Steel plants operate some of the largest, most heavily loaded mechanical systems in industry. Nearly every stage of steel production requires controlled torque, speed reduction and heavy power transmission. Gearboxes allow electric motors and turbines to deliver the massive torque needed to move steel slabs, rolls and material through production lines. These systems require precise, synchronized movement under high loads. Without reliable gearboxes, steel cannot move through the plant.

Why gearboxes in steel mills fail:

Steel plants are among the harshest environments for rotating equipment. Failures typically occur due to a combination of mechanical stress, contamination and maintenance issues:

• Extreme mechanical loads that over time cause gear tooth cracking, pitting and spalling
• Poor lubrication that leads to accelerated wear and bearing damage
• Misalignment between motors, couplings and gearboxes that can cause uneven gear loading, excess vibration and premature bearing failure
• Overheating that can degrade lubricant, distort components and reduce bearing life
• Contamination from mill scale, dust, water and metal particles and can enter the gearbox and cause abrasive wear
• Age and fatigue of decades-old equipment, including outdated designs not suited for current production levels

The consequences of gearbox failure in a steel plant:

• Production shutdowns costing hundreds of thousands of dollars per day.
• Scrap and product loss
• Damage to motors, rolls, couplings and drive shafts thus multiplying repair costs
• Safety hazards from flying debris from gear breakage, locked or runaway rollers and dangerous mechanical shock loads

We repair, rebuild and troubleshoot any and all brands of gearboxes used in the steelmaking process. Whether it is a rolling mill, straightener, ladle car or other process critical gearbox, our years of experience in steel enable us to quickly assess equipment for potential problems and repair or rebuild as necessary, reverse-engineering all components to equal or better quality than original.

Our Field Machining and Services crews can perform on-site gearbox inspections and rebuilds as well as line boring, journal turning, flange facing and base milling.