Hydraulic Lock Nut 30LH The Clamping Principal: The actuation of the pressure screws or the addition of the hydraulic medium activates the self-contained hydraulic system with the pressure transformation. The amount of acting clamping pressure can be identified and monitored via an integrated pressure indicator. Hydraulic Retract: Our hydraulic lock nuts are also available with hydraulic retract. Constructions with hydraulic retract reset the hydraulic pressure automatically to the zero/starting position as soon as the pressure breaks down. Feature Double anti leak Protection Rechargeable Clamping up to 70 K/N Purely axial clamping force - part remains in its preset position Defined and repeatable clamping force -clamping remains the same from operator to operator Much higher clamping force when needed - advantage for holding large work pieces Floating clamping face - compensates for face run out of spacers and provides full face contact During clamping procedure no radial forces are introduced - does not induce run out to cutter or workpiece No hammers used on precision arbors and/or spindles - protects against damage to precision machine components Elimination of cheater bars for large work piece clamping - reduced risk of operator injury and potential of workmans compensation claims Alignment rings available to true both ends of cutter - ability to have cutter run true over its length Libheral Eaton Mitsubishi hobbing Raisauer Pfauter