We have compiled the 20 most frequently asked questions in the lifting equipment category, covering cranes, hoists, slings, and accessories.
General Questions
1. What is lifting equipment?
It is the general term for mechanical, hydraulic, or electric systems used to lift, move, or position a load.
2. What is the difference between WLL and SWL?
Both mean “safe working load”; WLL (Working Load Limit) is used in more modern standards, while SWL (Safe Working Load) is used in older terminology.
3. How often should lifting equipment be inspected?
Under Law No. 6331, inspection is mandatory for most equipment at intervals ranging from 3 to 12 months.
4. Can equipment without a capacity label be used?
No, equipment without WLL/SWL information should not be used for safety reasons.
Questions About Hoists
5. Up to what tonnage are electric hoists manufactured?
The chain type can go up to 20 tons, and the wire rope type can exceed 100 tons.
6. What is hoist duty class (FEM/ISO)?
It is a standard (such as M3, M4, M5) that defines a hoist's durability class based on usage frequency.
7. What jobs is a manual chain block used for?
It is preferred at sites without electricity, for low-frequency lifting jobs.
Sling and Accessory Questions
8. How does sling angle affect capacity?
As the angle increases (moves away from vertical), the load on each leg increases; capacity drops noticeably at 60 degrees.
9. Should a chain sling or a wire rope sling be preferred?
Chain is preferred in high-heat environments, and wire rope sling for general use.
10. What are the types of shackles?
D-shackle and bow shackle are the two most commonly used types.
11. What is a swivel used for?
It allows the load to rotate freely during lifting, preventing the rope from twisting.
Below-the-Hook Device Questions
12. What is the difference between a C-hook and a coil lifter?
A C-hook grips the coil from the outside, while a coil lifter grips it from the inside (with a mandrel).
13. Are plate clamps manufactured in horizontal and vertical types?
Yes, there are two types with different mechanisms depending on orientation of use; they should not be substituted for one another.
14. On which surfaces does a vacuum lifter not work?
It does not work on porous, rough, or perforated surfaces, since sufficient vacuum cannot form.
Jack and Platform Questions
15. Can a hydraulic jack be left under load after lifting?
No, it must always be supported with jack stands.
16. Does a scissor lift provide horizontal movement?
No, it only rises vertically; a boom lift is needed for horizontal reach.
Safety and Regulatory Questions
17. Must a lifting equipment operator hold a certificate?
Yes, an MYK-approved operator certificate is legally required for cranes and mobile lifting equipment.
18. How can equipment with degraded capacity be identified?
Visible deformation, cracks, excessive wear, or a missing label mean the capacity can no longer be relied upon.
19. Are below-the-hook devices also subject to inspection?
Yes, these devices are also classified as lifting equipment and require periodic inspection.
20. Which lifting equipment does Yeni Doğan Çelik Halat supply?
We supply wire rope, slings, lifting eyes, swivels, shackles, and lifting accessories with extensive stock and engineering support.