| 摘要 |
A tool bit chuck for a bit (1) having axially extending latching grooves (2) closed at the opposite ends spaced apart in the axial direction, and axially extending rotary entrainment grooves (3) open at the trailing end of the bit. The chuck has entrainment elements (8) and radially displaceable latching elements (8). The latching elements (4) provide axially directed retention of the bit (1), while the entrainment elements (8) transmit torque to the bit (1). The entrainment elements are shaped as roll bodies, such as cylinders, to prevent wear caused by friction.
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