Lead Project Engineer Wind Energy at Wanzek Construction Inc.
The margin for error is a lot less because the tools can be locked on a specific torque value. On a Hytorc you have to try and get as close to the pressure as you can, it’s not exact. Also there is a data log which lets you know how many bolts were torqued. Also if there were any failed torques, or over torques. If I were to guess I would say it takes 33% of the time out of torquing.
On the E-RAD 2000’s they have the torque and angle function. Basically that makes it easy on GE rotors so when you stab blades you can do the 2 flats with the E-RAD, you can set the gun to 120 degrees and go to town.