Skip to main content
Tensioning Hardware

Hydraulic Tensioned Bolt

Integrates a hydraulic nut into the bolt head — eliminates inaccuracies caused by conventional bolt torquing methods with fewer components to handle.

Hydraulic Tensioned Bolt

Product Overview

The Hydraulic Tensioned Bolt eliminates conventional bolt load torquing inaccuracies that can occur from stud twist and frictional losses at the nut face and thread interfaces. The tensioned bolt integrates a hydraulic nut into the head of the bolt resulting in fewer components to handle. It eliminates the torquing friction, thereby improving the integrity of the joint.

The compact standard sizes of our Hydraulic Tensioned Bolt are ideal for confined spaces or where envelope restrictions prevail. Whether you tension one bolt or many bolts at a time, the Hydraulic Tensioned Bolt produces uniform compression of casings, flanges, bearing housings or connection rods.

Any number of our tensioned bolts can be connected together and loaded simultaneously. This multi-bolt tensioner serves to appreciably shorten assembly or maintenance time. In addition, the tensioned bolt allows for a minimal number of operators — altogether, this provides for quick and easy installation which relates to cost savings.

Key Features

  • Unique Metal-to-Metal Seal Design
  • Tolerant to Harsh Environments
  • Applications up to 500°F and Higher
  • Water Charged for Special Applications
  • Multi-bolt Tensioning — Simultaneous 'Daisy Chaining'
  • Integrated Hydraulic Nut in Bolt Head
  • Fewer Components to Handle vs. Separate Nut
  • Forces Act Along Bolt Axis — No Torque Reaction Arms

Applications

Turbine Casings
Flanges
Bearing Housings
Connection Rods
Confined Space Bolting
High Temperature Applications
Pressure Vessel Assembly
Any Application Replacing Conventional Torqued Bolts

Technical Specifications

DesignIntegrated hydraulic nut in bolt head
Seal DesignMetal-to-Metal
Max TemperatureUp to 500°F and higher
Special MediumWater charged available
Multi-Bolt OperationSimultaneous daisy-chaining
Force DirectionPure axial — no torque reaction
Standard SizesCompact range — contact for sizing

Ready to Order or Need Help Specifying?

Our engineers are available to assist with product selection, sizing, and custom configurations.