{"product_id":"bridgeport-28025716-speed-changer-shaft-milling-machine","title":"Bridgeport 28025716 Speed Changer Shaft Milling Machine","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BRIDGEPORT 28025716 is a replacement speed changer shaft designed for use in BRIDGEPORT milling machines. This shaft is a mechanical drive component that transfers rotational motion within the speed-change assembly, allowing the operator to select the correct spindle RPM range for a given cutting application. It is an OEM-style replacement part intended for installation by qualified machine tool technicians or maintenance professionals performing drivetrain service on the 2J-Head Back Gear assembly. Proper function of this shaft is critical to smooth gear engagement and accurate speed selection during milling operations.\u003c\/p\u003e\n\u003cp\u003eThis speed changer shaft is specifically designed for use with I Series BRIDGEPORT milling machines equipped with the 2J-Head Back Gear configuration. It is a common service part addressed during scheduled maintenance or unplanned drivetrain repairs on knee mills found in job shops, tooling facilities, and industrial maintenance departments. When the existing shaft shows wear, damage, or gear engagement issues, this direct-replacement part restores proper mechanical function to the head assembly.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement speed changer shaft for BRIDGEPORT milling machines\u003c\/li\u003e\n  \u003cli\u003eCompatible with 2J-Head Back Gear configuration\u003c\/li\u003e\n  \u003cli\u003eDesigned for I Series BRIDGEPORT milling machines\u003c\/li\u003e\n  \u003cli\u003eSold individually as a single-unit replacement component\u003c\/li\u003e\n  \u003cli\u003eOEM-style fitment supports accurate spindle speed selection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with BRIDGEPORT I Series milling machines equipped with the 2J-Head Back Gear assembly.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machine tool technician or industrial maintenance professional. Before beginning any drivetrain disassembly, power down the machine completely and lock out the main disconnect in accordance with applicable LOTO procedures. Refer to the BRIDGEPORT service manual for head disassembly sequence before removing or installing the speed changer shaft. Do not force the shaft into engagement with mating gear components, as improper seating can cause premature wear or gear damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccessory Type\u003c\/strong\u003e: Speed Changer Shaft\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMachine Compatibility\u003c\/strong\u003e: 2J-Head Back Gear\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\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 28025716\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BRIDGEPORT","offers":[{"title":"Default Title","offer_id":51541585297714,"sku":"28025716","price":76.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1387a1cbc85e69f037e155e448d18e22_2510fd5c-fecf-4823-9e7c-b1f882e5214b.jpg?v=1785879921","url":"https:\/\/voomisupply.com\/products\/bridgeport-28025716-speed-changer-shaft-milling-machine","provider":"Voomi Supply","version":"1.0","type":"link"}