Turbine, Compressor and Wind Energy Industry

PRG offers a wide variety of precision grinding, machining and repair services to industries using large shafts, cylinders, turbines and pulleys. Our solutions are well-known in the defense, shipbuilding, power generation and manufacturing industries.

As wind energy gains market share across energy industries, PRG’s ability to manage heavy shafts and large rotational components ensures superior performance – even at the world’s largest offshore wind farms.


PRG’s Specialty Services

PRG specializes in journal, high-speed rotor, high-speed armature, and shaft repairs and grinding, flange adjustments and clean-up for a variety of applications:

  • Wind Turbine Main Shafts
  • Natural Gas Power Turbines
  • Diesel Electric Power Generators
  • Steam Generators
  • Large Compressors
  • Hydro Power Generators
  • Large Pumps

PRG handles even the largest assemblies. Our physical capabilities are among the best in the nation. No other roll grinding service can handle the depth of service needs in the wind and turbine industry.





2” to 144” (50mm to 3,660 mm)

66” over carriage (1,680 mm over carriage)

78.7” over ways (2,000 mm over ways)


Up to 600” (15,240 mm)

Up to 840” (21,336 mm)


Up to 240,000 lbs. (109,091 kg)

Up to 200,000 lbs. (90,910 kg)


Avoid Unplanned Downtime!

Let us work with your plant to:

  • Create a maintenance plan that works around your schedule
  • Guarantee faster, easier emergency repair in the event of unforeseen issues
  • Work with your Operations Managers and Maintenance Supervisors to identify any possible areas of concern


PRG offers emergency service as well as fabrication and grinding services, for spare or new replacement parts to reduce downtime due to scheduled maintenance or unplanned equipment failure. Our service begins with a consultation at your facility.


If you experience any of the following issues with your turbines and assemblies, give us a call. The consultation is absolutely free.

  • We have excessive vibration in our turbine.
  • Can you correct the bearing inner race movement to eliminate slippage?
  • How do we get poor electrical runout readings corrected?
  • Can the axial movement on our shaft be reduced or eliminated?
  • Our current grinding and machining providers are not meeting specifications. Can PRG do this work?


Call today to speak to the experts at Precision Roll Grinding.

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