Description

HHN-L series mechanical lock-ring hydraulic nuts, operating at 1500 bar. They are designed for tensioning large-diameter bolts, with a thread range from M27 to M125. These nuts are presented as equivalent to Enerpac HHL models. They allow a pure axial bolt elongation of 4 kN, eliminating thread galling and friction, while integrated knurled lock rings permanently preserve bolt pre-tension on critical flanges. They belong to the bolt tensioners and hydraulic nuts category. The product is manufactured by HydraStark, the direct factory brand of Hangzhou HydraStark Hydraulic Machinery Co., Ltd. No packaging information is provided.