What is the Swivel lock?
The elebia automatic hooks are equipped with a swivel bearing that allows the hook to rotate freely on its own axis. This feature is essential as it enables the load to self-align during lifts, thereby preventing the sling or wire rope from twisting. However, in certain applications, it may be necessary to keep the hook in a fixed angular position. For these scenarios, elebia offers two distinct elements designed to restrict rotation.
The Two Swivel-Locking Elements
1. Anti-Rotation Plate (Evo2)
The anti-rotation plate is specifically designed to block the hook from rotating on its own axis. To lock the hook's rotation, the plate must be unscrewed and turned so that it aligns with the plane of the suspension.
2. Swivel Lock Clamps
The swivel lock clamps, are toothed clamps that grip the swivel assembly and fix it at a specific angle, effectively preventing free rotation. These clamps are an optional accessory. When new hooks are shipped with locking clamps included, they are supplied loose and uninstalled. This is intentional, as the correct orientation of the clamps depends on the specific installation requirements of the customer. For models other than the evo25, please refer to the appropriate part reference for the swivel lock.
How to Install the Swivel Lock Clamps
1. Hang the Hook: Position the hook in its working position on the crane.
2. Orient the Hook: Manually adjust the hook to the desired angle.
3. Place the Clamps: Position the toothed clamps around the swivel assembly at the chosen angle.
4. Tighten the Bolts: Secure the clamp bolts using self-locking nuts and washers.
5. Verify Functionality: Ensure that the hook body no longer rotates and that the opening/closing mechanism operates normally.
Note: The toothed design of the clamps may leave marks on the swivel surface once tightened, so it is important to confirm the desired position before final assembly.
Swivel Bearing Maintenance
Regardless of whether the swivel is locked, the bearing requires periodic maintenance. To keep it in optimal condition:
- Clean: Use compressed air or a soft brush to remove dust and debris.
- Lubricate: Apply a lubricant spray (such as WD-40 or an equivalent). Avoid using grease, as it can mix with airborne dust or particles, forming a solid compound that may block swivel movement.