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The Hypertherm 129699 is a lead screw sub-assembly (SBA) designed for the 128606 2-R Torch Lifter. It serves as the primary linear actuator within automated Torch Height Control (THC) systems, converting rotational motor energy into vertical positioning for mechanized plasma cutting torches.
Features
Anti-Backlash Precision: Pre-loaded internal nut system eliminates mechanical play during directional reversals for arc voltage tracking
High-Helix Acceleration: Optimized thread pitch for rapid vertical withdrawal during Initial Height Sensing (IHS) and crash detection
Dry-Running Operation: Composite plastic nut eliminates the need for liquid lubricants that attract abrasive metallic dust
Dual-Speed Consistency: Handles micro-feeding adjustments during cutting and high-velocity travel for rapid positioning
Corrosion Resistance: Stainless steel construction shields against moisture from water-table plasma beds
Thermal Rigidity: Maintains pitch accuracy under ambient heat from the plasma arc
