The double acting Amtec Hydraclamp Step Nut provides a custom-designed pressure chamber to exceed any pre-tensioning requirement, as well as a low pressure retraction chamber for easy reset. Amtec GX-Nipple and Coupler arrangement or hard piping connections with oil pumping systems can be designed to meet specific operating requirements for pressurizing, depressurizing and monitoring oil pressures. A dual acting oil pumping system is required to operate the Series 026 double acting Amtec Step Nut.
The below cross-sectional drawing shows the left side in a depressurized state while the right side is in a pressurized state. Pumping low pressure oil into the retraction chamber will return the thrust collar to the home position as shown on the left side of the drawing.