A sensor is connected to the spindle motor to determine the rotation rate of the spindle.

The spindle attachment device can transmit the rotational speed of the spindle to the tap tool after increasing the rotational speed to tap a work at high speeds while suppressing the rotational speed of the spindle.

By rotation of the spindle (2), the counterpart (4) is driven like the nut of a spindle drive.

As the spindle (5) rotates the regulator is rotated by an annular diaphragm (12).

A rotatably driven spindle (6) comprises slides (14, 64) arranged on its front face, which can be adjusted radially as the spindle (6) rotates.

A polishing spindle (57) is mounted on said polishing spindle mounting element for rotation about a spindle rotation axis.

The rotational axis of the support shaft (2) is disposed horizontally.

The element is pushed into the desired position by rotating the spindle.

Furthermore, the threaded spindle (7) or the spindle nut (80') is rotated with the aid of an angular gear mechanism (16).

The shaft extension (23) is linked in a non-rotatable manner with the threaded spindle (3).

The rotational axis of the revolving drum (5) is disposed horizontally in a vertical plane containing the rotational axis of the support shaft (2) beneath the support spindle (2).

The tread head is selectively engaged to the spindle for preventing rotation of the spindle and protraction of the seatbelt.

A brake (64) may also be connected between the spindle (22) and the delay timer (76) to prevent spindle rotation.

Through a transmission an electric motor causes the spindle to rotate at which the spindle nut and the inner tube will be moved in an outwards or inwards direction depending on the direction of rotation of the spindle.

Rotation of the connector pin effects the rotation of the spiral attachment mechanism into body tissue.