Hydraulic Nuts & Self-Lock Nuts
1500 Bar standard hydraulic nuts and mechanical collar self-locking hydraulic nuts for permanent pre-load retention.
HHN-L Series Mechanical Lock-Ring Hydraulic Nuts
Ultra-high pressure 1500 Bar (150 MPa) mechanical lock-ring hydraulic nuts delivering 226 to 3864 kN pure axial bolt elongation. Eliminates thread galling and friction while integral knurled lock rings permanently preserve bolt pre-tension across M27 to M125 critical flanges.
HHN-M Series Heavy Industrial Mounting Nuts
The HHN-M Series 70-80 MPa hydraulic mounting nuts provide smooth, non-impact mounting and dismounting of bearings, flywheels, and marine propellers across M50 to Tr900. Operating at 700-800 Bar with up to 25 mm axial stroke, high hydraulic thrust pushes workpieces to exact position without damaging shafts or precision mating surfaces.
Hydraulic Nuts & Self-Lock Nuts — Series Overview
2 series in this category. Ratings below are taken from each product page; open a series for the full specification table.
- HHN-L Series Mechanical Lock-Ring Hydraulic NutsPRELOAD CAPACITY: 226 to 3864 kN · AXIAL STROKE: 6 to 20 mm Pure Axial Hydraulic Extension
- HHN-M Series Heavy Industrial Mounting NutsAXIAL HYDRAULIC STROKE: 5 mm to 25 mm Axial Travel · PRESSURE: 70-80 MPa
Enerpac®, SPX Flow®, Power Team®, Simplex®, Hytorc®, Holmatro® and other brand names are registered trademarks of their respective owners. HydraStark is an independent manufacturer and is not affiliated with, authorized or endorsed by these companies. OEM model numbers are listed for dimensional and specification reference only; please verify fit with our engineers before ordering.
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