Abstract: In a method for securing a high voltage on-board electric grid of a motor vehicle for repair and/or maintenance of the motor vehicle, the energy inflow of an energy supply unit into the onboard electric grid is blocked during or after a voltage disconnection of the high-voltage on-board electric grid, in which an energy inflow of the energy supply unit to the high-voltage on-board electric grid is interrupted. Additionally or alternatively, the energy inflow of at least one other energy supply device is blocked, wherein the at least one other energy inflow is designed in order to supply energy from a further energy source to the high-voltage on-board electric grid.

Abstract: In a method for securing a high voltage on-board electric grid of a motor vehicle for repair and/or maintenance of the motor vehicle, the energy inflow of an energy supply unit into the onboard electric grid is blocked during or after a voltage disconnection of the high-voltage on-board electric grid, in which an energy inflow of the energy supply unit to the high-voltage on-board electric grid is interrupted. Additionally or alternatively, the energy inflow of at least one other energy supply device is blocked, wherein the at least one other energy inflow is designed in order to supply energy from a further energy source to the high-voltage on-board electric grid.

Abstract: In a support for a machine tool spindle (1) adapted for use with a cooling device there are provided feed and discharge channels (12, 13) for a fluidic cooling system in the spindle (1). These channels are connected to cooling grooves (14), which at least in the region of the inner bearing rings (2a) are arranged on the spindle head (1a), are worked into the spindle outer surface (1b) extending in a peripheral direction or helically and are open toward the inner bearing rings (2a).

Abstract: A worm and worm-rack combination with hydrostatic lubrication therebetween. The teeth of the worm and the worm-rack have a trapezoidal cross-section and lubricating oil is supplied through openings in the toothed flanks. The half angle formed between each of the toothed flanks and the line of action to the axis of the worm is limited solely to the range of 6 to 10 degrees and the lead angle is in the range of 2 to 10 degrees.