National Mechanical Power Systems | Purvis Industries


  • PICOR Gates, Diverters, Loading Systems and Reclaim Systems
  • Mining Supplies and Equipment
  • Underground mining conveyors and equipment

Your source for industrial gearbox repair and condition monitoring systems

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Our National Mechanical Power Systems business unit focuses on large gearing applications and challenges. We offer assistance in gearbox during system layout and help after installation with condition monitoring, oil sampling, or oil analysis.  


We repair industrial gearboxes both internally and through strategic partners. Looking for a simple seal and bearing replacement? No problem! Do you have a gearbox with broken teeth?  We can work with you to repair it and return it to your facility in minimal time. We can retrofit existing gearboxes with case-carburized gear, increasing the power density that gear can handle.


We offer custom gear solutions, too! We supply ring gears and segmented gears for kiln applications or other large rotating equipment. Need a custom ratio or dimension? We may be able to design a solution. Need a large gearbox? We keep up to a size 12 shaft-mount gearbox on our shelf and can order a size 14.


Have you heard about the Internet of Things or Industry 4.0, but are not sure how you could make use of it? We offer a variety of condition monitoring systems for gearing applications! On factory-built gear reducers, we can offer complete monitoring solutions. These systems can monitor up to 14 different channels of key reducer data, including vibration analysis!


Why do you need to worry about IoT? Because the data provided gives you the ability to perform predictive maintenance on your equipment, extending the equipment’s life and saving you money. Preventing sudden catastrophic failure is easier with a condition monitoring system.

Open gearbox with gearsets

Smart Gearbox with IIoT Sensor Package