Lifting Eye Bolts

Eye Bolt Types

To choose the right lifting eye bolt type for your application, consider the angle at which the load must be attached. Angular requirements differ based on the MRO application type and significantly affect the bolt’s load capacity. Lifting eye bolts can handle less weight for angular loads compared to straight, vertical loads due to the instability and complexity of the attachment point. Select the proper design for the intended application from the four main types of lifting eye bolts:

• Fixed Eye Bolts: Used for lifting vertical loads in general applications.

• Fixed Blank (Unthreaded) Eye Bolts: Ideal for custom threading requirements.

• Shoulder Eye Bolts: These have a shoulder that provides extra strength and stability, allowing them to lift both vertical and angular loads. They are also known as shouldered or collar eye bolts.

• Forged Eye Bolts: Highly durable and designed for lifting heavy-duty loads.

3 Common Applications

1. Machinery Installation and Relocation

   Lifting eye bolts are often used to secure lifting devices, such as cranes or hoists, during the installation or relocation of heavy machinery. Shoulder eye bolts are typically the best choice because they can handle heavy weight and dynamic angular forces. Within this category, select an eye bolt with a lifting capacity higher than the machine's weight. For example, a machinery piece weighing 2,000 lbs would require an eye bolt with at least a 2,200 lbs capacity. Also, ensure the attachment point’s inside diameter matches the eye hook or shackle size.

2. Construction

   Lifting and positioning steel beams or prefabricated structures on construction sites require bolts that support heavy loads. Forged eye bolts with lifting capacities ranging from 10,000 to 20,000 lbs. are the optimal choice. Match the bolt’s thread size and length to the steel beam measurement specifications for secure fastening. Generally, full threading distributes loads more effectively.

3. Pipeline Maintenance

   Lifting and replacing heavy, bulky-shaped industrial pipelines requires precise placement and movement, best achieved with fixed eye bolts with lifting capacities from 4,000 to 10,000 lbs. Ensure the eye bolt’s thread length fits the load without excess protrusion, as protrusion may cause instability and add stress to the bolt, potentially misaligning the attachment and risking accidents or equipment failure.

Best Practices and Safety Tips

Follow the safety guidelines to minimize accidents:

• Match bolt size and lifting capacity to the load requirements. Fit the inside diameter to the eye hook or shackle size. Match the thread size and length to the application requirements. For example, choose full threading for heavier loads.

• Regularly inspect eye bolts for signs of wear, deformation, or damage.

• Install eye bolts in alignment with the load angle to avoid bending or breaking. Use additional washers, nuts, and eye screws for added stability as needed.

• Perform load testing to verify the eye bolt can safely support the given load. Always choose an eye bolt with a lifting capacity higher than the load weight.

• Adhere to the manufacturer's instructions for installation, use, and maintenance.

• Provide comprehensive training to teach operating personnel how to properly use and maintain lifting eye bolts. Organizations, such as the National Safety Council (NSC) or the Occupational Safety and Health Administration (OSHA), offer training programs.

Additional Tools for Bolt Installation

To properly install lifting eye bolts, you need several related industrial tools. Torque wrenches apply the correct torque to tighten eye bolts, while thread-locking compounds secure end threads. This strong attachment prevents bolts from loosening under heavy loads, maintaining installation stability. Additionally, MRO personnel must wear protective gear, including safety gloves and eye protection, to prevent injuries while installing and working with lifting eye bolts.

Related Product Categories:

• Carriage Bolts

• Flange Bolts

• Plow Bolts

• Freight Car Bolts