Fleet angle shall not exceed how many degrees?

Fleet angle shall not exceed how many degrees?

• A. 1 degree
• B. 1 1/2 degrees
• C. 2 degrees
• D. 3 degrees

Answer: (B)

Fleet angle is the angle between the two legs of the hoisting rope as they leave the drum over the sheave. Keeping this angle small is crucial because a larger fleet angle causes more rubbing and uneven loading of the rope on the drum grooves, which accelerates wear, can lead to rope slippage, and may shorten rope life or cause failure. The standard limit is 1.5 degrees, so the fleet angle should not exceed that value. To stay within this limit, use a drum with an appropriate diameter relative to the rope, and ensure the rope exits the drum as symmetrically as possible to minimize the angle.

Fleet angle is the angle between the two legs of the hoisting rope as they leave the drum over the sheave. Keeping this angle small is crucial because a larger fleet angle causes more rubbing and uneven loading of the rope on the drum grooves, which accelerates wear, can lead to rope slippage, and may shorten rope life or cause failure. The standard limit is 1.5 degrees, so the fleet angle should not exceed that value. To stay within this limit, use a drum with an appropriate diameter relative to the rope, and ensure the rope exits the drum as symmetrically as possible to minimize the angle.