Rotary Head Specifications

Type: Two Stage Spur Gear
Speed Range: Variable, 0 to 160 RPM
Maximum Torque:

19,000 ft/lb (25,760 Nm) @ 95 RPM - 100% Efficiency

10,500 ft/lb (14,236 Nm) @ 170 RPM - 100% Efficiency

Number of Motors: Two 14 in³/rev. Variable displacement axial piston motors with 14.8: 1 reduction; 6 in (152.4mm) main gear face width.
Head Guides: Replaceable “Nylatron” material (moly-disulfide) @ 64 in. (1625.6mm) contact length each side
Rotary Head Weight: 6283 lb (2850 kg)
Function: Rotate the drill string