• Albert Schrem Werkzeugfabrik GmbH

Hydraulic Lock Nuts

Albert Schrem offers Hydraulic Lock Nuts. These are mainly used with machine tools, wood working machines and the food industry. These are manufactured from steel, stainless steel, and aluminium with the application-specific respective sealing and hydraulic medium. Besides pressure-screw activated hydraulic lock nuts, also lock nuts, where the hydraulic is activated via grease nipple/grease gun, hydraulic aggregate or machine hydraulic with pressure pin. Even the extent of the stroke at the ring piston can be adapted according to the requirements. The actuation of the pressure screws or the addition of the hydraulic medium activates the self-contained hydraulic system with the pressure transformation. This induces at the mostly annular hydraulic piston a force clamping the parts to be clamped on an arbor in a purely axial direction against a positive stop. The amount of the acting clamping pressure can be identified and monitored via an integrated pressure indicator. Advantages: purely axial clamping pressure; defined clamping pressure; if needed, much higher clamping pressure; floating clamping surface; and the part remains in the predefined position; during the clamping procedure no radial forces. These hydraulic lock nuts are also available with hydraulic retract. Constructions with hydraulic retract reset the hydraulic automatically to the zero/starting position as soon as the internal hydraulic pressure breaks down.