Multi Stud Tensioning (MST)

With Enerpac's Multi Stud Tensioning (MST) systems, each individual bolt in
a connection can be tensioned simultaneously. Applying predictable and accurate
preload to all bolts eliminates problems associated with traditional bolting methods.
Typical Enerpac Multi Stud Tensioning applications include:

Manhole, handhole and inspection covers: MST systems are the fastest and most accurate means of loosening and tightening of bolts on primary and secondary manholes, handholes and Inspection openings in nuclear facilities. Through the use of special Cylinder areas and strong lightweight materials reduce the MST systems Fastening time by up to 75%.

Coolant pump: With a tailor-made, slim pre-tensioning system for a nuclear reactor coolant pump
with six evenly arranged pre-tensioning tools and clamping bolts in four passes,
the screwing time was reduced by 25% and the clamping accuracy was significantly increased.

Assembly of rotor blades for wind turbines: Using an Enerpac MST system, wind turbine blade assembly times have been reduced by approximately 65%, while bolt loading accuracy and consistency have improved, resulting in longer connection life and less maintenance costs. The MST system, which consists of four tool segments, is capable of simultaneously tensioning up to 88 screws connecting a 125 ft long blade to a bearing rotating ring.