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The Efficient Solution for Exact Finishes

All Sunnen products come with the best technical and customer support in the industry.

Sunnen has the highest quality mandrels for:

  • Open holes with no interruptions
  • Open holes with keyways or splines
  • Open holes with tandem lands
  • Blind holes
  • Bowed holes
  • Holes with a counterbore or overhang

Machines that Work Harder. Accessories that Last Longer.

Our reputation is built on quality and durability. You’ll find Sunnen machines from the 1940s that are still running strong to this day. Over the years, we’ve applied our expertise with emerging technologies to develop the industry’s largest catalog of bore finishing machines. We also offer all the tools, accessories and training necessary to sustain a high-performance operation.

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Solutions as Unique as Your Operation

See how our team designs, builds and implements custom machinery to solve our customers’ complex needs.

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