K5004-1 - Lincoln Flex Feed 84 Digital Wire Feeder Control Box

Advanced Control for Heavy Fabrication

The Lincoln Electric Flex Feed® 84 Control Box (K5004-1) represents the pinnacle of rugged reliability and advanced process control in the industrial welding sector. Designed specifically to withstand the rigors of heavy fabrication and structural steel environments, this control unit is the brain behind the Flex Feed 84 system. It is engineered to deliver consistent wire feeding performance even over long conduit runs, ensuring that your welding operations remain uninterrupted and efficient. The unit distinguishes itself with a robust capacity to handle large-diameter wires—up to 3/32 inch (2.4 mm) for solid wire and .120 inch (3.2 mm) for cored wire—far exceeding the capabilities of standard competitive models.

At the core of its operation is the advanced MaxTrac® wire drive design (when paired with the drive assembly), supported by a rugged cast aluminum feed plate that protects the wire and ensures smooth delivery. The K5004-1 Control Box itself provides a sophisticated User Interface (UI) that brings digital precision to your fingertips. Operators can utilize digital presets for both voltage and wire feed speed, ensuring that parameters are exact and repeatable. To further enhance productivity, the unit features four user memory slots, allowing for the instant recall of frequently used procedures. This eliminates setup time and reduces the margin for error between shifts or different operators.

Durability is built into every component. The wire drive circuit board is fully encapsulated, offering maximum protection against dust, dirt, and moisture common in shop environments. Safety is also a priority; the system includes a user-selectable wire retract function that physically pulls the wire back into the nozzle after welding, preventing operator injury and reducing the risk of the wire sticking to the puddle. Whether configured for a single or dual setup, or mounted on a bench or boom, the Flex Feed 84 Control Box adapts to your specific workspace needs with its modular design.