Believe it or not, bolts are supposed to stretch. Not much of course! It’s the slight stretching of a properly tightened bolt which provides the ‘clamping force’ or tension that holds the bolted parts together. For a bolt to do its job, the clamping force must exceed the opposing force that is trying to pull the parts away from each other.
“Accurate bolt tensioning is essential for optimal performance of your equipment.”
Too little torque may cause the bolt to become loose. Too much torque, and the bolt may strip its threads or break. Incorrect tensioning of a bolt increases the potential for the bolt to fail, risking damage to both the mill linings and the shell itself. Bolt failures result in unplanned down time, therefore correct bolt tensioning is essential..
Relines South Africa has invested in an extensive range of modern torque tooling equipment and training for our employees. This allows us to provide thorough bolt tensioning services to our clients as a part of the reline works package. For optimal reliability, our torque units are regularly serviced and are calibrated in accordance with the manufacturer’s specifications.