Keys and Keyways

A key is a common machine element found in rotating equipment used to connect a rotating component to a shaft. The key prevents movement and relative rotation between the component and the shaft and may also enable torque transmission. To function properly, the shaft and rotating component must have a keyway and a keyseat, which is a groove and pocket where the key is fitted. Keyways are cut vertically or horizontally along the surface of a shaft and the type of key and keyway that is milled depends on what type of work it is intended for. Keyways are commonly used in gears, impellers, stub shafts, couplings, pump sleeves, or any part that requires an internal keyway or slot for connection. Though keyways are often cut on key seating machines; they can also be cut using wire-cut EDM, shaping, and milling.

Keyway Milling

Keyway milling, when performed, is able to cut partial length, straight or tapered keyways into a shaft. This method is commonly used to mill external shaft keyways. When milling with an end mill, a hole with the same diameter as the milling cutter is drilled at one end of the groove bottom, and the depth is the same groove depth.

Parallel Keyway
Parallel Keyway
Parallel Keyway

Our Capabilities

When your material requires internal keyways, such as couplings, hollow shafts, and other power transmitting components you can count on Double Eagle Alloys to manufacture your shafts in various sizes and specifications per your project requirements  – as small as 1/16″ up to 3/4″. Using our state-of-the-art keyway cutting production equipment, our qualified machinists are capable of producing parallel keys, woodruff keys, and double-ended keyways with the proper attachments.

Double Eagle Alloys Keyway Capabilities