Multi-stage tensioners are versatile and reliable hydraulic bolt tensioners suitable for high load and tight space applications.


Optimized for use on wind turbines they have been designed for long-life, low maintenance use, and are suitable for use on single bolts, or grouped together for multiple tightening of bolted joints. These tensioners are extensively used for slewing rings, power-gen applications, structural and all critical bolting.

Safe and Reliable

  • CE marked
  • Over-stroke protection
  • Max stroke indicator
  • Pressure Test Certification
  • Full color operating and safety manual

Latest Technology

  • Latest seal technology
  • High cycle life
  • Optimized load to weight ratio
  • Integrated system with TENSIONPRO pumps and hoses

Options and Features

  • Special threads
  • Special load requirements
  • Twin or single port
  • Protective handle
  • Special bridge for tight clearance
  • Swivel connections
  • Cycle counter
  • Gear drive nut run-down
  • Spring piston return
  • Misalignment compensation
  • Special anti-corrosion, anti-wear surface finish