Erickson™ BT V-Flange Shank Tooling System • BT30 Series Erickson V-Flange BT Taper Tooling is manufactured from premium materials and meets or exceeds the latest JIS B 6339 specification and ISO-1947 taper accuracy of AT3 specification standards. The BT30 tools are either prebalanced to a high specification or balanced-by-design and will perform effectively up to 18,000 RPM. For any applications higher than 18,000 RPM, WIDIA™ recommends that the complete toolholder assembly (toolholder, retention knobs, collets, hardware, and cutting tools) be balanced as one identity. BT30 • JIS B 6339 7/24 taper. • Standard M12 metric drawbar thread. • Taper accuracy of AT3 specification or better. • Maximum 18,000 RPM. • Maximum 100 bar (1,500 psi) coolant pressure. 2 drive slots @ 180º opposed. • Equal width. • Equal depth. • Contained within V-flange. Wide flange with V-groove for tool changer arm. Metric thread for retention knob with pilot counterbore. Back face ground for accurate location of retention knob. BT — JIS B6339 Shank NOTE: Inherent balance conditions — all features are symmetrical. D2 WWW.WIDIA.COM