A Letter From Our President. During the current situation with the COVID-19 virus, Precision Roll Grinders remains open for business to meet all of our customers’ roll servicing needs. The health and safety of our employees, as well as our customers and partners, is of primary concern. We are monitoring the COVID-19 situation very closely, taking appropriate health measures, and are confident we can abide by locally imposed policies while continuing to seamlessly support and provide value to our customers’ business operations. If you have any questions about PRG’s accessibility or operations please do not hesitate to contact us.

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When your Sander Tension Rolls, Sander Guide Rolls and Sander Pressure Rolls are round, free of chatter, and working at — or better than — OEM specifications, your mill benefits from consistent and accurate production.

The roll grinding services at PRG guarantee round rolls with tolerances of up to +/- 20 millionths of an inch, providing numerous benefits to your mill’s production such as improved product quality, very uniform product thickness due free of sander roll defects, improved process efficiency, reduced downtime due to unplanned maintenance and equipment failure, and reduced waste and energy consumption.

We keep your rolls well maintained so you keep up and running. Our maintenance includes:

  • Ensuring rolls are round and concentric with profiles in specification in all 360°F around the roll
  • Removal of roll defects
  • Complete inspection of housing and bearings
  • Correction of bearing and journal fit so that rolls run to full bearing life
  • Detailed cleaning and painting of housing
  • Match set requirements for the diameter of drive roll pairs

PRG’s service includes adjustments to all four critical aspects of roll optimization:

If your rolls are out of specification, you’re bound to have performance problems. Your equipment will not run as fast and will, in time, cause inconsistencies throughout your product. To prevent this, our service addresses all four critical aspects of roll optimization:

  • Balance — PRG’s Dynamic Balancing Machine enables the precise simulation of your plant’s operating conditions, allowing for perfect synchronization between rolls, rotors and drums.
  • Tolerance — Plywood, veneer and other products require precision with no variation in thickness. Tight tolerances are the key to greater uniformity across your product line.
  • Roll Profile — Roundness prevents the most common roll defects, namely barring, feedlines and chatter. Even slight roll inconsistencies produce defects at high speeds.
  • Bearing Life Improvement — Regular inspection of both bearings and bearing seats will ensure concentricity to the roll face.

PRG’s service begins with a free consultation at your facility

Call today to speak to the experts at Precision Roll Grinding

If you have any of the following issues or questions about your refiner, give us a call.
The consultation is absolutely free.

  • How do I eliminate caliper variation in my veneer?
  • I need a matched set of drive rolls. Can PRG exactly match the diameters for pairs of drive rolls?
  • How do we extend the life of our rolls?
  • My rolls have recessed bearings that require fit corrections. Can PRG do this?
  • Who can assess premature bearing failure in a sander guide roll?

  • Vibrations in my mill’s rolls are causing issues with product quality. Can you help?
  • What is the best way to balance our rolls?
  • Can PRG reconfigure journals and upgrade bearings in my sander rolls?
  • How do we produce the best plywood or flakeboard panels possible?

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