Abstract: The present invention provides a universal balance machine which can be utilized as a hard or soft balancing machine. Since the stiffness of the machine suspension is easy and readily changed, hard and soft balancing may be done on the same machine.

Abstract: Apparatus for performing work on workpieces, such as automotive drive shafts, comprising a work station having a longitudinally adjustable headstock at one end and a longitudinally adjustable tailstock at the other end. A balancing machine having an off-balance indicator is provided on the work station between the headstock and tailstock for selectively holding a workpiece in a first fixed stationary position for performing work operations thereon and for releasing the workpiece to allow it to oscillate so as to carry out balancing operations thereon.

Abstract: A device for retaining a workpiece in either a stationary or movable position for use in a machine which incorporates an off-balance indicator such as a strobe light and which is used to remove imbalance. The device selectively holds the tool in a first fixed stationary position for performing work operations thereon or releases the tool to allow it to oscillate so as to enable balancing operations to be carried out.