Split Eccentrics Shafts

Eccentrics Shafts for Cooling Bed

GMB Heavy Industries has successfully completed the Phase 2 of replacing Billet Bed’s Eccentric shafts to Split Eccentrics Shafts for a Steel Mill in Arkansas. Our custom solution was provided to the client after Engineering Feasibility Studies, Engineering design, and animations that was created to show the current issues and solutions to solve them.

Main Issues of the Billet-Bed:

The original Cooling Bed was designed to rotate the long products aggressively. Since the steel mill is built to make SBQ (Special Bar Quality) products, aggressive rotation caused several issues, such as:

  • Product Roll Back
  • Low-quality bars
  • Product’s straightness damage
  • long maintenance hours

Poor design of the original Cooling Bed caused damages to the SBQ product, and it resulted in producing lower than expected finished product (Tons/Hour).

Scope of Work:

In the past four decades, GMB Heavy Industries has been the leader in the North American steel mill industry to design, produce, maintain, and install Long-Product Cooling Beds. We have been referred to many Steel Mills in the United States to design new, manufacture, support or to provide custom solutions for Cooling Beds. In this project, our team has:

  • Redesigned and modified the eccentrics throw of both sets of Cams “Lift and Traverse,” to improve the carry-over of the product as it travels across the bed from Cooling Bed’s Rake Tooth to Rake tooth.
  • Improved the geometry of the mechanism to reduce free movement of the Carriage when at top dead Center.
  • Eliminated product roll back or fall off when conveyed in the smallest of the three notches in the Rake profile.
  • Significantly reduced maintenance time spent when changing worn parts by replacing the solid cams with a new split design.

Split Eccentrics Shafts Manufacturing and Installation:

GMB Heavy Industries’ team of experts provided a complete solution to our client based on their requirements. The recommendations were advised to the client through many animations of their current product behavior on the billet bed. With the use of Engineering Feasibility Studies and engineering design of different Cams, we showed to our clients that using the Split Eccentrics under the Cooling Bed would be the best option to improve rotation and behavior of product and clearances between product and Rake tips during operation.

After design approval, GMB Heavy Industries’ engineering team manufactured the Split Eccentrics Shafts, and our professional millwrights installed the first two phases of this project. After phase two and replacing eight Eccentrics to Split Eccentrics, we have confirmed that the rollback and straightness damage issues were solved. In addition to addressing the existing problems, Split Eccentrics will also significantly reduce the Steel Mill Maintenance hours.

When a customer partner with GMB to custom design and manufacture their Rolling Mill Equipment, our engineering team will use the latest technologies and tools to study and test different solutions to provide the most productive and a cost-effective solution. If you are looking for an equipment or Steel Mill Spare Parts, we are ready to create a competitive quotation.

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