Roymech engineering encyclopedia

Lifting Equipment and Rigging – Eyebolts, Shackles and Lifting Components




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Lifting equipment and rigging components are used in engineering to safely lift, secure and move loads. Common components include eyebolts, shackles and lifting links designed to handle specific loads and lifting angles.

This section provides engineering information on lifting components, safe working loads (SWL) and standards used in mechanical and industrial applications.

Lifting Equipment Types

The pages below cover common lifting components including eyebolts and shackles, their applications and limitations when used in lifting operations.


Collar Eyebolts

Collar Eyebolts

Dynamo Eyebolts

Dynamo eyebolts have a larger eye but lower safe working load. Their load capacity is significantly reduced when used for angled lifting.

Dynamo Eyebolts

Bow Shackle

Bow shackles have a rounded shape allowing loads to be applied from multiple directions without excessive side loading.

Bow Shackle

Dee Shackle

Dee shackles are shaped like a "D" and are used for straight-line loads. They are commonly used in rigging and lifting systems.

Dee Shackle

Eyebolt with Links

Eyebolts with links provide additional connection points for hooks, chains and slings in lifting applications.

Eyebolts with Links



Lifting Equipment Standards

Eyebolts:

  • BS EN 1808: "Safety requirements for cableway installations designed to carry persons - Eyebolts"
  • BS 4278: "Code of practice for testing of safety bolts and eyebolts"
  • BS 13200-7: "Cranes - Safety - Part 7: Eye bolts for lifting purposes - Properties and requirements"

Shackles:

  • BS EN 13889: "Forged steel shackles for general lifting purposes - Dee shackles and bow shackles - Grade 6"
  • BS 3032: "Specification for shackles"
  • BS 3032-1: "High tensile shackles for general engineering purposes - Part 1: Dee shackles and bow shackles - Commercial types"

Relevant US standard for eyebolts and shackles:

ASME B30.26 for eyebolts and ASME B30.26 for shackles in the United States

Transport Data

Link to different types of transport vehicles: Transport Vehicles