Tungaloy's Mini Boring Bar Tools Machine Small Parts
The TinyMiniTurn line features a full range of solid carbide mini boring bars that enables machining from as small as 0.6 mm (.024″) diameters.
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Hwacheon Machinery America, Inc.
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Tungaloy’s TinyMiniTurn mini boring bar tool line for small bore applications now offers cubic boron nitride-tipped (CBN) boring bars for machining hardened steel parts.
TinyMiniTurn offers a wide range of geometry types and grades for small-diameter boring applications. The line features a full range of solid carbide mini boring bars that enables machining from as small as 0.6 mm (.024″) diameters, as well as indexable boring tools that use a tiny insert in the inscribed circle of 3.57 mm (9/64″) or 3.97 mm (5/32″).
New CBN-tipped mini boring bars feature a BX310 uncoated CBN grade that increases the grade’s wear resistance when used at low to medium cutting speeds, making it able to machine small bores from as small as 2.8 millimeter (.110″) diameter of hardened steel parts.
The JBT-style cutting edge geometry of the new bars incorporates a 98-degree point angle that enables the single geometry to be used in multiple applications, including boring, profiling and chamfering. Furthermore, the boring bars feature an edge preparation of 0.13 mm (.005″) × 15-degree chamfer, providing the cutting edge with edge-line security and robustness.
The new CBN boring bars are equipped with internal coolant channels for through-coolant capability, directing the coolant jet in the optimal position to the cutting point for increased tool life and chip control.
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