Turbine Wheel To Shaft
1600 MW (4 x 400 MW) pumped storage plant. 5 1/2" diameter studs.
30 MW unit with 3 1/4" diameter studs.
Problem: Bolting of the turbine wheel to the drive shaft often requires overhead tightening. This often involves manipulation of a heavy hydraulic wrench in a confined area. Typical of large diameter fasteners, galling and seizure can occur.
Solution: Overhead work is simplified with the low torque requirement of Superbolt Tensioners. Torques are usually below 150 ft-lbs. The tensioners are made from stainless steel to resist corrosion. Galling and seizure is eliminated. |