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Tips for Rigging with Eye Bolts

Rigging | Safety and Training | by Columbus McKinnon Training | Jan 16, 2018


Jubal, an entertainment rigger from Local One IATSE and Columbus McKinnon safety webinar attendee, asked the following rigging question about eye bolts:

“Is it necessary to use only one washer when securing eye bolts or can the washers be stacked if necessary?”

 

Peter Cooke, Columbus McKinnon Training Manager, and Safety Webinar Presenter, answers:

If more than one washer is necessary, the eyebolt may need to be turned to align with the rigging. Please see the example below.

11-2016_Safety_Webinar.png


A shim can be added to reposition the orientation of the eyebolt. Most importantly, you must maintain proper engagement or tightness. A shim can vary in thickness depending on how you need to align the eyebolt, as when a 3/8  eyebolt with 16 thread per inch is used.  With 16 threads per inch, one turn would relate to .062” of movement into the mounting plate. If we divide this by 4 to get .0156” for our shim, the result will be a change in rotational position of the eyebolt of 90 degrees, which can be used as a reference dimension for adjusting the spacer on the eyebolt to achieve the proper orientation with the load.

For a more in-depth overview, view our safety webinar on the Safe Use of Lift Points:

Safety Webinar: Safe Use of Lift Points

In lifting applications, the need may arise to attach lift points to a load. How the lift points are attached can have a significant effect on the sling, the rigging hardware and the load itself. In this webinar, we will review some common items used as lift points, including eyebolts, swivel hoist rings and clamps and discuss when and how to use them safely and effectively.

Columbus McKinnon Training

Articles authored by "Columbus McKinnon Training" were written by industry professionals with decades of unique and in-depth experience in the material handling industry who are no longer employed by Columbus McKinnon.

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