What is the term for the opening where the cuff key is inserted?

What is the term for the opening where the cuff key is inserted?

• A. Key way
• B. Double lock
• C. Pawl
• D. Swivel

Answer: (A)

In mechanical power transmission, the slot that accepts a key to lock a shaft to a hub or pulley is called a keyway. The cuff key fits into this slot on both parts, filling the space so no relative motion occurs and torque can be transmitted from the shaft to the attached component. This arrangement ensures proper alignment and prevents slipping under load. Other terms describe different mechanisms: a double lock is a broader locking arrangement, a pawl is a lever that engages ratchet teeth, and a swivel is a pivot joint. So the opening where the cuff key is inserted is the keyway.

In mechanical power transmission, the slot that accepts a key to lock a shaft to a hub or pulley is called a keyway. The cuff key fits into this slot on both parts, filling the space so no relative motion occurs and torque can be transmitted from the shaft to the attached component. This arrangement ensures proper alignment and prevents slipping under load. Other terms describe different mechanisms: a double lock is a broader locking arrangement, a pawl is a lever that engages ratchet teeth, and a swivel is a pivot joint. So the opening where the cuff key is inserted is the keyway.