Couplings for Made-to-Order Shafts

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		Each
0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	830	Forward/Reverse, Start/Stop, Continuous	6707N1	0000000
0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	3,380	Forward/Reverse, Start/Stop, Continuous	6707N97	000000
0.500" to 1.000"	3"	2"	Steel	6,500	3,560	Forward/Reverse, Start/Stop, Continuous	6707N25	000000
0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	5,080	Forward/Reverse, Start/Stop, Continuous	6707N37	000000
0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	6,100	Forward/Reverse, Start/Stop, Continuous	6707N52	000000
0.750" to 1.750"	4 1/2"	3"	Steel	4,000	10,820	Forward/Reverse, Start/Stop, Continuous	6707N4	000000
0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	12,360	Forward/Reverse, Start/Stop, Continuous	6707N43	000000
9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	830	Forward/Reverse, Start/Stop, Continuous	6707N19	000000
9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	3,380	Forward/Reverse, Start/Stop, Continuous	6707N31	000000
12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	3,560	Forward/Reverse, Start/Stop, Continuous	6707N12	000000
12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	5,080	Forward/Reverse, Start/Stop, Continuous	6707N59	000000
19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	6,100	Forward/Reverse, Start/Stop, Continuous	6707N67	000000
19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	10,820	Forward/Reverse, Start/Stop, Continuous	6707N87	000000
19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	12,360	Forward/Reverse, Start/Stop, Continuous	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

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		Each
0.375" to 0.500"	1 7/8"	1 1/4"	Steel	7,500	960	Forward/Reverse, Start/Stop, Continuous	6587N1	0000000
0.375" to 0.750"	2 5/8"	1 3/4"	Steel	7,500	3,895	Forward/Reverse, Start/Stop, Continuous	6587N4	000000
0.500" to 1.000"	3"	2"	Steel	6,500	4,095	Forward/Reverse, Start/Stop, Continuous	6587N8	000000
0.500" to 1.250"	3 3/8"	2 1/4"	Steel	5,500	5,840	Forward/Reverse, Start/Stop, Continuous	6587N14	000000
0.750" to 1.500"	3 3/4"	2 1/2"	Steel	4,000	7,015	Forward/Reverse, Start/Stop, Continuous	6587N19	000000
0.750" to 1.750"	4 1/2"	3"	Steel	4,000	12,440	Forward/Reverse, Start/Stop, Continuous	6587N27	000000
0.750" to 2.000"	4 7/8"	3 1/4"	Steel	4,000	14,220	Forward/Reverse, Start/Stop, Continuous	6587N35	000000
9.6 mm to 12.7 mm	48 mm	32 mm	Steel	7,500	960	Forward/Reverse, Start/Stop, Continuous	6587N44	000000
9.6 mm to 19.0 mm	67 mm	44 mm	Steel	7,500	3,895	Forward/Reverse, Start/Stop, Continuous	6587N49	000000
12.7 mm to 25.4 mm	76 mm	51 mm	Steel	6,500	4,095	Forward/Reverse, Start/Stop, Continuous	6587N56	000000
12.7 mm to 31.7 mm	86 mm	57 mm	Steel	5,500	5,840	Forward/Reverse, Start/Stop, Continuous	6587N64	000000
19.1 mm to 38.1 mm	95 mm	64 mm	Steel	4,000	7,015	Forward/Reverse, Start/Stop, Continuous	6587N72	000000
19.1 mm to 44.4 mm	114 mm	76 mm	Steel	4,000	12,440	Forward/Reverse, Start/Stop, Continuous	6587N81	000000
19.1 mm to 50.8 mm	124 mm	83 mm	Steel	4,000	14,220	Forward/Reverse, Start/Stop, Continuous	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