The Tweco Classic No. 4 MIG Gun (Part Number: 10401127)<\/strong> is a heavy-duty, air-cooled GMAW (MIG) welding gun designed for high-amperage industrial applications. Rated at 400 Amps at 60% duty cycle<\/strong> using CO2 gas, this gun is engineered to withstand harsh welding environments while delivering consistent performance. This specific configuration features a 20-foot (6.1 meter) cable<\/strong> and a Miller-style back-end connection<\/strong>, making it a direct plug-and-play replacement for compatible Miller wire feeders and power sources.<\/p>\n The gun comes factory-configured for 1\/16″ (1.6mm) welding wire<\/strong>, indicated by the part number suffix. It utilizes the renowned Tweco consumable platform, including 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers. The cable assembly is constructed with high-quality copper stranding and a durable outer jacket to resist cuts, abrasion, and heat. The metal-jacketed conductor tube (gooseneck) is rotatable, allowing welders to adjust the angle for optimal access to joints.<\/p>\n Designed for ease of maintenance, the Classic No. 4 features a simplified design that allows for quick liner changes and consumable replacement. The Miller connector ensures a secure electrical and gas connection to the machine. This gun is ideal for fabrication shops, shipyards, and manufacturing facilities where reliability and high deposition rates are required. The 20-foot length provides excellent reach, reducing the need to frequently reposition the welding machine.<\/p>\n","protected":false},"excerpt":{"rendered":"Product Overview The Tweco Classic No. 4 MIG Gun (Part Number: 10401127) is a heavy-duty, air-cooled GMAW (MIG) welding gun designed for high-amperage industrial applications. Rated at 400 Amps at 60% duty cycle using CO2 gas, this gun is engineered to withstand harsh welding environments while delivering consistent performance. This specific configuration features a 20-foot… View Article<\/a>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[2042,2043],"product_tag":[],"class_list":{"0":"post-1781958","1":"product","2":"type-product","3":"status-publish","5":"product_cat-mig-accessories","6":"product_cat-mig-guns","7":"pa_amps-400amp","8":"pa_back-end-miller","9":"pa_brand-tweco","10":"pa_duty-cycle-60-at-400a","11":"pa_length-20-ft","12":"pa_packaging-description-pack-of-1","13":"pa_wire-size-1-16","15":"first","16":"onbackorder","17":"taxable","18":"shipping-taxable","19":"purchasable","20":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product\/1781958","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/media?parent=1781958"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_brand?post=1781958"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_cat?post=1781958"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_tag?post=1781958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Technical Specifications<\/h2>\n
Compatibility and Maintenance<\/h2>\n