{"product_id":"mt4-lathe-alignment-test-bar-385mm-en31-alloy-steel","title":"🔧 MT4 Lathe Alignment Test Bar 15-1\/4\" (385mm) | EN31 Alloy Steel Precision Test Mandrel","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMT4 Lathe Alignment Test Bar\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a precision-ground inspection and calibration tool designed for accurately checking and correcting lathe tailstock and spindle alignment. Manufactured from premium \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEN31 alloy steel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, this test mandrel helps eliminate taper errors during long turning operations and ensures optimum machining accuracy.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFeaturing a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMorse Taper No. 4 (MT4) shank\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, this alignment bar can be used directly in MT4 spindle tapers or between centers for precision alignment testing. With a maximum run-out of only \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0.0002\"\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the test bar provides highly accurate and repeatable measurements, making it an essential tool for machine shops, tool rooms, maintenance departments, and precision engineering workshops.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhether used for machine calibration, spindle inspection, or tailstock realignment, this hardened and precision-ground test bar helps maintain the highest standards of machining performance and accuracy.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e✨ Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Precision MT4 Lathe Alignment Test Bar\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Manufactured from Premium EN31 Alloy Steel\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Hardened \u0026amp; Precision Ground Construction\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Maximum Run-Out: 0.0002\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Ideal for Tailstock Realignment\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Suitable for Spindle Alignment Testing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Can Be Used Between Centers or in Morse Taper Spindles\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Helps Eliminate Taper Errors During Long Turning Operations\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Excellent Wear Resistance and Dimensional Stability\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e✅ Professional Workshop Quality Inspection Tool\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e📏 Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eProduct Type: Lathe Alignment Test Bar\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eShank Type: Morse Taper No. 4 (MT4)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaterial: EN31 Alloy Steel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOverall Length: 15-1\/4\" (385mm)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaximum Run-Out: 0.0002\"\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConstruction: Hardened \u0026amp; Precision Ground\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApplication: Machine Alignment \u0026amp; Calibration\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003e🛠️ Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Tailstock Alignment\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Spindle Alignment Testing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Between Centers Inspection\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Lathe Calibration\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Machine Accuracy Verification\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Precision Turning Setup\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Tool Room Inspection\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Engineering Workshops\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Machine Shop Maintenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Quality Control Testing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Metalworking Operations\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e🔹 Precision Manufacturing\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e📦 Package Contents\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1 x MT4 Lathe Alignment Test Bar\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision Ground EN31 Alloy Steel Construction\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BLUEFOX TOOLS","offers":[{"title":"Default Title","offer_id":63012312580467,"sku":"Lathe Alignment Test Bar-MT4","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/3626\/6099\/files\/transparent-Photoroom-2026-06-22T171928.979.jpg?v=1782128988","url":"https:\/\/bluefoxtoolmart.com\/products\/mt4-lathe-alignment-test-bar-385mm-en31-alloy-steel","provider":"bluefoxtools","version":"1.0","type":"link"}