A motor blower creates underpressure through an internal suction duct, removing drilling dust without external hoses or a separate blower.
An adjustable viscous gap around a spring-mounted ring damper lets machine tool spindles tune vibration damping across varying frequencies.
Torque feedback triggers automatic tap reversal, removing manual intervention and speeding thread cutting and withdrawal.
A hole saw uses a threaded drive screw to move an ejection plunger along the cutting axis during rotation.
A core retaining device prevents falling concrete cores by axially biasing them via a bearing that allows drill bit rotation.
An intake hole creates negative pressure to forcibly aspirate chips, eliminating toxic cutting fluid and preventing environmental contamination.