Crane Operator Certification Exam Prep · Question
What is the primary function of a crane's slewing brake?
The slewing (swing) brake is designed to lock the crane's superstructure in a desired position, preventing uncontrolled rotation, especially during load handlin
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Question: What is the primary function of a crane's slewing brake?
Answer options: ✅ To hold the superstructure stationary and prevent unwanted rotation.
- To control the speed of the hoist drum.
- To lower the boom smoothly.
- To engage the crane's outriggers.
Correct answer: To hold the superstructure stationary and prevent unwanted rotation.
Explanation: The slewing (swing) brake is designed to lock the crane's superstructure in a desired position, preventing uncontrolled rotation, especially during load handling or when the crane is parked. Hoist, boom, and outrigger functions have their own dedicated controls and brakes.
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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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