Application :
For clamping tools with side flats to DIN 1835 B and DIN 6535 HB.

Version :
All shanks hard turned (for smooth running!).

Optional extras :
Pull studs (PS) No. 308760 − 308806. Pull stud wrenches No. 308820; 308835.

Advantage :
The double contact between the taper and the flat flange creates a more stable and precise clamping situation:Better surface qualityLonger tool life timesConsistent seating in the headstock (even at high speeds)Smaller radial run-outA BT double contact arbor can also be used in a standard BT machine spindle – and vice versa. The advantages of the double contact are however achieved only when a double contact arbor and double contact spindle are used together.