The Rotary Table is used to turn the drilling pipe and therefore turn the drilling bit on the end of the pipe.
The 37 1/2" MPCH is a Pin Drive Hinged Master Bushing specially designed for floating and semi-submersible drilling operations.
With insert bowl No. 3 and optional insert bowls No. 1 a...
center to sproket: 53-1/4
Gear ratio 3.14
Bushing for oilwell table 37.5"
Make/Type: National C495
Maximum opening: 49-1/2 inch
Rated capacity: 580 lt
Static load capacity: 711 lt
Rotating load capacity: 268 lt @250 rpm