{"product_id":"top-tool-professional-3-jaw-self-centering-lathe-chuck-125mm-5-inch-cast-iron-construction-2-80mm-clamping-range-with-internal-external-jaws-and-t-key","title":"TOP-TOOL Professional 3-Jaw Self-Centering Lathe Chuck, 125mm\/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key","description":"\u003ch2\u003eProfessional 125mm \/ 5-Inch 3-Jaw Self-Centering Lathe Chuck\u003c\/h2\u003e\n\u003cp\u003eThe TOP-TOOL Professional 125mm (5-inch) chuck bridges the gap between hobby and light-industrial turning. \u003cstrong\u003eHT300 Cast Iron\u003c\/strong\u003e construction with \u003cstrong\u003eAISI 5140 alloy steel scroll\u003c\/strong\u003e handles medium-duty cuts with precision and stability.\u003c\/p\u003e\n\n\u003ch3\u003ePremium Materials \u0026amp; Hardening\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eHardness (HRC)\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBody\u003c\/td\u003e\n\u003ctd\u003eHT300 Cast Iron\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eJaws\u003c\/td\u003e\n\u003ctd\u003eAISI 1045 Carbon Steel\u003c\/td\u003e\n\u003ctd\u003e52-58\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eScroll Plate\u003c\/td\u003e\n\u003ctd\u003eAISI 5140 Alloy Steel\u003c\/td\u003e\n\u003ctd\u003e43-48\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBevel Gears\u003c\/td\u003e\n\u003ctd\u003eAISI 5140 Alloy Steel\u003c\/td\u003e\n\u003ctd\u003e45-50\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBack Plate\u003c\/td\u003e\n\u003ctd\u003eHT100 \/ Engineered Plastic\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHT300 Cast Iron Body:\u003c\/strong\u003e Superior rigidity and vibration damping for medium lathes. Reduces chatter during heavy facing and turning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardened Scroll \u0026amp; Gears:\u003c\/strong\u003e AISI 5140 alloy steel scroll (HRC 43-48) and bevel gears (HRC 45-50) for smooth, precise operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardened Jaws (HRC 52-58):\u003c\/strong\u003e AISI 1045 carbon steel jaws through-hardened for maximum grip strength.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGuaranteed Precision:\u003c\/strong\u003e Every chuck tested with 4 different diameter test bars. Repeatability ≤0.05mm (0.002\").\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlain Back Mount:\u003c\/strong\u003e 3× M8 mounting pattern. \u003cem\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Requires an adapter plate matched to your lathe spindle.\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes External \u0026amp; Internal Jaws:\u003c\/strong\u003e Supplied with both external jaws (5–95mm) and internal jaws.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT-Key Included:\u003c\/strong\u003e Secure tightening. Remove before running.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eChuck Diameter (D)\u003c\/td\u003e\n\u003ctd\u003e125mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eClamping Range (External)\u003c\/td\u003e\n\u003ctd\u003e5 – 95mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eD2\u003c\/td\u003e\n\u003ctd\u003e108mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eD3\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBody Length (H)\u003c\/td\u003e\n\u003ctd\u003e78mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eH1\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eJaw Step Height (h)\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMounting Thread (z-d)\u003c\/td\u003e\n\u003ctd\u003e3× M8\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRepeatability\u003c\/td\u003e\n\u003ctd\u003e≤0.05mm (0.002\")\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e4.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eError-Free Jaw Installation\u003c\/h3\u003e\n\u003cp\u003eNumbered jaws (1, 2, 3) match the chuck body slots for quick, accurate installation. Prevents misalignment and ensures optimal concentricity.\u003c\/p\u003e\n\n\u003ch3\u003eVersatile Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLathe:\u003c\/strong\u003e General turning, facing, drilling, boring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilling Machine:\u003c\/strong\u003e Workpiece holding for milling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrilling Machine:\u003c\/strong\u003e Precision drilling setups\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCNC Machine:\u003c\/strong\u003e Light CNC turning and production\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility Guide\u003c\/h3\u003e\n\u003cp\u003eDesigned for \u003cstrong\u003emedium benchtop lathes\u003c\/strong\u003e. \u003cbr\u003e\n\u003cstrong\u003eSizing Rule:\u003c\/strong\u003e Lathe swing diameter \u0026gt; Chuck diameter (125mm). For safe operation with jaw overhang, a swing of ≥160mm is recommended.\u003c\/p\u003e\n\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eKeep the scroll clean. Lubricate with \u003cstrong\u003eMolybdenum Disulfide (MoS2) grease\u003c\/strong\u003e periodically. Store in a dry environment.\u003c\/p\u003e","brand":"TOP-TOOL","offers":[{"title":"Default Title","offer_id":45882933739705,"sku":"G3-S23P-1BO0","price":86.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/9542\/0857\/files\/K11_5a1a65a2-8160-4b8c-910c-34a6a8a6275c.png?v=1776036995","url":"https:\/\/toptool.ca\/products\/top-tool-professional-3-jaw-self-centering-lathe-chuck-125mm-5-inch-cast-iron-construction-2-80mm-clamping-range-with-internal-external-jaws-and-t-key","provider":"TOP-TOOL","version":"1.0","type":"link"}