{"product_id":"bridgeport-12193443-shifter-crank-assembly-milling-machine","title":"Bridgeport 12193443 Shifter Crank Assembly Milling Machine","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe BRIDGEPORT 12193443 is a shifter crank assembly designed as a direct replacement component for Bridgeport milling machines. This assembly is part of the J-Head top housing mechanism, where it provides the mechanical linkage needed to shift spindle speeds or engage gear ranges during machine operation. It is a service and maintenance part used by machine tool technicians and millwrights performing repairs on Bridgeport-style knee mills. The component is sold as an individual assembly, making it suitable for targeted repairs without requiring a full subassembly replacement.\u003c\/p\u003e\u003cp\u003eThis shifter crank assembly is intended for use with Bridgeport I Series milling machines equipped with the J-Head top housing. It fits into the gear-shifting mechanism located in the upper head casting. This part is typically needed when the existing crank is worn, damaged, or missing, causing difficulty engaging spindle speed ranges. It is a common service item in machine shops, vocational training facilities, and manufacturing environments where Bridgeport-style vertical knee mills are in regular service.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit shifter crank assembly for J-Head top housing applications\u003c\/li\u003e\n\u003cli\u003eCompatible with Bridgeport I Series milling machines\u003c\/li\u003e\n\u003cli\u003eSold as a complete assembly for straightforward component replacement\u003c\/li\u003e\n\u003cli\u003eOEM-style fitment supports accurate reinstallation without modification\u003c\/li\u003e\n\u003cli\u003eIndividual unit packaging supports single-unit repair orders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Bridgeport I Series milling machines fitted with the J-Head top housing, as specified by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of this shifter crank assembly should be performed by a qualified machine tool technician or millwright. Before beginning disassembly, power down the milling machine completely and lock out the main disconnect per OSHA lockout\/tagout procedures. Access to the J-Head top housing typically requires removal of the top cover and related hardware. Refer to the Bridgeport J-Head service manual for the correct disassembly sequence and reassembly torque specifications before proceeding.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessory Type\u003c\/strong\u003e: Shifter Crank Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine Compatibility\u003c\/strong\u003e: J-Head Top Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: I Series Milling Machines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242100\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: BRIDGEPORT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 12193443\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BRIDGEPORT","offers":[{"title":"Default Title","offer_id":51541770142002,"sku":"12193443","price":56.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1387a1cbc85e69f037e155e448d18e22_4f43349b-adfa-4d82-863c-1f557acb455a.jpg?v=1785884557","url":"https:\/\/voomisupply.com\/products\/bridgeport-12193443-shifter-crank-assembly-milling-machine","provider":"Voomi Supply","version":"1.0","type":"link"}