11/4/2015 | 1 MINUTE READ

BIG Kaiser Expands Small Diameter Rough Boring Offering

Originally titled 'Company Expands Small Diameter Rough Boring Offering'
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Built with a 20-mm diameter straight shank, the product performs best when paired with a milling chuck at fixed bore depths of as much as 4× diameter.

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BIG Kaiser Precision Tooling Inc.’s small-diameter indexable rough boring head, the MW boring head, permits small-hole rough boring in a range of 16 mm to 21 mm (630” to 0.827”) diameter and is especially useful for semi-finish boring operations of workpieces with die cast holes.

Unlike other boring tools from BIG Kaiser, the MW does not feature the modular Kaiser KA/KAB connection. Built with a 20-mm diameter straight shank, the product performs best when paired with a milling chuck at fixed bore depths of as much as 4× diameter.

Efficient chip evacuation was a major consideration in the tool design. A spiral groove carved in to the body facilitates clean and quick chip removal with the help of coolant holes near the end of the groove. However, for blind-hole situations, an additional center-through coolant option was added to aid in chip evacuation for this tricky scenario. Stop screws make choosing coolant preferences fast and easy, the company says.           

The two opposing die-steel insert holders feature a precision serrated mounting system, providing a secure and rigid connection similar to the Kaiser 319 SW series. The insert holders are conveniently marked with a scale for coarse setting, and the radial adjustment screw allows for fine-tuning, thanks to its 0.008” pitch. Coated inserts are available for common materials such as steels (including stainless), ferrous materials such as ductile and cast iron, as well as nonferrous materials such as aluminum.

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