Blog posts of '2023' 'July'

There are several common types of end fittings used for sling legs in lifting and rigging operations. The choice of end fitting depends on factors such as the type of sling material, the application requirements, and the load capacity. Here are some commonly used end fittings for sling legs:

1. Hooks: Hooks are widely used end fittings for sling legs. They come in various designs, such as clevis hooks, grab hooks, and sling hooks. Hooks provide a secure attachment point to the load or to other rigging components.

2. Shackles: Shackles are commonly used end fittings for sling legs. They are available in different configurations, including screw pin shackles and bolt-type shackles. Shackles offer a strong and reliable connection point for attaching sling legs.

3. Thimbles and Thimble Eyes: Thimbles are used to protect the sling material, such as wire rope or synthetic rope, from wear and damage at the eye of the sling leg. Thimble eyes are created by looping the sling material around the thimble, providing a reinforced attachment point.

4. Links and Rings: Connecting links or rings, such as master links or connecting links, can also be used as end fittings for sling legs. They provide a central attachment point for multiple sling legs, allowing for a balanced and secure lifting configuration.

5. Soft Eyes: Soft eyes are created by forming a loop in the sling material, usually through splicing or sewing, to create an end fitting that can be attached to hooks, shackles, or other connectors. Soft eyes offer flexibility and versatility in attachment options.

6. Swivel Hooks: Swivel hooks have a rotating mechanism that allows the sling leg to rotate freely, reducing twisting or kinking of the sling during lifting operations. Swivel hooks provide improved load stability and reduced stress on the sling leg.

It is important to note that the selection of the appropriate end fitting should consider factors such as the working load limit, compatibility with the sling material, and compatibility with other rigging components. Additionally, following the manufacturer's recommendations and applicable safety standards is essential to ensure the safe and effective use of end fittings for sling legs.

On 06 June 2023, a bright sunshine days with hot temperature, same as our hot passion to welcome our sincerely foreign customer, who are coming with long times flight travel, crossing half earth, just for the deep & strategic cooperation on the lifting & hoisting hardware.

Starting from Qingdao Airport, the deep communication and site & factory & manufacturing plant visiting within a so tight schedule. Then sitting together for the briefing of our company development history, business branches, products making up, quality control, foreign distributor evaluation, future development ,also other their cared and key pointed topics, both of our company responsible officer and our customer have done a bright & intelligent conversation.

Good products and excellent company always can attract their valued customer, it dose not matter the far distance, different language , geographical environment and so on.

Basing on sustainability idea of development, strictly quality rule to the products, plus critical attitude that never compromises on price

Qingdao Haosail --- A trustworthy & cooperated lifting and rigging hardware products supplier

Thimbles are hardware components used in sailboat rigging systems to protect wire ropes from wear and deformation when they form loops or eyes. They help maintain the strength and shape of the wire rope, preventing chafing and damage. Here's some information about thimbles:

1. Design: Thimbles are typically small metal or nylon inserts that are placed inside a loop or eye formed by a wire rope. They are designed to distribute the load evenly along the length of the loop and prevent the wire rope from coming into direct contact with sharp edges or abrasive surfaces.

2. Material: Thimbles are commonly made of stainless steel, galvanized steel, or high-strength polymers. Stainless steel thimbles are highly resistant to corrosion and are often used in marine applications. Galvanized steel thimbles provide good strength and durability. Nylon thimbles are lightweight and offer excellent resistance to abrasion.

3. Types of Thimbles: There are different types of thimbles available, including:

   • Standard Thimbles: Standard thimbles have a cylindrical or tubular shape and are the most common type. They are used in various rigging applications and provide general protection for wire rope loops.

   • Heavy-Duty Thimbles: Heavy-duty thimbles are designed for higher load applications. They have thicker walls and are more robust compared to standard thimbles, providing added strength and durability.

   • Open-Ended Thimbles: Open-ended thimbles have a gap or opening along their length, allowing for easy installation or replacement of the wire rope without the need for disconnecting other rigging components.

   • Solid Thimbles: Solid thimbles do not have any openings or gaps. They provide maximum support and protection for the wire rope, but they require the wire rope to be disconnected for installation or replacement.

4. Usage: Thimbles are used in various rigging applications where wire rope forms loops or eyes. They are commonly used in standing rigging, such as shrouds and stays, to protect the wire rope where it connects to chainplates or other fittings. Thimbles can also be used in running rigging applications, such as attaching halyards or sheets to blocks or pulleys.

5. Installation: To install a thimble, the wire rope is formed into a loop or eye, and the thimble is inserted into the loop, ensuring that the rope fits securely around the thimble. The thimble can then be secured using appropriate rigging hardware, such as swage terminals, wire rope clips, or mechanical fittings.

6. Inspection and Maintenance: Regular inspection of thimbles is important to check for any signs of wear, corrosion, or damage. If any issues are identified, the thimble should be replaced promptly to ensure the continued protection and integrity of the wire rope.

Thimbles play a crucial role in protecting wire ropes and maintaining the strength and durability of sailboat rigging. It's important to select the appropriate type and material of thimble for your specific rigging application and consult with a professional rigger or follow the sailboat manufacturer's guidelines for proper installation and maintenance.

Shackles should be inspected and maintained regularly to ensure their continued safe use. The frequency of inspection and maintenance will depend on the specific application and conditions of use, but general guidelines are as follows:

1. Pre-use Inspection: Shackles should be inspected before each use to ensure they are in good condition and free from damage. This inspection should include checking for cracks, bends, corrosion, and wear on the shackle body and pin. The pin should also be checked to ensure it is straight and the threads are in good condition.

2. Regular Inspection: Shackles should be inspected regularly, based on the frequency and conditions of use. In general, shackles used in normal working conditions should be inspected at least once a year, while those used in severe or harsh conditions may require more frequent inspections.

3. Maintenance: Shackles should be cleaned and lubricated regularly to prevent corrosion and ensure smooth operation. Any damage or wear should be repaired or replaced immediately.

It is also important to follow industry standards and manufacturer's recommendations for the use and maintenance of shackles, as well as to train personnel on proper handling, use, and inspection procedures. Any suspected or observed defects or damage should be reported and addressed immediately to prevent any potential safety hazards.