Mill: M80 bolts

Application

M80 bolt tightening on an electrical stretch coupling in a mill.

Problem

To fasten this bolt easily and safely. To prevent seizing associated with traditional tightening techniques.

Solution

Use SJ M80 Superbolt nuts.

Result

Easy and accurate tightening with a torque wrench to 185nm on the set screw instead of a conventional tightening requiring about 26800Nm. No more problems with seizing.