The thick split spider on these couplings takes on twice as much torque as standard split spiders, while a set screw holds the hubs in place on your shaft. Also known as jaw couplings, use them to connect motors to pumps, mixers, and other high-torque equipment. You don’t need to lubricate them.

For a complete coupling, you’ll need two hubs, one split spider, and a split spider cover (all sold separately).

Hubs attach to the end of your shaft.

Split spiders cushion between the two hubs to dampen vibration, reduce shocks, and handle shaft misalignment, extending the life of bearings, seals, and motors. You can replace them without having to remove the hubs or move your shaft and equipment around, which reduces the risk of needing to realign the shaft.

Split spider covers hold the spider in place.

Safely connect slightly misaligned shafts near food lines—the spider on these couplings contains metal, so it’ll trigger a metal detector if a piece frays off and contaminates your batch. The hubs are made of 303 stainless steel to resist rusting in wet conditions common to food plants. However, these couplings shouldn’t directly touch food, since they’re not FDA compliant. If the spider fails, the hubs will interlock, giving you time to shut down equipment before other components break. You don’t need to lubricate these couplings.

Also called Lovejoy® and jaw couplings, a complete coupling requires two hubs and one spider (all sold separately).

Hubs attach to the end of your shaft and have a set screw that bites into the shaft to hold the coupling in place.

Spiders cushion between the two hubs to reduce shocks and handle minor shaft misalignment.

Metal-Impregnated Buna-N—Metal-impregnated Buna-N spiders are the most commonly used and are good for applications that start, stop, and reverse often. They also dampen vibration and resist some chemicals.

Metal-Impregnated Hytrel—Metal-impregnated Hytrel spiders run at higher torque and resist chemicals better than Buna-N spiders. However, they shouldn’t be used in applications that start, stop, and reverse frequently.