Abstract: Disclosed is a turbine for a machine for projecting abrasive for the surface treatment of objects. The turbine includes a first flange and a second flange, at least one blade element provided with a guide surface for receiving, guiding and projecting the abrasive, and a mounting system for releasable mounting of the blade element on the flanges. The mounting system includes a support element arranged between the blade element and the flanges and configured for a releasable mounting on the flanges and for supporting the blade element.

Abstract: A method for positioning a substage, supported by a main stage, relative to a reference object, the substage moveable in a direction between a first and second position relative to the main stage. The method includes positioning the first stage using a passive force system that is activated by positioning the main stage. The passive force system includes two magnet systems, each magnet system being configured to apply a force in the direction to the first stage with respect to the second stage in a non-contact manner, the forces resulting in a resultant force applied to the first stage in the direction by the passive force system. A magnitude and/or a direction of the resultant force depends on the position of the first stage relative to the second stage, and the first stage has a zero-force position between the first and second position in which the resultant force is zero.

Abstract: Disclosed is a turbine for a machine for projecting abrasive for the surface treatment of objects. The turbine includes a first flange and a second flange, at least one blade element provided with a guide surface for receiving, guiding and projecting the abrasive, and a mounting system for releasable mounting of the blade element on the flanges. The mounting system includes a support element arranged between the blade element and the flanges and configured for a releasable mounting on the flanges and for supporting the blade element.

Abstract: A method for positioning a substage, supported by a main stage, relative to a reference object, the substage moveable in a direction between a first and second position relative to the main stage. The method includes positioning the first stage using a passive force system that is activated by positioning the main stage. The passive force system includes two magnet systems, each magnet system being configured to apply a force in the direction to the first stage with respect to the second stage in a non-contact manner, the forces resulting in a resultant force applied to the first stage in the direction by the passive force system. A magnitude and/or a direction of the resultant force depends on the position of the first stage relative to the second stage, and the first stage has a zero-force position between the first and second position in which the resultant force is zero.