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The large-diameter 318 series is a tooling system designed for twin cutter rough boring, precision finish boring and precision OD turning operations for the diameter range of 7.87" to 24.41". The system supports spindle speeds as high as 6,600 sfm using an assembly of lightweight aluminum components. These components are coated for wear and corrosion resistance. Provisions for high pressure coolant through the tool are included and sealed for all diameters and lengths.
The Mega ER Grip by BIG Daishowa is a high-precision collet and toolholder system featuring runout accuracy of 0.00012" (3 microns) at 5 × D. The system features ERC collets in accordance with DIN6499 and ISO15488 standards to ensure runout accuracy, the company says. An increased collet/body contact area improves rigidity and clamping force. The Mega ER Grip system is available with BIG-PLUS (CAT), HSK, and Capto interfaces.