Hydraulic Tensioning
Bolt Tensioners
Hydraulic bolt tensioning systems for controlled preload, critical joints, and simultaneous multi-bolt tensioning applications.
Product Families
Hydraulic tensioning systems
Spring Return Hydraulic Bolt Tensioners
Hydraulic bolt tensioners with spring return for controlled preload and repeatable industrial tensioning applications.
Load Return Hydraulic Bolt Tensioners
Hydraulic tensioners designed for high-load bolting applications with controlled return under load.
Multistage Hydraulic Bolt Tensioners
Multistage tensioning systems designed to generate high bolt load where radial or dimensional clearance is limited.
Contact ToughTorq for available models and sizing.
Request Information →Controlled Preload
Apply load directly to the bolt
Hydraulic tensioners stretch the bolt axially using hydraulic pressure. The nut can then be positioned while the bolt is under load, allowing controlled preload without relying only on applied rotational torque.
Controlled bolt preload
Reduced reliance on torque-friction relationships
Suitable for simultaneous multi-bolt tensioning
Repeatable loading for critical joints
Available for large industrial fasteners
Compatible with ultra-high-pressure hydraulic systems
Complete System
Bolt tensioning system components
Bolt Tensioner
Ultra-High-Pressure Pump
Ultra-High-Pressure Hose
Quick Couplers
Pressure Gauge
Hydraulic Fittings
Bridge / Nut Rotator
Application Accessories
Applications
Critical bolted joints
Flange joints
Power generation
Wind turbine bolting
Oil & gas equipment
Pressure vessels
Heavy structural connections
Large rotating equipment
Shutdown and turnaround work
Tool Selection
Size the tensioner to the joint
Tensioner selection depends on bolt diameter, thread pitch, required preload, available stud projection, radial clearance, working pressure, and joint geometry.
Bolt Diameter
Thread Pitch
Required Bolt Load
Stud Projection
Radial Clearance
Working Pressure
Nut Size
Joint Configuration
Related Equipment
Complete the tensioning system
Technical Resources
Bolt Tensioner Downloads
Spring Return Tensioner Cutsheet
Download coming soon
Load Return Tensioner Cutsheet
Download coming soon
Multistage Tensioner Cutsheet
Download coming soon
Bolt Tensioner Selection Guide
Download coming soon
Application Support
Need help sizing a tensioner?
Send the bolt diameter, thread pitch, required preload, stud projection, available clearance, and application information.