What Are Bore Gages And What Makes Sunnen's Gages Superior?

Bore gages are specialized tools used to measure the precise diameter of a machined bore in workpieces such as engine blocks, hydraulic cylinders and gun barrels. Sunnen offers two distinctly different types of bore gaging systems--Sunnen PG Series Precision Bore Gages and Sunnen Dial Bore Gages, which cover nearly every bore size and configuration. Unlike most other gages, Sunnen’s PG and Dial Bore models are rugged, accurate and designed for shop floor use with Sunnen or other bore sizing machines, and in QC or metrology settings.

The Sunnen PG Bore Gaging System is a unique mechanical gaging system that makes bore I.D. gaging simple, reliable, and economical. When a PG gage is teamed with a Sunnen PG Series Setting Fixture it eliminates buying and maintaining costly master rings, plug gages or air gage probes. Both gage and setting fixture are built for everyday use making them ideal for “in-process” inspection. Available in 0.001 mm or 0.0025 mm (.00005" or .0001") reading scales. Sunnen's PG bore gaging equipment can also be leased through KS&C Industries, LLP.

With Sunnen’s Dial Bore Gaging System the dial bore gage and setting fixture work together to make bore gaging faster and easier than ever without ring gages, micrometers or jo blocks. The dial bore gages feature all-carbide gaging points, wear-proof ball crank, and adjustable centralizers. Available in a wide variety of models and ranges for use with virtually all Sunnen or other honing machines.

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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