BT tool holder BT series

BT 40steep taperfor machining

The spindle interface JIS B 6339-2 as the traditional interface for milling spindles distinguishes itself through it robust design. Its field of application ranges from fine machining to heavy duty roughing. The tool holder is pulled in the milling spindle with the help of an additional pull stud. The centering takes place via the taper contact. Therefore, the JIS B 6339-2 interface is primarily suitable for applications with a spindle speed of up to 12,000 rpm.