SK Series Double-layer spring retractable bolt stretcher
Multi-stage, Spring return, Hydraulic Bolt Tensioner
Capacity：200-2880 kN
Bolt Range:M20-M72
3/4"-3"
Maximum Operating Pressure:1800 bar
● SK-series single stage for 109
● Automatic piston retum: returm of the piston into end position after pre-tensioning.
● Safety fracture device: In case of wrong use or failure the safety fracture device keepsuncontrolled energy inside the tool- the safety for the staff increases significanty.
● Nickel coating which prevents a corrosion of the components.
● Design for using not occupy space and easily handle design.
● Quick-Release the stud's nut is wound down against the joint face.
