Pressure compensating-type torque control overrides the speed control to maintain maximum torque. Speed control is continuously variable over the entire operating range. The Logan 85-Ton Power swivel uses either a closed or open loop hydraulic system with variable displacement, reversible over center pumps, and air or electric remote controls. Stops and start-ups are thereby reduced improving rig efficiency and reducing wear on the pump, drawworks, and other rig equipment. The Power Swivel facilitates drilling with longer drill string lengths before the rig must be shut down to add pipe. For most applications, the Logan 85-Ton Power Swivel eliminates the use of dangerous spinning chains, tongs, and kelly spinners. The design incorporates a reliable, custom drive train with hardened steel gears. The compact, swivel-head design weighs only 1,163 lbs and fits into most drilling or workover masts. It is rated to support tensile pipe loads of 85 tons at zero rpm and 45 tons of dynamic load at 100 rpm. Logan 85-Ton Power SwivelOVERVIEW The newly engineered, hydraulic motor-driven, Logan 85-Ton Power Swivel provides smooth, shock-free torque. 26 Assembly and Replacement Parts Lists Floating Washpipe. 25 Torque Controller (for Air and Electric Controls). 21 Gooseneck Trailer-Mounted Power Unit.23 Skid-Mounted Power Unit. 20 Drawings and Schematics Floating Washpipe Assembly. 7 Replacing the Floating Washpipe Assembly and Packing.7 8 Power Unit Maintenance.

Logan 100 ton swivel head