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System of Measurement
Shaft Diameter
Shaft Mount Type
Flexible Shaft Coupling Cut Style
Shaft Type
For Rotary Motion
Maximum Torque
Export Control Classification Number (ECCN)
Performance
RoHS
DFARS Specialty Metals
Finish
Maximum Rotation Speed
Clamping Screw Material
Rotation Speed
Torque
Precision Beam Couplings
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Spiral Cut |
Machined with slits, these one-piece couplings flex to transfer full torque (zero backlash) and compensate for tiny misalignments.
Spiral Cut—Long slits along the surface help the coupling flex and handle greater misalignment than parallel cut couplings. They're also less rigid, so they're best used with light duty machinery, such as encoders and stepper drives. Also known as helical beam couplings.
Aluminum—Lightweight and corrosion resistant.
Clamp-On Shaft Mount—Grip shafts evenly without marring them and hold tighter than set screws. Tighten the clamping screws to secure.
Set-Screw Shaft Mount—Screws dig into your shaft for a secure hold.
Misalignment Capability | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Choose a Shaft Dia. | OD | Overall Lg. | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Axial | For Shaft Type | Shaft Mount Type | Each | |||
Spiral Cut | |||||||||||||
Aluminum | |||||||||||||
| 1/8" × 3/32" | 1/2" | 3/4" | 10,000 | 5 | 0.005" | 2° | 0.005" | Round | Clamp On | 6208K361 | 0000000 | ||
| 5/32" × 3/32" | 1/2" | 3/4" | 10,000 | 5 | 0.005" | 2° | 0.005" | Round | Clamp On | 6208K363 | 000000 | ||
| 3/16" × 3/32" | 1/2" | 3/4" | 10,000 | 5 | 0.005" | 2° | 0.005" | Round | Clamp On | 6208K366 | 000000 | ||
| 1/4" × 3/32" | 3/4" | 3/4" | 10,000 | 20 | 0.006" | 3° | 0.006" | Round | Clamp On | 6208K427 | 000000 | ||
| 1/4" × 3/32" | 3/4" | 3/4" | 10,000 | 20 | 0.006" | 3° | 0.006" | Round | Set Screw | 9861T427 | 00000 | ||
Precision Single U-Joints
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Ball-Bearing Joint |
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Ball-Bearing Joint |
A good choice when you need accurate and repeatable motion, these U-joints have zero backlash (no play), so there’s no motion lost when your shafts change direction. This keeps machines running smoothly. They’re single U-joints, so they connect and transfer torque between shafts that are misaligned at an angle.
Your shafts’ misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.
Ball-Bearing Joint—Ball-bearing U-joints operate with less friction than pin-and-block joints, so they run at higher speeds.
303 Stainless Steel—303 stainless steel U-joints balance strength with good corrosion resistance.
Spring-Pin Shaft Mount—U-joints that connect with spring pins require you to drill holes through both the U-joint and your shafts. Spring pins are not included.
Lubrication Not Required—U-joints that don’t require lubrication are often used with optical devices and other sensitive equipment because they're less likely to attract dust and debris compared to lubricated U-joints. They’re also easier to maintain.
For Shaft | Torque | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dia. | Dp. | Joint Dia. | Overall Lg. | Max. Operating Angle | Max. Rotation Speed, rpm | Max. Torque, in·lbf | 5° Operating Angle | 10° Operating Angle | Shaft Mount Type | Lubrication | Each | |||
Ball-Bearing Joint | ||||||||||||||
303 Stainless Steel | ||||||||||||||
| 3/32" | 11/32" | 3/16" | 1" | 30° | 4,000 | 1 | 0.9 in·lbf @ 1,500 rpm | 0.8 in·lbf @ 1,500 rpm | Spring Pin | Not Required | 60075K74 | 000000 | ||
Two-Piece Shaft Collars
Set Screw Shaft Collars
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Set Screw | ||||||||
|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | OD | Wd. | Type | No. Included | Each | |||
Black-Oxide Carbon Steel | ||||||||
| 3/32" | 3/8" | 3/16" | Hex Socket | 1 | 9414T2 | 00000 | ||
Zinc-Plated Carbon Steel | ||||||||
| 3/32" | 3/8" | 3/16" | Hex Socket | 1 | 6432K72 | 0000 | ||
303 Stainless Steel | ||||||||
| 3/32" | 3/8" | 3/16" | Hex Socket | 1 | 6462K72 | 0000 | ||
316 Stainless Steel | ||||||||
| 3/32" | 3/8" | 3/16" | Hex Socket | 1 | 9943K12 | 00000 | ||
Aluminum | ||||||||
| 3/32" | 3/8" | 3/16" | Hex Socket | 1 | 9946K2 | 0000 | ||
Shaft Collars
