500570 - Hobart Stickmate 160i Dual-Voltage DC Inverter Stick Welder

Technical Overview of the Hobart Stickmate 160i

The Hobart Stickmate 160i (SKU: 500570) represents a significant evolution in the stick welding category, transitioning from traditional heavy transformer-based designs to efficient, lightweight inverter technology. This DC stick welder is engineered to provide industrial-level performance in a compact form factor, making it an ideal solution for maintenance, repair, and operations (MRO) professionals who require portability without sacrificing arc quality. The unit operates on single-phase power and features Hobart's MVP™ (Multi-Voltage Plug) system, which allows users to seamlessly switch between 120V and 240V input power sources without the need for additional tools or rewiring.

At the core of the Stickmate 160i is its DC inverter power source, which delivers a stable and smooth arc characteristic that is superior to AC-only machines. DC output is critical for running a wide variety of electrodes, including E6010, E6011, E6013, and E7018, providing better penetration and bead appearance. The machine offers an amperage range of 20 to 160 amps, with infinite amperage control. This precision allows operators to fine-tune the heat input for different material thicknesses, from thin gauge steel up to 3/8-inch plate. The high open-circuit voltage assists in maintaining arc stability, even with difficult-to-run electrodes.

One of the standout technical features is the Hot Start™ technology. This function automatically increases the output amperage at the start of the weld to prevent the electrode from sticking to the workpiece and to ensure a clean, consistent tie-in. This is particularly beneficial for less experienced welders or when working with damp electrodes. Thermal overload protection is integrated into the circuitry to protect the internal components from overheating during extended use, ensuring longevity and reliability in demanding environments. The unit's duty cycle is rated at 30% at 160 amps, which is competitive for its class and sufficient for most general fabrication tasks.

Physically, the machine is designed for the field. Weighing under 20 pounds, it is significantly lighter than its transformer predecessors, which often exceeded 50 pounds. The rugged case design protects internal components from impact and debris, while the included shoulder strap enhances mobility. The interface is user-friendly, featuring a large dial for amperage adjustment and clear indicators for power and thermal status. For MRO applications where power availability varies and mobility is key, the Stickmate 160i offers a robust and adaptable welding solution.