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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).
303 Stainless Steel—303 stainless steel hubs offer excellent corrosion resistance.
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 | ||||||
303 Stainless Steel Hubs | |||||||||||||||||||||||||||||||||||
| 1" | 3/4" | Round | Forward/Reverse, Start/Stop | 7 mm, 8 mm | 9889T82 | 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" | Round | Forward/Reverse, Start/Stop | 10 mm, 11 mm | 9889T83 | 000000 | 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 | ||
| 2" | 1 5/8" | Round | Forward/Reverse, Start/Stop | 20 mm | 9889T869 | 000000 | 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 | ||
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 | 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 1/4" | 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 | ||
Cleaned and Bagged Flexible Shaft Couplings
 |
Often used in electronics manufacturing facilities and other extra-clean environments, these shaft couplings are cleaned and individually bagged to keep out contaminants. Their center also doesn’t outgas much, helping keep contaminants low as well. All are compatible with most commercial acids except concentrated nitric and sulfuric acid. Also known as Oldham couplings, their slotted center lets the hubs slide independently, so they’re good for applications with parallel shaft misalignment. They never require lubrication.
Misalignment Capability | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Diameter | Overall Lg., mm | OD, mm | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel, mm | Angular | For Rotary Motion | Temp. Range, ° F | Each | |||
2017 Aluminum with PEEK Center | ||||||||||||
| 5 mm × 5 mm | 22 | 20 | 31,000 | 10 | 1.3 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N37 | 0000000 | ||
| 5 mm × 6 mm | 22 | 20 | 31,000 | 10 | 1.3 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N38 | 000000 | ||
| 5 mm × 8 mm | 22 | 20 | 31,000 | 10 | 1.3 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N39 | 000000 | ||
| 6 mm × 6 mm | 22 | 20 | 31,000 | 10 | 1.3 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N41 | 000000 | ||
| 6 mm × 8 mm | 22 | 20 | 31,000 | 10 | 1.3 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N42 | 000000 | ||
| 8 mm × 8 mm | 27 | 25 | 25,000 | 20 | 1.5 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N44 | 000000 | ||
| 8 mm × 10 mm | 27 | 25 | 25,000 | 20 | 1.5 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N45 | 000000 | ||
| 10 mm × 10 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N47 | 000000 | ||
| 10 mm × 11 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N48 | 000000 | ||
| 10 mm × 12 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N49 | 000000 | ||
| 10 mm × 14 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N51 | 000000 | ||
| 11 mm × 11 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N52 | 000000 | ||
| 11 mm × 12 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N53 | 000000 | ||
| 11 mm × 14 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N54 | 000000 | ||
| 12 mm × 12 mm | 33 | 32 | 19,000 | 45 | 2 | 2° | Forward/Reverse, Start/Stop | 0 to 240 | 8819N55 | 000000 | ||
