Crane Operator Certification Exam Prep · Question
Which of the following tower crane components is responsible for allowing the crane's upper structure to rotate 360 degrees, providing a wide area of coverage?
The slewing ring, or slew mechanism, is the critical component that facilitates the rotation of the crane's upper structure (jib and counter-jib) around the mas
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Question: Which of the following tower crane components is responsible for allowing the crane's upper structure to rotate 360 degrees, providing a wide area of coverage?
Answer options:
- The counter-jib
- The hoist winches ✅ The slewing ring (or slew mechanism)
- The mast sections
Correct answer: The slewing ring (or slew mechanism)
Explanation: The slewing ring, or slew mechanism, is the critical component that facilitates the rotation of the crane's upper structure (jib and counter-jib) around the mast, enabling the crane to service a large work area.
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Question explanations
- According to most Canadian provincial regulations, who is ultimately responsible for the safe operation of a c
- A crane's rated capacity decreases as the load radius:
- What is the minimum number of full wraps of wire rope that must remain on a hoist drum when the hook is in its
- Before setting up a mobile crane, what is the most important factor to assess regarding ground conditions?
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