Hydraulic Bolt Tensioners
1500 Bar topside single-stage tensioners and compact multi-stage tensioners for wind turbine foundation and casing bolting.
HST-S Series Single-Stage Topside Bolt Tensioners
High-precision 1500 Bar (150 MPa) single-stage topside hydraulic bolt tensioners delivering 282 to 3216 kN pure axial pre-tension. Engineered with interchangeable threaded pullers, twin quick-connect daisy-chain couplers, and dual-window support bridges for M24 to M100 critical flange closures.
HST-M Series Multi-Stage Compact Bolt Tensioners
Ultra-high-pressure 1500 Bar (150 MPa) multi-stage compact hydraulic bolt tensioners engineered for narrow radial clearance bolting. Features coaxial stacked double-cylinder architecture delivering massive pre-tensioning force for wind turbine foundation bolts, nuclear vessels, and confined flange rings.
Hydraulic Bolt Tensioners — Series Overview
2 series in this category. Ratings below are taken from each product page; open a series for the full specification table.
- HST-S Series Single-Stage Topside Bolt TensionersHYDRAULIC STROKE: 8 mm to 12 mm Axial Extension · PRESSURE: 1500 BAR HYDRAULIC TOPSIDE TENSIONINGRef. Enerpac GT1-GT4
- HST-M Series Multi-Stage Compact Bolt TensionersPRESSURE: 1500 BAR HYDRAULIC TOPSIDE TENSIONING · DRIVE MECHANISM: 80° Hexagon Drive Window with Tommy Bar Engagement
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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