The Block Nut is a compact, self-contained device requiring only a remote oil pumping system, with a reservoir and pump, to activate or de-activate the pressure chamber at a predetermined pressure. Deactivation is accomplished by increasing the input pressure until the lock ring is freed up, allowing the ring to be unscrewed before pressure is released.
Oil pressure can be applied through Amtec GX-Nipple and GX-Coupler arrangements, for quick disconnect under pressure, or through hard piping from a remote header.
The above cross-sectional drawing shows the left side in a depressurized state while the right side is in a pressurized condition. The right side also shows the lock ring in the tightened position, against the thrust collar, to hold the tie rod in a pre-tensioned state.
To engineer an Amtec Block Nut we require complete dimensional drawings of tie rods, mill frames or housings, either exact clamping forces or separating forces, and type of hydraulic pumping system on-site or required to be supplied by Amtec.