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Oldham Flexible Shaft Couplings

Oldham Flexible Shaft Couplings

Oldham flexible shaft couplings consist of two hubs and a plastic slotted disc that fits between the hubs. The slots on the disc mate with protrusions on the hubs and allow the hubs to move independently of each other. Oldham couplings can accommodate large amounts of parallel misalignment (shafts are misaligned but parallel) and small amounts of angular misalignment (shafts are set at an angle to each other) or axial misalignment (shafts are pulled apart or pushed together) when the coupling is connected between two shafts. If the torque load exceeds the maximum torque limit for the coupling, the center disc will break cleanly, causing the coupling to act like a torque limiter. The center disc can be replaced when worn or damaged. Oldham flexible shaft couplings allow zero backlash (or play) and don't require lubrication.

Set-Screw Mount Hubs

Choose two of these hubs and insert a compatible center disc between them to make an Oldham flexible coupling. Attach the hubs of these couplings to shafts using the included set screws. Once the coupling is in place, the set screw is tightened until it bites into the shaft material. For best results, the set screw should be made from a material that is harder than the shaft material.

Anodized Aluminum Without Keyway

12 in Hub OD

34 in Hub OD

1 in Hub OD

Clamp-On Mount Hubs

Create an Oldham flexible coupling that suits your application by connecting two of these hubs with a compatible center disc. Set screws are not required to hold these couplings in place, making them less likely to damage the shaft than set-screw mount couplings. The clamp-on design evenly distributes the gripping force around the shaft for a more secure hold than set-screw mount couplings and makes it easier to fine-tune the coupling's position on the shaft.

Anodized Aluminum Without Keyway

34 in Hub OD

1 in Hub OD

1 516 in Hub OD

1 58 in Hub OD

2 in Hub OD

2 14 in Hub OD

Anodized Aluminum With Keyway

1 516 in Hub OD

1 58 in Hub OD

Center Discs

Insert one of these slotted center discs between two compatible hubs to create an Oldham flexible coupling for your task.

For 12 in OD Hub

Black — High Torque Acetal

White — High Torsional Stiffness Nylon

For 34 in OD Hub

Black — High Torque Acetal

White — High Torsional Stiffness Nylon

For 1 in OD Hub

Black — High Torque Acetal

White — High Torsional Stiffness Nylon

For 1 516 in OD Hub

Black — High Torque Acetal

White — High Torsional Stiffness Nylon

For 1 58 in OD Hub

Black — High Torque Acetal

White — High Torsional Stiffness Nylon

For 2 14 in OD Hub

Black — High Torque Acetal