K347A - Lincoln K347A NA-5SF Wire Drive Assembly 142:1 Ratio

Precision Wire Drive for NA-5SF Systems

Maximize the efficiency of your automated welding operations with the Lincoln Electric K347A Wire Drive. Engineered as a core component for the renowned NA-5SF automatic wire feeders, this assembly is built to deliver unwavering performance in high-duty cycle environments. It is the ideal solution for fabricators utilizing solid electrode wires who require a robust feeding mechanism capable of withstanding continuous industrial use.

Optimized Gearing for Heavy Wire

Feeding large diameter wires requires more than just a standard motor; it requires torque. The K347A features a powerful 142:1 gear ratio, designed to effortlessly drive solid wires ranging from 3/32" to 7/32" (2.4-5.6 mm). This gearing ensures that even when feeding through long conduits or against resistance, the wire speed remains constant. Consistent wire feeding is the foundation of a quality weld, and this drive unit eliminates the micro-stoppages and speed fluctuations that can lead to weld defects.

Operational Specifications

The unit supports a maximum wire feed speed of 290 IPM, balancing low-end torque with sufficient speed for high-productivity applications. It comes equipped with a wire straightener, a crucial accessory that removes the cast from the wire spool before it enters the gun or torch. This results in better tip alignment and arc placement, which is essential for automated seams where precision is non-negotiable.

Installation and Compatibility

Designed for straightforward installation on NA-5SF platforms, the K347A allows for quick maintenance turnarounds. This specific model is manufactured without high frequency insulation, making it suitable for standard DC welding processes where HF start is not utilized. Whether you are replacing a worn unit or configuring a new automatic feeder, the K347A offers the durability and Lincoln Electric quality assurance that professional welders trust.