Filter by
Shaft Diameter
Construction
OD
Material
Overall Length
For Rotary Motion
Shaft Coupling Flexibility
Length
Maximum Rotation Speed
Maximum Torque
Clamping Screw Type
Component
Clamping Screw Material
Finish
RoHS
REACH
DFARS Specialty Metals
Export Control Classification Number (ECCN)
Clamping Vibration-Damping Precision Flexible Shaft Couplings
 |  |
(Each Component Sold Separately) |
Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screws to secure. Good for precision motor and pump applications, the spider-shaped cushion reduces shock and compensates for minor shaft misalignment. Couplings allow zero backlash (no play).
A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are lightweight, corrosion-resistant aluminum. Spiders are polyurethane for fair vibration damping and good chemical resistance.
Hubs | Durometer 98A Polyurethane Spiders | Durometer 92A Polyurethane Spiders | Durometer 85A Polyurethane Spiders | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Misalignment Capability | Misalignment Capability | Misalignment Capability | |||||||||||||||||||||||||||
Overall Lg. | OD | For Shaft Type | For Rotary Motion | Choose a Shaft Diameter | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Each | ||||||
2024 Aluminum Hubs | |||||||||||||||||||||||||||||
| 1 7/64" | 3/4" | Round | Forward/Reverse, Start/Stop | 3/16", 1/4", 5/16", 4 mm, 5 mm, 6 mm, 7 mm, 8 mm | 9845T1 | 000000 | 8,000 | 30 | 0.003" | 0.8° | 0 to 180 | 9845T11 | 000000 | 8,000 | 18 | 0.004" | 0.9° | 0 to 180 | 9845T12 | 000000 | 8,000 | 10 | 0.005" | 1° | 0 to 180 | 9845T13 | 000000 | ||
| 1 13/32" | 1" | Keyed | Forward/Reverse, Start/Stop | 10 mm, 11 mm, 12 mm | 9845T63 | 00000 | 8,000 | 150 | 0.003" | 0.8° | 0 to 180 | 9845T14 | 00000 | 8,000 | 58 | 0.005" | 0.9° | 0 to 180 | 9845T15 | 00000 | 8,000 | 30 | 0.006" | 1° | 0 to 180 | 9845T16 | 00000 | ||
| 1 13/32" | 1" | Round | Forward/Reverse, Start/Stop | 1/4", 5/16", 3/8", 1/2", 6 mm, 7 mm, 8 mm, 9 mm | 9845T2 | 00000 | 8,000 | 150 | 0.003" | 0.8° | 0 to 180 | 9845T14 | 00000 | 8,000 | 58 | 0.005" | 0.9° | 0 to 180 | 9845T15 | 00000 | 8,000 | 30 | 0.006" | 1° | 0 to 180 | 9845T16 | 00000 | ||
| 1 13/16" | 1 5/16" | Keyed | Forward/Reverse, Start/Stop | 10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm | 9845T64 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0 to 180 | 9845T17 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0 to 180 | 9845T18 | 00000 | 8,000 | 36 | 0.006" | 1° | 0 to 180 | 9845T19 | 00000 | ||
| 1 13/16" | 1 5/16" | Round | Forward/Reverse, Start/Stop | 5/16", 3/8", 1/2", 5/8", 8 mm, 9 mm | 9845T3 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0 to 180 | 9845T17 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0 to 180 | 9845T18 | 00000 | 8,000 | 36 | 0.006" | 1° | 0 to 180 | 9845T19 | 00000 | ||
| 2 7/64" | 1 5/8" | Keyed | Forward/Reverse, Start/Stop | 10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm, 20 mm | 9845T4 | 00000 | 8,000 | 330 | 0.004" | 0.8° | 0 to 180 | 9845T21 | 00000 | 8,000 | 190 | 0.006" | 0.9° | 0 to 180 | 9845T22 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 2 7/64" | 1 5/8" | Round | Forward/Reverse, Start/Stop | 3/8", 1/2", 5/8", 3/4" | 9845T65 | 00000 | 8,000 | 330 | 0.004" | 0.8° | 0 to 180 | 9845T21 | 00000 | 8,000 | 190 | 0.006" | 0.9° | 0 to 180 | 9845T22 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 2 13/32" | 2" | Keyed | Forward/Reverse, Start/Stop | 12 mm, 14 mm, 15 mm, 16 mm, 20 mm, 25 mm | 9845T5 | 000000 | 8,000 | 550 | 0.005" | 0.8° | 0 to 180 | 9845T24 | 00000 | 8,000 | 440 | 0.006" | 0.9° | 0 to 180 | 9845T25 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 2 13/32" | 2" | Round | Forward/Reverse, Start/Stop | 1/2", 5/8", 3/4", 1" | 9845T66 | 000000 | 8,000 | 550 | 0.005" | 0.8° | 0 to 180 | 9845T24 | 00000 | 8,000 | 440 | 0.006" | 0.9° | 0 to 180 | 9845T25 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 3 13/64" | 2 1/4" | Keyed | Forward/Reverse, Start/Stop | 14 mm, 15 mm, 16 mm, 20 mm, 25 mm, 30 mm | 9845T6 | 000000 | 8,000 | 820 | 0.004" | 0.8° | 0 to 180 | 9845T26 | 00000 | 8,000 | 570 | 0.005" | 0.9° | 0 to 180 | 9845T27 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 3 13/64" | 2 1/4" | Round | Forward/Reverse, Start/Stop | 1/2", 5/8", 3/4", 1" | 9845T67 | 000000 | 8,000 | 820 | 0.004" | 0.8° | 0 to 180 | 9845T26 | 00000 | 8,000 | 570 | 0.005" | 0.9° | 0 to 180 | 9845T27 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 21.8 mm | 15 mm | Round | Forward/Reverse, Start/Stop | 3 mm, 4 mm, 5 mm, 6 mm | 9845T51 | 00000 | 8,000 | 16 | 0.002" | 0.8° | 0 to 180 | 9845T485 | 00000 | 8,000 | 10 | 0.004" | 0.9° | 0 to 180 | 9845T486 | 00000 | 8,000 | 4.8 | 0.005" | 1° | 0 to 180 | 9845T487 | 00000 | ||
| 35.3 mm | 25.4 mm | Keyed | Forward/Reverse, Start/Stop | 8 mm, 9 mm | 9845T57 | 00000 | 8,000 | 150 | 0.003" | 0.8° | 0 to 180 | 9845T14 | 00000 | 8,000 | 58 | 0.005" | 0.9° | 0 to 180 | 9845T15 | 00000 | 8,000 | 30 | 0.006" | 1° | 0 to 180 | 9845T16 | 00000 | ||
| 35.3 mm | 25.4 mm | Round | Forward/Reverse, Start/Stop | 10 mm, 11 mm, 12 mm | 9845T52 | 00000 | 8,000 | 150 | 0.003" | 0.8° | 0 to 180 | 9845T14 | 00000 | 8,000 | 58 | 0.005" | 0.9° | 0 to 180 | 9845T15 | 00000 | 8,000 | 30 | 0.006" | 1° | 0 to 180 | 9845T16 | 00000 | ||
| 44.5 mm | 33.3 mm | Keyed | Forward/Reverse, Start/Stop | 8 mm, 9 mm | 9845T58 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0 to 180 | 9845T17 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0 to 180 | 9845T18 | 00000 | 8,000 | 36 | 0.006" | 1° | 0 to 180 | 9845T19 | 00000 | ||
| 44.5 mm | 33.3 mm | Round | Forward/Reverse, Start/Stop | 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm | 9845T53 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0 to 180 | 9845T17 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0 to 180 | 9845T18 | 00000 | 8,000 | 36 | 0.006" | 1° | 0 to 180 | 9845T19 | 00000 | ||
| 53 mm | 41.3 mm | Keyed | Forward/Reverse, Start/Stop | 13 mm, 17 mm, 18 mm, 19 mm | 9845T59 | 00000 | 8,000 | 330 | 0.004" | 0.8° | 0 to 180 | 9845T21 | 00000 | 8,000 | 190 | 0.006" | 0.9° | 0 to 180 | 9845T22 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 53 mm | 41.3 mm | Round | Forward/Reverse, Start/Stop | 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm | 9845T54 | 00000 | 8,000 | 330 | 0.004" | 0.8° | 0 to 180 | 9845T21 | 00000 | 8,000 | 190 | 0.006" | 0.9° | 0 to 180 | 9845T22 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 61 mm | 50.8 mm | Keyed | Forward/Reverse, Start/Stop | 17 mm, 19 mm, 22 mm, 24 mm | 9845T61 | 000000 | 8,000 | 550 | 0.005" | 0.8° | 0 to 180 | 9845T24 | 00000 | 8,000 | 440 | 0.006" | 0.9° | 0 to 180 | 9845T25 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 61 mm | 50.8 mm | Round | Forward/Reverse, Start/Stop | 12 mm, 15 mm, 19 mm, 22 mm, 24 mm, 25 mm | 9845T55 | 00000 | 8,000 | 550 | 0.005" | 0.8° | 0 to 180 | 9845T24 | 00000 | 8,000 | 440 | 0.006" | 0.9° | 0 to 180 | 9845T25 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 80 mm | 57.2 mm | Keyed | Forward/Reverse, Start/Stop | 19 mm, 22 mm, 24 mm, 28 mm | 9845T62 | 000000 | 8,000 | 820 | 0.004" | 0.8° | 0 to 180 | 9845T26 | 00000 | 8,000 | 570 | 0.005" | 0.9° | 0 to 180 | 9845T27 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 80 mm | 57.2 mm | Round | Forward/Reverse, Start/Stop | 16 mm, 19 mm, 20 mm, 22 mm, 25 mm, 30 mm, 32 mm | 9845T56 | 000000 | 8,000 | 820 | 0.004" | 0.8° | 0 to 180 | 9845T26 | 00000 | 8,000 | 570 | 0.005" | 0.9° | 0 to 180 | 9845T27 | 00000 | — | — | — | — | — | ——— | 0 | ||
Set Screw Vibration-Damping Precision Flexible Shaft Couplings
 |  |
(Each Component Sold Separately) | Components of a Coupling Shown Assembled |
The included set screw holds the coupling in place. Good for precision motor and pump applications, the spider-shaped cushion reduces shock and compensates for minor shaft misalignment. Couplings allow zero backlash (no play).
A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are lightweight, corrosion-resistant aluminum. Spiders are polyurethane for fair vibration damping and good chemical resistance.
Hubs | Durometer 98A Polyurethane Spiders | Durometer 92A Polyurethane Spiders | Durometer 85A Polyurethane Spiders | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Misalignment Capability | Misalignment Capability | Misalignment Capability | |||||||||||||||||||||||||||
Overall Lg., mm | OD, mm | For Shaft Type | For Rotary Motion | Choose a Shaft Diameter, mm | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Each | ||||||
2024 Aluminum Hubs | |||||||||||||||||||||||||||||
| 21 | 15 | Round | Continuous, Forward/Reverse, Start/Stop | 4, 5, 6 | 9939T31 | 000000 | 8,000 | 16 | 0.002" | 0.8° | -10 to 180 | 9939T444 | 000000 | 8,000 | 10 | 0.004" | 0.9° | -10 to 180 | 9939T445 | 000000 | 8,000 | 4.8 | 0.005" | 1° | -10 to 180 | 9939T446 | 000000 | ||
| 27 | 19 | Round | Continuous, Forward/Reverse, Start/Stop | 5, 6, 7, 8 | 9939T32 | 00000 | 8,000 | 30 | 0.003" | 0.8° | 0 to 180 | 9845T11 | 00000 | 8,000 | 18 | 0.004" | 0.9° | 0 to 180 | 9845T12 | 00000 | 8,000 | 10 | 0.005" | 1° | 0 to 180 | 9845T13 | 00000 | ||
| 35 | 25 | Keyed | Continuous, Forward/Reverse, Start/Stop | 10, 11 | 9939T38 | 00000 | 8,000 | 150 | 0.003" | 0.8° | 0 to 180 | 9845T14 | 00000 | 8,000 | 58 | 0.005" | 0.9° | 0 to 180 | 9845T15 | 00000 | 8,000 | 30 | 0.006" | 1° | 0 to 180 | 9845T16 | 00000 | ||
| 35 | 25 | Round | Continuous, Forward/Reverse, Start/Stop | 6, 8, 10, 11, 12 | 9939T33 | 00000 | 8,000 | 150 | 0.003" | 0.8° | 0 to 180 | 9845T14 | 00000 | 8,000 | 58 | 0.005" | 0.9° | 0 to 180 | 9845T15 | 00000 | 8,000 | 30 | 0.006" | 1° | 0 to 180 | 9845T16 | 00000 | ||
| 44 | 33 | Keyed | Continuous, Forward/Reverse, Start/Stop | 14, 16 | 9939T39 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0 to 180 | 9845T17 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0 to 180 | 9845T18 | 00000 | 8,000 | 36 | 0.006" | 1° | 0 to 180 | 9845T19 | 00000 | ||
| 44 | 33 | Round | Continuous, Forward/Reverse, Start/Stop | 8, 14 | 9939T34 | 00000 | 8,000 | 170 | 0.003" | 0.8° | 0 to 180 | 9845T17 | 00000 | 8,000 | 70 | 0.005" | 0.9° | 0 to 180 | 9845T18 | 00000 | 8,000 | 36 | 0.006" | 1° | 0 to 180 | 9845T19 | 00000 | ||
| 53 | 41 | Keyed | Continuous, Forward/Reverse, Start/Stop | 12, 14, 16, 20 | 9939T41 | 00000 | 8,000 | 330 | 0.004" | 0.8° | 0 to 180 | 9845T21 | 00000 | 8,000 | 190 | 0.006" | 0.9° | 0 to 180 | 9845T22 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 53 | 41 | Round | Continuous, Forward/Reverse, Start/Stop | 12, 14, 18, 20 | 9939T35 | 00000 | 8,000 | 330 | 0.004" | 0.8° | 0 to 180 | 9845T21 | 00000 | 8,000 | 190 | 0.006" | 0.9° | 0 to 180 | 9845T22 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 61 | 50 | Keyed | Continuous, Forward/Reverse, Start/Stop | 18, 20, 24 | 9939T42 | 000000 | 8,000 | 550 | 0.005" | 0.8° | 0 to 180 | 9845T24 | 00000 | 8,000 | 440 | 0.006" | 0.9° | 0 to 180 | 9845T25 | 00000 | — | — | — | — | — | ——— | 0 | ||
| 80 | 57 | Keyed | Continuous, Forward/Reverse, Start/Stop | 14, 20, 24, 28 | 9939T43 | 000000 | 8,000 | 820 | 0.004" | 0.8° | 0 to 180 | 9845T26 | 00000 | 8,000 | 570 | 0.005" | 0.9° | 0 to 180 | 9845T27 | 00000 | — | — | — | — | — | ——— | 0 | ||
High-Speed Precision Flexible Shaft Couplings
 |
With a bellows between two hubs, these couplings handle all types of misalignment and are good for precision stepper and encoder motion-control applications. All have lightweight aluminum hubs and a stainless steel bellows for corrosion resistance. Couplings allow zero backlash (no play) and grip evenly around your shaft for a strong hold without marring the shaft. Tighten the clamping screws to secure.
Misalignment Capability | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Diameter | Overall Lg. | OD | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | For Rotary Motion | Each | |||
2024 Aluminum with 321 Stainless Steel Bellows | ||||||||||||
| 1/8" × 1/8" | 1 1/16" | 19/32" | 10,000 | 22 | 0.004" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 6446K271 | 0000000 | ||
| 3/16" × 3 mm | 1 1/16" | 19/32" | 10,000 | 22 | 0.004" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 6446K762 | 000000 | ||
| 3/16" × 5 mm | 1 5/16" | 3/4" | 10,000 | 40 | 0.004" | 1.5° | 0.01" | Forward/Reverse, Start/Stop | 6446K769 | 000000 | ||
| 1/4" × 1/4" | 1 1/16" | 19/32" | 10,000 | 22 | 0.004" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 6446K276 | 000000 | ||
| 1/4" × 1/4" | 1 5/16" | 3/4" | 10,000 | 40 | 0.004" | 1.5° | 0.01" | Forward/Reverse, Start/Stop | 6446K313 | 000000 | ||
| 1/4" × 1/4" | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K41 | 000000 | ||
| 1/4" × 3/8" | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K89 | 000000 | ||
| 1/4" × 3 mm | 1 1/16" | 19/32" | 10,000 | 22 | 0.004" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 6446K757 | 000000 | ||
| 1/4" × 5 mm | 1 1/16" | 19/32" | 10,000 | 22 | 0.004" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 6446K759 | 000000 | ||
| 1/4" × 5 mm | 1 5/16" | 3/4" | 10,000 | 40 | 0.004" | 1.5° | 0.01" | Forward/Reverse, Start/Stop | 6446K766 | 000000 | ||
| 1/4" × 6 mm | 1 1/16" | 19/32" | 10,000 | 22 | 0.004" | 1.5° | 0.008" | Forward/Reverse, Start/Stop | 6446K761 | 000000 | ||
| 1/4" × 6 mm | 1 5/16" | 3/4" | 10,000 | 40 | 0.004" | 1.5° | 0.01" | Forward/Reverse, Start/Stop | 6446K767 | 000000 | ||
| 1/4" × 8 mm | 1 5/16" | 3/4" | 10,000 | 40 | 0.004" | 1.5° | 0.01" | Forward/Reverse, Start/Stop | 6446K772 | 000000 | ||
| 1/4" × 8 mm | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K782 | 000000 | ||
| 1/4" × 10 mm | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K785 | 000000 | ||
| 5/16" × 1/4" | 1 5/16" | 3/4" | 10,000 | 40 | 0.004" | 1.5° | 0.01" | Forward/Reverse, Start/Stop | 6446K315 | 000000 | ||
| 5/16" × 5/16" | 1 5/16" | 3/4" | 10,000 | 40 | 0.004" | 1.5° | 0.01" | Forward/Reverse, Start/Stop | 6446K316 | 000000 | ||
| 3/8" × 1/4" | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K563 | 000000 | ||
| 3/8" × 3/8" | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K565 | 000000 | ||
| 3/8" × 3/8" | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K613 | 000000 | ||
| 3/8" × 3/8" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K43 | 000000 | ||
| 3/8" × 6 mm | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K779 | 000000 | ||
| 3/8" × 8 mm | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K781 | 000000 | ||
| 3/8" × 10 mm | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K783 | 000000 | ||
| 1/2" × 1/4" | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K566 | 000000 | ||
| 1/2" × 1/4" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K45 | 000000 | ||
| 1/2" × 3/8" | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K568 | 000000 | ||
| 1/2" × 3/8" | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K615 | 000000 | ||
| 1/2" × 3/8" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K44 | 000000 | ||
| 1/2" × 1/2" | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K569 | 000000 | ||
| 1/2" × 1/2" | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K616 | 000000 | ||
| 1/2" × 1/2" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K46 | 000000 | ||
| 1/2" × 1/2" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K861 | 000000 | ||
| 1/2" × 6 mm | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K776 | 000000 | ||
| 1/2" × 8 mm | 1 11/32" | 1" | 10,000 | 60 | 0.004" | 1.5° | 0.012" | Forward/Reverse, Start/Stop | 6446K777 | 000000 | ||
| 1/2" × 8 mm | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K789 | 000000 | ||
| 1/2" × 10 mm | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K787 | 000000 | ||
| 1/2" × 10 mm | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K794 | 000000 | ||
| 1/2" × 15 mm | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K795 | 000000 | ||
| 5/8" × 3/8" | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K618 | 000000 | ||
| 5/8" × 3/8" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K911 | 000000 | ||
| 5/8" × 1/2" | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K619 | 000000 | ||
| 5/8" × 1/2" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K912 | 000000 | ||
| 5/8" × 1/2" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K862 | 000000 | ||
| 5/8" × 5/8" | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K621 | 000000 | ||
| 5/8" × 5/8" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K47 | 000000 | ||
| 5/8" × 5/8" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K863 | 000000 | ||
| 5/8" × 10 mm | 1 11/16" | 1 5/16" | 10,000 | 120 | 0.006" | 1.5° | 0.016" | Forward/Reverse, Start/Stop | 6446K791 | 000000 | ||
| 5/8" × 12 mm | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K803 | 000000 | ||
| 5/8" × 20 mm | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K813 | 000000 | ||
| 3/4" × 3/8" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K913 | 000000 | ||
| 3/4" × 1/2" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K914 | 000000 | ||
| 3/4" × 1/2" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K864 | 000000 | ||
| 3/4" × 5/8" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K915 | 000000 | ||
| 3/4" × 5/8" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K865 | 000000 | ||
| 3/4" × 3/4" | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K916 | 000000 | ||
| 3/4" × 3/4" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K866 | 000000 | ||
| 3/4" × 10 mm | 2 1/32" | 1 5/8" | 10,000 | 250 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K799 | 000000 | ||
| 3/4" × 12 mm | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K815 | 000000 | ||
| 3/4" × 25 mm | 3 1/4" | 2 1/4" | 10,000 | 530 | 0.012" | 2° | 0.03" | Forward/Reverse, Start/Stop | 6446K821 | 000000 | ||
| 7/8" × 1/2" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K867 | 000000 | ||
| 7/8" × 5/8" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K868 | 000000 | ||
| 7/8" × 3/4" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K869 | 000000 | ||
| 7/8" × 7/8" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K871 | 000000 | ||
| 1" × 1/2" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K872 | 000000 | ||
| 1" × 5/8" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K873 | 000000 | ||
| 1" × 3/4" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K874 | 000000 | ||
| 1" × 7/8" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K875 | 000000 | ||
| 1" × 1" | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K876 | 000000 | ||
| 1" × 15 mm | 2 13/32" | 2" | 10,000 | 400 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 6446K807 | 000000 | ||
| 1" × 20 mm | 3 1/4" | 2 1/4" | 10,000 | 530 | 0.012" | 2° | 0.03" | Forward/Reverse, Start/Stop | 6446K826 | 000000 | ||
| 1 1/4" × 30 mm | 3 1/4" | 2 1/4" | 10,000 | 530 | 0.012" | 2° | 0.03" | Forward/Reverse, Start/Stop | 6446K829 | 000000 | ||
| 5 mm × 3 mm | 27.3 mm | 15 mm | 10,000 | 22 | 0.1 mm | 1.5° | 0.2 mm | Forward/Reverse, Start/Stop | 6446K634 | 000000 | ||
| 5 mm × 5 mm | 27.3 mm | 15 mm | 10,000 | 22 | 0.1 mm | 1.5° | 0.2 mm | Forward/Reverse, Start/Stop | 6446K636 | 000000 | ||
| 5 mm × 5 mm | 33.2 mm | 19.1 mm | 10,000 | 40 | 0.1 mm | 1.5° | 0.25 mm | Forward/Reverse, Start/Stop | 6446K644 | 000000 | ||
| 6 mm × 4 mm | 27.3 mm | 15 mm | 10,000 | 22 | 0.1 mm | 1.5° | 0.2 mm | Forward/Reverse, Start/Stop | 6446K638 | 000000 | ||
| 6 mm × 5 mm | 27.3 mm | 15 mm | 10,000 | 22 | 0.1 mm | 1.5° | 0.2 mm | Forward/Reverse, Start/Stop | 6446K639 | 000000 | ||
| 6 mm × 5 mm | 33.2 mm | 19.1 mm | 10,000 | 40 | 0.1 mm | 1.5° | 0.25 mm | Forward/Reverse, Start/Stop | 6446K646 | 000000 | ||
| 6 mm × 6 mm | 27.3 mm | 15 mm | 10,000 | 22 | 0.1 mm | 1.5° | 0.2 mm | Forward/Reverse, Start/Stop | 6446K641 | 000000 | ||
| 6 mm × 6 mm | 33.2 mm | 19.1 mm | 10,000 | 40 | 0.1 mm | 1.5° | 0.25 mm | Forward/Reverse, Start/Stop | 6446K647 | 000000 | ||
| 8 mm × 4 mm | 33.2 mm | 19.1 mm | 10,000 | 40 | 0.1 mm | 1.5° | 0.25 mm | Forward/Reverse, Start/Stop | 6446K648 | 000000 | ||
| 8 mm × 5 mm | 33.2 mm | 19.1 mm | 10,000 | 40 | 0.1 mm | 1.5° | 0.25 mm | Forward/Reverse, Start/Stop | 6446K649 | 000000 | ||
| 8 mm × 6 mm | 33.2 mm | 19.1 mm | 10,000 | 40 | 0.1 mm | 1.5° | 0.25 mm | Forward/Reverse, Start/Stop | 6446K651 | 000000 | ||
| 8 mm × 6 mm | 34.2 mm | 25.4 mm | 10,000 | 60 | 0.1 mm | 1.5° | 0.3 mm | Forward/Reverse, Start/Stop | 6446K662 | 000000 | ||
| 8 mm × 8 mm | 33.2 mm | 19.1 mm | 10,000 | 40 | 0.1 mm | 1.5° | 0.25 mm | Forward/Reverse, Start/Stop | 6446K652 | 000000 | ||
| 8 mm × 8 mm | 34.2 mm | 25.4 mm | 10,000 | 60 | 0.1 mm | 1.5° | 0.3 mm | Forward/Reverse, Start/Stop | 6446K663 | 000000 | ||
| 8 mm × 8 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K685 | 000000 | ||
| 10 mm × 6 mm | 34.2 mm | 25.4 mm | 10,000 | 60 | 0.1 mm | 1.5° | 0.3 mm | Forward/Reverse, Start/Stop | 6446K654 | 000000 | ||
| 10 mm × 8 mm | 34.2 mm | 25.4 mm | 10,000 | 60 | 0.1 mm | 1.5° | 0.3 mm | Forward/Reverse, Start/Stop | 6446K655 | 000000 | ||
| 10 mm × 10 mm | 34.2 mm | 25.4 mm | 10,000 | 60 | 0.1 mm | 1.5° | 0.3 mm | Forward/Reverse, Start/Stop | 6446K653 | 000000 | ||
| 10 mm × 10 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K664 | 000000 | ||
| 10 mm × 10 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K686 | 000000 | ||
| 12 mm × 10 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K687 | 000000 | ||
| 12 mm × 12 mm | 34.2 mm | 25.4 mm | 10,000 | 60 | 0.1 mm | 1.5° | 0.3 mm | Forward/Reverse, Start/Stop | 6446K657 | 000000 | ||
| 12 mm × 12 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K688 | 000000 | ||
| 14 mm × 10 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K669 | 000000 | ||
| 14 mm × 10 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K689 | 000000 | ||
| 14 mm × 12 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K671 | 000000 | ||
| 14 mm × 14 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K692 | 000000 | ||
| 14 mm × 14 mm | 61.3 mm | 50.8 mm | 10,000 | 400 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K712 | 000000 | ||
| 15 mm × 14 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K676 | 000000 | ||
| 15 mm × 14 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K695 | 000000 | ||
| 16 mm × 8 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K684 | 000000 | ||
| 16 mm × 10 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K679 | 000000 | ||
| 16 mm × 10 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K697 | 000000 | ||
| 16 mm × 15 mm | 61.3 mm | 50.8 mm | 10,000 | 400 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K718 | 000000 | ||
| 16 mm × 16 mm | 43.2 mm | 33.3 mm | 10,000 | 120 | 0.15 mm | 1.5° | 0.4 mm | Forward/Reverse, Start/Stop | 6446K683 | 000000 | ||
| 16 mm × 16 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K701 | 000000 | ||
| 16 mm × 16 mm | 82.2 mm | 57.2 mm | 10,000 | 530 | 0.3 mm | 2° | 0.75 mm | Forward/Reverse, Start/Stop | 6446K737 | 000000 | ||
| 20 mm × 12 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K703 | 000000 | ||
| 20 mm × 14 mm | 51.7 mm | 41.3 mm | 10,000 | 250 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K704 | 000000 | ||
| 20 mm × 20 mm | 61.3 mm | 50.8 mm | 10,000 | 400 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K726 | 000000 | ||
| 20 mm × 20 mm | 82.2 mm | 57.2 mm | 10,000 | 530 | 0.3 mm | 2° | 0.75 mm | Forward/Reverse, Start/Stop | 6446K736 | 000000 | ||
| 25 mm × 12 mm | 61.3 mm | 50.8 mm | 10,000 | 400 | 0.25 mm | 2° | 0.5 mm | Forward/Reverse, Start/Stop | 6446K727 | 000000 | ||
| 25 mm × 20 mm | 82.2 mm | 57.2 mm | 10,000 | 530 | 0.3 mm | 2° | 0.75 mm | Forward/Reverse, Start/Stop | 6446K742 | 000000 | ||
| 30 mm × 25 mm | 82.2 mm | 57.2 mm | 10,000 | 530 | 0.3 mm | 2° | 0.75 mm | Forward/Reverse, Start/Stop | 6446K741 | 000000 | ||
| 30 mm × 30 mm | 82.2 mm | 57.2 mm | 10,000 | 530 | 0.3 mm | 2° | 0.75 mm | Forward/Reverse, Start/Stop | 6446K734 | 000000 | ||
Clamping High-Parallel-Misalignment Flexible Shaft Couplings
 |  |
Components of a Coupling Shown Assembled | (Each Component Sold Separately) |
Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screws to secure. Also known as Oldham couplings, they have a slotted disc that allows hubs to slide independently—good for applications with parallel shaft misalignment. They also allow zero backlash (no play) and never need lubrication.
A complete coupling consists of two hubs and one disc (each component sold separately).
2024 Aluminum—2024 aluminum hubs are lightweight and have good corrosion resistance.
Acetal Disc—Acetal discs stand up to high twisting forces.
Nylon Disc—Nylon discs have excellent vibration and shock absorption.
PEEK Disc—PEEK discs have excellent impact resistance and the chemical resistance to withstand a variety of acids and other harsh substances.
Hubs | Acetal Discs | Nylon Discs | PEEK Discs | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Misalignment Capability | Misalignment Capability | Misalignment Capability | |||||||||||||||||||||||||||||||||
Overall Lg. | OD | For Shaft Type | For Rotary Motion | Choose a Shaft Diameter | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | Temp. Range, ° F | Disc Material | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | Temp. Range, ° F | Disc Material | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | Temp. Range, ° F | Disc Material | Each | ||||||
2024 Aluminum Hubs | |||||||||||||||||||||||||||||||||||
| 1" | 3/4" | Round | Forward/Reverse, Start/Stop | 3/16", 1/4", 5/16", 3/8", 4 mm, 5 mm, 6 mm, 7 mm, 8 mm | 9889T1 | 000000 | 4,500 | 20 | 0.008" | 0.5° | 0.004" | -10 to 150 | Acetal | 59985K62 | 00000 | 4,500 | 5 | 0.008" | 0.5° | 0.004" | -10 to 130 | Nylon | 59985K92 | 000000 | 4,500 | 20 | 0.008" | 0.5° | 0.004" | -10 to 300 | PEEK | 59985K711 | 000000 | ||
| 1 1/4" | 1" | Keyed | Forward/Reverse, Start/Stop | 8 mm, 12 mm | 9889T71 | 00000 | 4,500 | 42 | 0.008" | 0.5° | 0.004" | -10 to 150 | Acetal | 59985K63 | 00000 | 4,500 | 10 | 0.008" | 0.5° | 0.004" | -10 to 130 | Nylon | 59985K93 | 00000 | 4,500 | 42 | 0.008" | 0.5° | 0.004" | -10 to 300 | PEEK | 59985K712 | 00000 | ||
| 1 1/4" | 1" | Round | Forward/Reverse, Start/Stop | 1/4", 5/16", 3/8", 1/2", 6 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm | 9889T2 | 00000 | 4,500 | 42 | 0.008" | 0.5° | 0.004" | -10 to 150 | Acetal | 59985K63 | 00000 | 4,500 | 10 | 0.008" | 0.5° | 0.004" | -10 to 130 | Nylon | 59985K93 | 00000 | 4,500 | 42 | 0.008" | 0.5° | 0.004" | -10 to 300 | PEEK | 59985K712 | 00000 | ||
| 1 7/8" | 1 5/16" | Keyed | Forward/Reverse, Start/Stop | 12 mm, 15 mm | 9889T72 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K64 | 00000 | 4,500 | 18 | 0.008" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K94 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K713 | 00000 | ||
| 1 7/8" | 1 5/16" | Round | Forward/Reverse, Start/Stop | 5/16", 3/8", 1/2", 5/8", 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm | 9889T3 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K64 | 00000 | 4,500 | 18 | 0.008" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K94 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K713 | 00000 | ||
| 2" | 1 5/8" | Keyed | Forward/Reverse, Start/Stop | 12 mm, 16 mm, 17 mm, 19 mm, 20 mm | 9889T73 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K65 | 00000 | 4,500 | 32 | 0.01" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K95 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K714 | 00000 | ||
| 2" | 1 5/8" | Round | Forward/Reverse, Start/Stop | 3/8", 1/2", 5/8", 3/4", 10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm | 9889T4 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K65 | 00000 | 4,500 | 32 | 0.01" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K95 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K714 | 00000 | ||
| 2 3/8" | 2" | Round | Forward/Reverse, Start/Stop | 25 mm | 9889T783 | 000000 | 4,500 | 250 | 0.01" | 0.5° | 0.008" | -10 to 150 | Acetal | 59985K715 | 00000 | — | — | — | — | — | — | — | ——— | 0 | 4,500 | 250 | 0.01" | 0.5° | 0.008" | -10 to 300 | PEEK | 59985K716 | 000000 | ||
| 3 1/8" | 2 1/4" | Keyed | Forward/Reverse, Start/Stop | 14 mm, 19 mm, 24 mm | 9889T75 | 000000 | 4,500 | 375 | 0.01" | 0.5° | 0.008" | -10 to 150 | Acetal | 59985K717 | 00000 | — | — | — | — | — | — | — | ——— | 0 | 4,500 | 375 | 0.01" | 0.5° | 0.008" | -10 to 300 | PEEK | 59985K718 | 00000 | ||
| 3 1/8" | 2 1/4" | Round | Forward/Reverse, Start/Stop | 14 mm, 19 mm | 9889T77 | 000000 | 4,500 | 375 | 0.01" | 0.5° | 0.008" | -10 to 150 | Acetal | 59985K717 | 00000 | — | — | — | — | — | — | — | ——— | 0 | 4,500 | 375 | 0.01" | 0.5° | 0.008" | -10 to 300 | PEEK | 59985K718 | 00000 | ||
Set Screw High-Parallel-Misalignment Flexible Shaft Couplings
 |  |
(Each Component Sold Separately) |
Each hub includes a set screw, which bites into your shaft to hold the coupling in place. Also known as Oldham couplings, these couplings have a slotted disc that allows hubs to slide independently—good for applications with parallel shaft misalignment. They also allow zero backlash (no play) and never need lubrication.
A complete coupling consists of two hubs and one disc (each component sold separately). Hubs are made of aluminum, so they’re lightweight and have good corrosion resistance.
Acetal Disc—Acetal discs stand up to high twisting forces.
Nylon Disc—Nylon discs have excellent vibration and shock absorption.
PEEK Disc—PEEK discs have excellent impact resistance and the chemical resistance to withstand a variety of acids and other harsh substances.
Hubs | Acetal Discs | Nylon Discs | PEEK Discs | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Misalignment Capability | Misalignment Capability | Misalignment Capability | |||||||||||||||||||||||||||||||||
Overall Lg. | OD | For Shaft Type | For Rotary Motion | Choose a Shaft Diameter | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | Temp. Range, ° F | Disc Material | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | Temp. Range, ° F | Disc Material | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | Temp. Range, ° F | Disc Material | Each | ||||||
2024 Aluminum Hubs | |||||||||||||||||||||||||||||||||||
| 5/8" | 1/2" | Round | Forward/Reverse, Start/Stop | 1/8", 3/16", 1/4", 3 mm, 4 mm, 5 mm, 6 mm | 59985K1 | 000000 | 4,500 | 6 | 0.004" | 0.5° | 0.002" | -10 to 150 | Acetal | 59985K61 | 00000 | 4,500 | 1.5 | 0.004" | 0.5° | 0.002" | -10 to 130 | Nylon | 59985K91 | 000000 | 4,500 | 6 | 0.004" | 0.5° | 0.002" | -10 to 300 | PEEK | 59985K719 | 000000 | ||
| 7/8" | 3/4" | Round | Forward/Reverse, Start/Stop | 3/16", 1/4", 5/16", 3/8", 4 mm, 5 mm, 6 mm, 8 mm | 59985K2 | 00000 | 4,500 | 20 | 0.008" | 0.5° | 0.004" | -10 to 150 | Acetal | 59985K62 | 0000 | 4,500 | 5 | 0.008" | 0.5° | 0.004" | -10 to 130 | Nylon | 59985K92 | 00000 | 4,500 | 20 | 0.008" | 0.5° | 0.004" | -10 to 300 | PEEK | 59985K711 | 00000 | ||
| 1 1/8" | 1" | Round | Forward/Reverse, Start/Stop | 1/4", 5/16", 3/8", 1/2", 6 mm, 8 mm, 9 mm, 10 mm, 12 mm | 59985K3 | 00000 | 4,500 | 42 | 0.008" | 0.5° | 0.004" | -10 to 150 | Acetal | 59985K63 | 00000 | 4,500 | 10 | 0.008" | 0.5° | 0.004" | -10 to 130 | Nylon | 59985K93 | 00000 | 4,500 | 42 | 0.008" | 0.5° | 0.004" | -10 to 300 | PEEK | 59985K712 | 00000 | ||
| 1 7/8" | 1 5/16" | Keyed | Forward/Reverse, Start/Stop | 10 mm, 14 mm | 59985K52 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K64 | 00000 | 4,500 | 18 | 0.008" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K94 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K713 | 00000 | ||
| 1 7/8" | 1 5/16" | Round | Forward/Reverse, Start/Stop | 5/16", 3/8", 1/2", 5/8", 8 mm, 10 mm, 12 mm, 14 mm, 15 mm, 16 mm | 59985K4 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K64 | 00000 | 4,500 | 18 | 0.008" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K94 | 00000 | 4,500 | 70 | 0.008" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K713 | 00000 | ||
| 2" | 1 5/8" | Keyed | Forward/Reverse, Start/Stop | 12 mm, 14 mm | 59985K53 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K65 | 00000 | 4,500 | 32 | 0.01" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K95 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K714 | 00000 | ||
| 2" | 1 5/8" | Round | Forward/Reverse, Start/Stop | 3/8", 1/2", 5/8", 3/4", 10 mm, 14 mm, 20 mm | 59985K5 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 150 | Acetal | 59985K65 | 00000 | 4,500 | 32 | 0.01" | 0.5° | 0.006" | -10 to 130 | Nylon | 59985K95 | 00000 | 4,500 | 130 | 0.01" | 0.5° | 0.006" | -10 to 300 | PEEK | 59985K714 | 00000 | ||
Electrically Isolating Servomotor Precision Flexible Shaft Couplings
 |
An acetal spacer at the center of these couplings insulates bearings, encoders, and other shaft components from stray electric current. Use them with servomotors, which sometimes generate current that travels down the shaft and can damage circuit boards, interfere with readings, and cause wear on bearing raceways. Like other servomotor couplings, they're good for high speeds, precise positioning, and frequent starts and stops. They have zero backlash, which means they transfer power with no delays or wasted motion. A pair of disc springs—one on each side of the spacer—allow the coupling to flex and accommodate for all types of misalignment. Clamping screws secure both shafts with an even, nonmarring grip.
Misalignment Capability | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Diameter | Overall Lg. | OD | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | For Rotary Motion | Each | |||
Anodized 2024 Aluminum with Acetal Spacer | ||||||||||||
| 1/4" × 1/4" | 1 3/16" | 3/4" | 10,000 | 6.2 | 0.004" | 2° | 0.008" | Forward/Reverse, Start/Stop | 3488N11 | 0000000 | ||
| 3/8" × 1/4" | 1 3/8" | 1" | 10,000 | 12.5 | 0.006" | 2° | 0.012" | Forward/Reverse, Start/Stop | 3488N12 | 000000 | ||
| 3/8" × 3/8" | 1 3/8" | 1" | 10,000 | 12.5 | 0.006" | 2° | 0.012" | Forward/Reverse, Start/Stop | 3488N13 | 000000 | ||
| 3/8" × 3/8" | 1 49/64" | 1 5/16" | 10,000 | 25 | 0.008" | 2° | 0.016" | Forward/Reverse, Start/Stop | 3488N15 | 000000 | ||
| 1/2" × 1/4" | 1 3/8" | 1" | 10,000 | 12.5 | 0.006" | 2° | 0.012" | Forward/Reverse, Start/Stop | 3488N14 | 000000 | ||
| 1/2" × 3/8" | 1 49/64" | 1 5/16" | 10,000 | 25 | 0.008" | 2° | 0.016" | Forward/Reverse, Start/Stop | 3488N16 | 000000 | ||
| 1/2" × 1/2" | 1 49/64" | 1 5/16" | 10,000 | 25 | 0.008" | 2° | 0.016" | Forward/Reverse, Start/Stop | 3488N17 | 000000 | ||
| 5/8" × 5/8" | 2 11/64" | 1 5/8" | 10,000 | 45 | 0.01" | 2° | 0.02" | Forward/Reverse, Start/Stop | 3488N18 | 000000 | ||
| 3/4" × 3/4" | 2 33/64" | 2" | 10,000 | 87 | 0.012" | 2° | 0.025" | Forward/Reverse, Start/Stop | 3488N19 | 000000 | ||
| 8 mm × 5 mm | 1 3/16" | 3/4" | 10,000 | 6.1 | 0.003" | 2° | 0.007" | Forward/Reverse, Start/Stop | 3488N2 | 000000 | ||
| 8 mm × 8 mm | 1 3/16" | 3/4" | 10,000 | 6.1 | 0.003" | 2° | 0.007" | Forward/Reverse, Start/Stop | 3488N21 | 000000 | ||
| 10 mm × 10 mm | 1 25/32" | 1 5/16" | 10,000 | 25 | 0.007" | 2° | 0.015" | Forward/Reverse, Start/Stop | 3488N22 | 000000 | ||
| 12 mm × 12 mm | 1 25/32" | 1 5/16" | 10,000 | 25 | 0.007" | 2° | 0.015" | Forward/Reverse, Start/Stop | 3488N23 | 000000 | ||
| 14 mm × 8 mm | 1 25/32" | 1 5/16" | 10,000 | 25 | 0.007" | 2° | 0.015" | Forward/Reverse, Start/Stop | 3488N27 | 000000 | ||
| 14 mm × 10 mm | 1 25/32" | 1 5/16" | 10,000 | 25 | 0.007" | 2° | 0.015" | Forward/Reverse, Start/Stop | 3488N24 | 000000 | ||
| 14 mm × 12 mm | 1 25/32" | 1 5/16" | 10,000 | 25 | 0.007" | 2° | 0.015" | Forward/Reverse, Start/Stop | 3488N25 | 000000 | ||
| 14 mm × 14 mm | 1 25/32" | 1 5/16" | 10,000 | 25 | 0.007" | 2° | 0.015" | Forward/Reverse, Start/Stop | 3488N26 | 000000 | ||
| 16 mm × 16 mm | 1 25/32" | 1 5/16" | 10,000 | 25 | 0.007" | 2° | 0.015" | Forward/Reverse, Start/Stop | 3488N28 | 000000 | ||
