Large Diameter Rough Boring

Series 318

Boring Range 7.87" to 118"


The 318 boring system is designed for heavy roughing of bores from 7.87" to 24.41" - and a special adapter can extend the system up to 118". The lightweight and secure configuration makes it ideally suited for higher speed operations-up to 6600 SFM! For use on production machines such as boring mills and machining centers with spindle taper sizes of 40 and larger.

The 318 roughing system consists of a small number of modular components, including a steel flange, aluminum extension slides and clamping bases, and steel insert holders. Most components are universally utilized with the specific bore diameter being dependent only on the selection of the appropriate slide. Each extension slide has an adjustment range of over 2.75" in diameter.

Large Diameter Rough Boring
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Series 318 for Rough Boring


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This super light system provides highest precision and performance, and features through-tool coolant supply to the cutting edge. The mounting components are "pinned to fit" onto specific locations on the slides, and secured with steel bolts. The precise positioning of the components on the slide along with incremental adjustment scales for insert holders permit diameter and length setting without a tool presetter.

The 318 system utilizes the new KAISER CKN modular connection.