Top Hat

A steel can with a faceplate bolted to a reception shaft wall to receive the arriving MTBM.

Torque

The rotary force available at the drive chuck.

Torque Limiter

A rotary slip clutch used to protect the final drive.

Track

A set of longitudinal rails mounted on cross members that support and guide a boring machine.

Track Brake

A mechanical device to provide a limited resistance to movement between the machine and the track.