	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	6707N31	000000
12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	3,560	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6707N12	000000
12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	5,080	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6707N59	000000
19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	6,100	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	6707N67	000000
19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	10,820	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	6707N87	000000
19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	12,360	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	6707N76	000000

Through-Bore Rigid Shaft Couplings—For Round Shafts


	Through Bore

To Order: For through-bore shaft couplings, please specify your shaft diameter in 0.001” or 0.1 mm increments within the range listed.

Through-bore couplings connect same-size shafts.

Choose a Shaft Diameter	Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion		Each
0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	625	Forward/Reverse, Start/Stop, Continuous	3509N11	0000000
0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	2,540	Forward/Reverse, Start/Stop, Continuous	3509N12	000000
0.500" to 1.000"	3"	2"	Steel	6,500	2,670	Forward/Reverse, Start/Stop, Continuous	3509N13	000000
0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	3,810	Forward/Reverse, Start/Stop, Continuous	3509N14	000000
0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	4,575	Forward/Reverse, Start/Stop, Continuous	3509N15	000000
0.750" to 1.750"	4 1/2"	3"	Steel	4,000	8,110	Forward/Reverse, Start/Stop, Continuous	3509N16	000000
0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	9,275	Forward/Reverse, Start/Stop, Continuous	3509N17	000000
9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	625	Forward/Reverse, Start/Stop, Continuous	3509N51	000000
9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	2,540	Forward/Reverse, Start/Stop, Continuous	3509N52	000000
12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	2,670	Forward/Reverse, Start/Stop, Continuous	3509N53	000000
12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	3,810	Forward/Reverse, Start/Stop, Continuous	3509N54	000000
19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	4,575	Forward/Reverse, Start/Stop, Continuous	3509N55	000000
19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	8,110	Forward/Reverse, Start/Stop, Continuous	3509N56	000000
19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	9,275	Forward/Reverse, Start/Stop, Continuous	3509N57	000000

Step-Down Rigid Shaft Couplings—For Keyed Shafts


	Step Down

To Order: For keyed step-down shaft couplings, please specify your shaft diameter for each end of the coupling in 0.001” or 0.1 mm increments within the ranges listed. Also specify the keyway sizes that match your shafts.

Step-down couplings connect different-size shafts.

Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion	Choose a Shaft Dia. (A)	Choose a Shaft Dia. (B)	Choose a Keyway Size (Wd. × Dp.) for Shaft Dia. (A)	Choose a Keyway Size (Wd. × Dp.) for Shaft Dia. (B)		Each
1 7/8"	1 1/4"	Steel	7,500	370	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.500"	0.375" to 0.500"	3/32" × 3/32", 1/8" × 3/32"	3/32" × 3/32", 1/8" × 3/32"	6387N53	0000000
1 7/8"	1 1/4"	Steel	7,500	370	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.500"	9.6 mm to 12.7 mm	3/32" × 3/32", 1/8" × 3/32"	4 mm × 2 mm, 5 mm × 2.3 mm	6387N463	000000
2 5/8"	1 3/4"	Steel	7,500	1,500	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.750"	0.375" to 0.750"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	6387N396	000000
2 5/8"	1 3/4"	Steel	7,500	1,500	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.750"	9.6 mm to 19.0 mm	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	6387N58	000000
3"	2"	Steel	6,500	1,580	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.000"	0.500" to 1.000"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	6387N35	000000
3"	2"	Steel	6,500	1,580	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.000"	12.7 mm to 25.4 mm	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6387N142	000000
3 3/8"	2 1/4"	Steel	5,500	2,250	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.250"	0.500" to 1.250"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	6387N125	000000
3 3/8"	2 1/4"	Steel	5,500	2,250	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.250"	12.7 mm to 31.7 mm	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6387N202	000000
3 3/4"	2 1/2"	Steel	4,000	2,710	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.500"	0.750" to 1.500"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	6387N221	000000
3 3/4"	2 1/2"	Steel	4,000	2,710	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.500"	19.1 mm to 38.1 mm	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	6387N1	000000
4 1/2"	3"	Steel	4,000	4,800	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.750"	0.750" to 1.750"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	6387N161	000000
4 1/2"	3"	Steel	4,000	4,800	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.750"	19.1 mm to 44.4 mm	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	6387N468	000000
4 7/8"	3 1/4"	Steel	4,000	5,495	Forward/Reverse, Start/Stop, Continuous	0.750" to 2.000"	0.750" to 2.000"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	6387N69	000000
4 7/8"	3 1/4"	Steel	4,000	5,495	Forward/Reverse, Start/Stop, Continuous	0.750" to 2.000"	19.1 mm to 50.8 mm	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	6387N407	000000
48 mm	32 mm	Steel	7,500	370	Forward/Reverse, Start/Stop, Continuous	9.6 mm to 12.7 mm	9.6 mm to 12.7 mm	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm	6387N564	000000
67 mm	44 mm	Steel	7,500	1,500	Forward/Reverse, Start/Stop, Continuous	9.6 mm to 19.0 mm	9.6 mm to 19.0 mm	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	6387N239	000000
76 mm	51 mm	Steel	6,500	1,580	Forward/Reverse, Start/Stop, Continuous	12.7 mm to 25.4 mm	12.7 mm to 25.4 mm	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6387N328	000000
86 mm	57 mm	Steel	5,500	2,250	Forward/Reverse, Start/Stop, Continuous	12.7 mm to 31.7 mm	12.7 mm to 31.7 mm	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6387N574	000000
95 mm	64 mm	Steel	4,000	2,710	Forward/Reverse, Start/Stop, Continuous	19.1 mm to 38.1 mm	19.1 mm to 38.1 mm	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	6387N356	000000
114 mm	76 mm	Steel	4,000	4,800	Forward/Reverse, Start/Stop, Continuous	19.1 mm to 44.4 mm	19.1 mm to 44.4 mm	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	6387N509	000000
124 mm	83 mm	Steel	4,000	5,495	Forward/Reverse, Start/Stop, Continuous	19.1 mm to 50.8 mm	19.1 mm to 50.8 mm	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	6387N257	000000

Step-Down Rigid Shaft Couplings—For Round Shafts


	Step Down

To Order: For step-down shaft couplings, please specify your shaft diameter for each end of the coupling in 0.001” or 0.1 mm increments within the ranges listed.

Step-down couplings connect different-size shafts.

Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion	Choose a Shaft Dia. (A)	Choose a Shaft Dia. (B)		Each
1 7/8"	1 1/4"	Steel	7,500	270	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.500"	0.375" to 0.500"	3509N21	0000000
1 7/8"	1 1/4"	Steel	7,500	270	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.500"	9.6 mm to 12.7 mm	3509N01	000000
2 5/8"	1 3/4"	Steel	7,500	1,120	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.750"	0.375" to 0.750"	3509N22	000000
2 5/8"	1 3/4"	Steel	7,500	1,120	Forward/Reverse, Start/Stop, Continuous	0.375" to 0.750"	9.6 mm to 19.0 mm	3509N02	000000
3"	2"	Steel	6,500	1,180	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.000"	0.500" to 1.000"	3509N23	000000
3"	2"	Steel	6,500	1,180	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.000"	12.7 mm to 25.4 mm	3509N03	000000
3 3/8"	2 1/4"	Steel	5,500	1,690	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.250"	0.500" to 1.250"	3509N24	000000
3 3/8"	2 1/4"	Steel	5,500	1,690	Forward/Reverse, Start/Stop, Continuous	0.500" to 1.250"	12.7 mm to 31.7 mm	3509N04	000000
3 3/4"	2 1/2"	Steel	4,000	2,030	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.500"	0.750" to 1.500"	3509N25	000000
3 3/4"	2 1/2"	Steel	4,000	2,030	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.500"	19.1 mm to 38.1 mm	3509N05	000000
4 1/2"	3"	Steel	4,000	3,600	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.750"	0.750" to 1.750"	3509N26	000000
4 1/2"	3"	Steel	4,000	3,600	Forward/Reverse, Start/Stop, Continuous	0.750" to 1.750"	19.1 mm to 44.4 mm	3509N06	000000
4 7/8"	3 1/4"	Steel	4,000	4,120	Forward/Reverse, Start/Stop, Continuous	0.750" to 2.000"	0.750" to 2.000"	3509N27	000000
4 7/8"	3 1/4"	Steel	4,000	4,120	Forward/Reverse, Start/Stop, Continuous	0.750" to 2.000"	19.1 mm to 50.8 mm	3509N07	000000
48 mm	32 mm	Steel	7,500	270	Forward/Reverse, Start/Stop, Continuous	9.6 mm to 12.7 mm	9.6 mm to 12.7 mm	3509N61	000000
67 mm	44 mm	Steel	7,500	1,120	Forward/Reverse, Start/Stop, Continuous	9.6 mm to 19.0 mm	9.6 mm to 19.0 mm	3509N62	000000
76 mm	51 mm	Steel	6,500	1,180	Forward/Reverse, Start/Stop, Continuous	12.7 mm to 25.4 mm	12.7 mm to 25.4 mm	3509N63	000000
86 mm	57 mm	Steel	5,500	1,690	Forward/Reverse, Start/Stop, Continuous	12.7 mm to 31.7 mm	12.7 mm to 31.7 mm	3509N64	000000
95 mm	64 mm	Steel	4,000	2,030	Forward/Reverse, Start/Stop, Continuous	19.1 mm to 38.1 mm	19.1 mm to 38.1 mm	3509N65	000000
114 mm	76 mm	Steel	4,000	3,600	Forward/Reverse, Start/Stop, Continuous	19.1 mm to 44.4 mm	19.1 mm to 44.4 mm	3509N66	000000
124 mm	83 mm	Steel	4,000	4,120	Forward/Reverse, Start/Stop, Continuous	19.1 mm to 50.8 mm	19.1 mm to 50.8 mm	3509N67	000000

Made-to-Order Two-Piece Rigid Shaft Couplings

For hard-to-access shafts that are oversized from coatings or undersized from wear, we’ll get you a coupling in the right size that clamps on as two pieces, so you don’t need to move your shafts or installed components. Let us know your shaft diameter to the nearest 0.001” or 0.1 mm. These couplings are rigid, making them good for high-torque applications. However, your shafts must be aligned.

Through-Bore Rigid Shaft Couplings—For Keyed Shafts


	Through Bore

To Order: For keyed through-bore shaft couplings, please specify your shaft diameter in 0.001” or 0.1 mm increments within the range listed. Also specify the keyway size that matches your shafts.

Through-bore couplings connect same-size shafts.

Choose a Shaft Diameter	Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion	Choose a Keyway Size (Wd. × Dp.)		Each
0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	960	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32"	6587N1	0000000
0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	3,895	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	6587N4	000000
0.500" to 1.000"	3"	2"	Steel	6,500	4,095	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	6587N8	000000
0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	5,840	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	6587N14	000000
0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	7,015	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	6587N19	000000
0.750" to 1.750"	4 1/2"	3"	Steel	4,000	12,440	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	6587N27	000000
0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	14,220	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	6587N35	000000
9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	960	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm	6587N44	000000
9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	3,895	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	6587N49	000000
12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	4,095	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6587N56	000000
12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	5,840	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	6587N64	000000
19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	7,015	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	6587N72	000000
19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	12,440	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	6587N81	000000
19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	14,220	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	6587N91	000000

Through-Bore Rigid Shaft Couplings—For Round Shafts


	Through Bore

To Order: For through-bore shaft couplings, please specify your shaft diameter in 0.001” or 0.1 mm increments within the range listed.

Through-bore couplings connect same-size shafts.

Choose a Shaft Diameter	Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion		Each
0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	720	Forward/Reverse, Start/Stop, Continuous	3499N11	0000000
0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	2,920	Forward/Reverse, Start/Stop, Continuous	3499N12	000000
0.500" to 1.000"	3"	2"	Steel	6,500	3,070	Forward/Reverse, Start/Stop, Continuous	3499N13	000000
0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	4,380	Forward/Reverse, Start/Stop, Continuous	3499N14	000000
0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	5,260	Forward/Reverse, Start/Stop, Continuous	3499N15	000000
0.750" to 1.750"	4 1/2"	3"	Steel	4,000	9,330	Forward/Reverse, Start/Stop, Continuous	3499N16	000000
0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	10,670	Forward/Reverse, Start/Stop, Continuous	3499N17	000000
9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	720	Forward/Reverse, Start/Stop, Continuous	3499N41	000000
9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	2,920	Forward/Reverse, Start/Stop, Continuous	3499N42	000000
12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	3,070	Forward/Reverse, Start/Stop, Continuous	3499N43	000000
12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	4,380	Forward/Reverse, Start/Stop, Continuous	3499N44	000000
19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	5,260	Forward/Reverse, Start/Stop, Continuous	3499N45	000000
19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	9,330	Forward/Reverse, Start/Stop, Continuous	3499N46	000000
19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	10,670	Forward/Reverse, Start/Stop, Continuous	3499N47	000000

Step-Down Rigid Shaft Couplings—For Keyed Shafts


	Step Down

Step-down couplings connect different-size shafts.

Choose a Shaft Dia. (A)	Choose a Shaft Dia. (B)	Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion	Choose a Keyway Size (Wd. × Dp.) for Shaft Dia. (A)	Choose a Keyway Size (Wd. × Dp.) for Shaft Dia. (B)		Each
0.375" to 0.500"	0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	425	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32"	3/32" × 3/32", 1/8" × 3/32"	7217N28	0000000
0.375" to 0.500"	9.6 mm to 12.7 mm	1 7/8"	1 1/4"	Steel	7,500	425	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32"	4 mm × 2 mm, 5 mm × 2.3 mm	7217N369	000000
0.375" to 0.750"	0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	1,730	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	7217N238	000000
0.375" to 0.750"	9.6 mm to 19.0 mm	2 5/8"	1 3/4"	Steel	7,500	1,730	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	7217N291	000000
0.500" to 1.000"	0.500" to 1.000"	3"	2"	Steel	6,500	1,820	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	7217N375	000000
0.500" to 1.000"	12.7 mm to 25.4 mm	3"	2"	Steel	6,500	1,820	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	7217N108	000000
0.500" to 1.250"	0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	2,600	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	7217N537	000000
0.500" to 1.250"	12.7 mm to 31.7 mm	3 3/8"	2 1/4"	Steel	5,500	2,600	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	7217N597	000000
0.750" to 1.500"	0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	3,120	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	7217N67	000000
0.750" to 1.500"	19.1 mm to 38.1 mm	3 3/4"	2 1/2"	Steel	4,000	3,120	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	7217N33	000000
0.750" to 1.750"	0.750" to 1.750"	4 1/2"	3"	Steel	4,000	5,530	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	7217N249	000000
0.750" to 1.750"	19.1 mm to 44.4 mm	4 1/2"	3"	Steel	4,000	5,530	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	7217N556	000000
0.750" to 2.000"	0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	6,320	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	7217N183	000000
0.750" to 2.000"	19.1 mm to 50.8 mm	4 7/8"	3 1/4"	Steel	4,000	6,320	Forward/Reverse, Start/Stop, Continuous	3/32" × 3/32", 1/8" × 3/32", 3/16" × 3/32", 1/4" × 1/8", 5/16" × 5/32", 3/8" × 3/16", 1/2" × 1/4"	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	7217N127	000000
9.6 mm to 12.7 mm	9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	425	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm	7217N616	000000
9.6 mm to 19.0 mm	9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	1,730	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm	7217N448	000000
12.7 mm to 25.4 mm	12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	1,820	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	7217N1	000000
12.7 mm to 31.7 mm	12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	2,600	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm	7217N302	000000
19.1 mm to 38.1 mm	19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	3,120	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm	7217N329	000000
19.1 mm to 44.4 mm	19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	5,530	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm	7217N394	000000
19.1 mm to 50.8 mm	19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	6,320	Forward/Reverse, Start/Stop, Continuous	2 mm × 2 mm, 3 mm × 2 mm, 4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	4 mm × 2 mm, 5 mm × 2.3 mm, 6 mm × 2.8 mm, 8 mm × 3.3 mm, 10 mm × 3.3 mm, 12 mm × 3.3 mm, 14 mm × 3.8 mm	7217N466	000000

Step-Down Rigid Shaft Couplings—For Round Shafts


	Step Down

To Order: For step-down shaft couplings, please specify your shaft diameter for each end of the coupling in 0.001” or 0.1 mm increments within the ranges listed.

Step-down couplings connect different-size shafts.

Choose a Shaft Dia. (A)	Choose a Shaft Dia. (B)	Overall Lg.	OD	Material	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion		Each
0.375" to 0.500"	0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	320	Forward/Reverse, Start/Stop, Continuous	3499N18	0000000
0.375" to 0.500"	9.6 mm to 12.7 mm	1 7/8"	1 1/4"	Steel	7,500	320	Forward/Reverse, Start/Stop, Continuous	3499N81	000000
0.375" to 0.750"	0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	1,300	Forward/Reverse, Start/Stop, Continuous	3499N19	000000
0.375" to 0.750"	9.6 mm to 19.0 mm	2 5/8"	1 3/4"	Steel	7,500	1,300	Forward/Reverse, Start/Stop, Continuous	3499N82	000000
0.500" to 1.000"	0.500" to 1.000"	3"	2"	Steel	6,500	1,370	Forward/Reverse, Start/Stop, Continuous	3499N2	000000
0.500" to 1.000"	12.7 mm to 25.4 mm	3"	2"	Steel	6,500	1,370	Forward/Reverse, Start/Stop, Continuous	3499N83	000000
0.500" to 1.250"	0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	1,950	Forward/Reverse, Start/Stop, Continuous	3499N21	000000
0.500" to 1.250"	12.7 mm to 31.7 mm	3 3/8"	2 1/4"	Steel	5,500	1,950	Forward/Reverse, Start/Stop, Continuous	3499N84	000000
0.750" to 1.500"	0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	2,340	Forward/Reverse, Start/Stop, Continuous	3499N22	000000
0.750" to 1.500"	19.1 mm to 38.1 mm	3 3/4"	2 1/2"	Steel	4,000	2,340	Forward/Reverse, Start/Stop, Continuous	3499N85	000000
0.750" to 1.750"	0.750" to 1.750"	4 1/2"	3"	Steel	4,000	4,150	Forward/Reverse, Start/Stop, Continuous	3499N23	000000
0.750" to 1.750"	19.1 mm to 44.4 mm	4 1/2"	3"	Steel	4,000	4,150	Forward/Reverse, Start/Stop, Continuous	3499N86	000000
0.750" to 2.000"	0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	4,740	Forward/Reverse, Start/Stop, Continuous	3499N24	000000
0.750" to 2.000"	19.1 mm to 50.8 mm	4 7/8"	3 1/4"	Steel	4,000	4,740	Forward/Reverse, Start/Stop, Continuous	3499N87	000000
9.6 mm to 12.7 mm	9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	320	Forward/Reverse, Start/Stop, Continuous	3499N51	000000
9.6 mm to 19.0 mm	9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	1,300	Forward/Reverse, Start/Stop, Continuous	3499N52	000000
12.7 mm to 25.4 mm	12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	1,370	Forward/Reverse, Start/Stop, Continuous	3499N53	000000
12.7 mm to 31.7 mm	12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	1,950	Forward/Reverse, Start/Stop, Continuous	3499N54	000000
19.1 mm to 38.1 mm	19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	2,340	Forward/Reverse, Start/Stop, Continuous	3499N55	000000
19.1 mm to 44.4 mm	19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	4,150	Forward/Reverse, Start/Stop, Continuous	3499N56	000000
19.1 mm to 50.8 mm	19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	4,740	Forward/Reverse, Start/Stop, Continuous	3499N57	000000