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.

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Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place. Also known as Lovejoy® couplings, these three-piece couplings have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment.

Buna-N spiders provide good vibration damping and chemical resistance.

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Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screw to secure. Also known as Lovejoy® couplings, they have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment.

A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are aluminum for light weight and good corrosion resistance.

Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders provide fair vibration damping and good chemical resistance.

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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 discs stand up to high twisting forces. Nylon discs have excellent vibration and shock absorption. PEEK discs have excellent impact resistance and the chemical resistance to withstand a variety of acids and other harsh substances.

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Also known as Schmidt couplings, these handle higher angular misalignment than other three-piece couplings. Good for applications with varying shaft misalignment, they're commonly used with conveyor rollers and roller feeds in printing and packaging machines. Couplings clamp evenly around the shaft for a mar-free hold. Tighten the clamping screws to secure. They 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 aluminum for light weight and good corrosion resistance.

Hubs for 1/2" shaft dia. and above have a keyway. Hubs for metric sizes do not have a keyway (unless noted).

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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.

Pin-and-block U-joints work well in most applications since they handle higher torque at lower speeds than joints with ball bearings. Ball-bearing U-joints operate with less friction than pin-and-block joints, so they run at higher speeds.

Acetal U-joints weigh less than metal U-joints. They protect components in your system from stray electrical currents by blocking the flow of electricity between your shafts. 303 stainless steel U-joints balance strength with good corrosion resistance.

U-joints that connect with set screws don’t require you to drill any holes. 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.

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.

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To protect power-transmission components from damage, these couplings will shear or tear in overtorque conditions (approximately 10-20 times the maximum rated torque) to sever connections between shafts. They have a flexible center that not only compensates for misalignment, but also dampens vibration and shock loads. Couplings have no metal-on-metal contact, reducing noise and eliminating the need for lubrication. Fasten to your shaft by tightening the set screws, which bite into the shaft to hold it.

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