Vertical Bore VBX

Category: Boring, Milling / Boring, Vertical Boring

The Winona Van Norman VB Series Vertical Boring Machines represent the ultimate in efficient, high-precision engine block machining. Designed for professional automotive, diesel, industrial, and performance engine rebuilding, the VB Series combines industrial-grade construction with advanced engineering to deliver exceptional accuracy, productivity, and reliability. Every machine is built to produce precise, repeatable cylinder bores while minimizing setup time and maximizing shop efficiency.

At the core of every VB Series machine is a rigid stationary boring head paired with a precision movable worktable. Because the boring head remains fixed during machining, the machine achieves superior rigidity and exceptional bore accuracy compared to conventional boring bar systems. Universal holding fixtures and a highly functional table design allow operators to quickly position engine blocks, while side-to-side and fore-and-aft table travel make it easy to center each cylinder—even when the block is not mounted perfectly square. An integrated dial indicator further streamlines setup by confirming precise cylinder alignment before machining begins.

The VB Series is engineered for maximum versatility and machining control. Adjustable spindle speeds and feed rates allow operators to optimize cutting performance, extend tool life, and produce superior surface finishes across a wide range of engine blocks and materials. These capabilities make the machines especially effective for large overbores, allowing aggressive roughing cuts that minimize the need for secondary finishing passes. A micrometric manual feed provides accurate depth control for counterboring cylinder sleeves, while adjustable automatic boring stops improve consistency and free operators to perform other tasks during the machining cycle. Depending on the model, automatic or rapid boring head retraction further enhances productivity and workflow efficiency.

Built to withstand years of demanding shop use, the Winona Van Norman VB Series delivers the precision, durability, and operator-friendly performance professional machine shops rely on every day. Whether machining standard automotive blocks or large diesel engines, the VB Series provides the accuracy, efficiency, and repeatability required to meet the highest standards of modern engine rebuilding.

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