Duo Multi-Stage Tensioners

duo series multi-stage tensioners are versatile and reliable hydraulic bolt tensioners suitable for high load and tight space applications. Optimised for use on wind turbines they have been designed for long-life, lowmaintenance use, and are suitable for use on single bolts, or grouped together for multiple tightening of bolted joints. duo tensioners are extensively used for slewing rings, power-gen applications, structural and all critical bolting.