{"product_id":"boka-er25-prazisionsspannzangen-0-01mm-rundlauf-grosse-2-16mm","title":"Boka ER25 precision collets 0.01mm concentricity size 2-16mm","description":"\u003cp\u003eDiscover the \u003cb\u003eBoka ER25 high-precision collet series\u003c\/b\u003e , available for tool diameters from \u003cb\u003e2mm to 16mm\u003c\/b\u003e . Made of \u003cb\u003ehardened 65Mn steel\u003c\/b\u003e , they offer \u003cb\u003e0.01mm concentricity\u003c\/b\u003e (4×D) and are \u003cb\u003ecompatible with all ER25 collet chucks\u003c\/b\u003e . Designed for milling, turning, and drilling machines, they feature \u003cb\u003edurability\u003c\/b\u003e and \u003cb\u003eincreased wear resistance\u003c\/b\u003e . This is achieved through \u003cb\u003ethermal aging\u003c\/b\u003e and \u003cb\u003ecryogenic treatment\u003c\/b\u003e . Optimum performance is ensured by \u003cb\u003efull tool shank insertion\u003c\/b\u003e .\u003c\/p\u003e\n\n\u003cp\u003e \u003ca href=\"https:\/\/www.bokatools.de\/products\/boka-praezisions-spannzangen-set-0-01mm-rundlauf-er16-er20-er25-er32-er40-65mn\" style=\"color: #007bff; text-decoration: underline;\"\u003eInterested in a complete set? Check out our ER series set here.\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003e Product advantages\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cb\u003eHighest precision:\u003c\/b\u003e Guaranteed 0.01mm concentricity (measured at 4×D) for improved workpiece quality and minimal tolerances.\u003c\/li\u003e\n\n\u003cli\u003e \n\u003cb\u003eIncreased service life:\u003c\/b\u003e Made of hardened 65Mn spring steel, with thermal aging and cryogenic treatment for maximum wear resistance and durability.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cb\u003eUniversal Compatibility:\u003c\/b\u003e Conforms to industry standards and is fully compatible with all common ER25 collet chucks.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cb\u003eOptimal tool handling:\u003c\/b\u003e Specially designed for cylindrical tool shanks; full insertion ensures maximum clamping force and tool stability.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cb\u003eWide clamping range:\u003c\/b\u003e Available in sizes from 2mm to 16mm, flexible for a variety of applications and tool diameters.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Technical data \u003c\/h2\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0505\/9503\/7346\/files\/ER25-para-pic.png\" alt=\"Technical drawing\" style=\"max-width: 1000px; width: 100%; height: auto;\"\u003e\u003c\/p\u003e\n\n\u003cdiv class=\"table-wrapper\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Article\u003c\/th\u003e\n\n\u003cth\u003e ER25-2\u003c\/th\u003e\n\n\u003cth\u003e ER25-3\u003c\/th\u003e\n\n\u003cth\u003e ER25-4\u003c\/th\u003e\n\n\u003cth\u003e ER25-5\u003c\/th\u003e\n\n\u003cth\u003e ER25-6\u003c\/th\u003e\n\n\u003cth\u003e ER25-7\u003c\/th\u003e\n\n\u003cth\u003e ER25-8\u003c\/th\u003e\n\n\u003cth\u003e ER25-9\u003c\/th\u003e\n\n\u003cth\u003e ER25-10\u003c\/th\u003e\n\n\u003cth\u003e ER25-11\u003c\/th\u003e\n\n\u003cth\u003e ER25-12\u003c\/th\u003e\n\n\u003cth\u003e ER25-13\u003c\/th\u003e\n\n\u003cth\u003e ER25-14\u003c\/th\u003e\n\n\u003cth\u003e ER25-15\u003c\/th\u003e\n\n\u003cth\u003e ER25-16\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e SKU\u003c\/td\u003e\n\n\u003ctd\u003e 56030901\u003c\/td\u003e\n\n\u003ctd\u003e 56030902\u003c\/td\u003e\n\n\u003ctd\u003e 56030903\u003c\/td\u003e\n\n\u003ctd\u003e 56030904\u003c\/td\u003e\n\n\u003ctd\u003e 56030905\u003c\/td\u003e\n\n\u003ctd\u003e 56030906\u003c\/td\u003e\n\n\u003ctd\u003e 56030907\u003c\/td\u003e\n\n\u003ctd\u003e 56030908\u003c\/td\u003e\n\n\u003ctd\u003e 56030909\u003c\/td\u003e\n\n\u003ctd\u003e 56030910\u003c\/td\u003e\n\n\u003ctd\u003e 56030911\u003c\/td\u003e\n\n\u003ctd\u003e 56030912\u003c\/td\u003e\n\n\u003ctd\u003e 56030913\u003c\/td\u003e\n\n\u003ctd\u003e 56030914\u003c\/td\u003e\n\n\u003ctd\u003e 56030915\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Model\u003c\/td\u003e\n\n\u003ctd\u003e ER25-2mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-3mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-4mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-5mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-6mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-7mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-8mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-9mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-10mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-11mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-12mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-13mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-14mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-15mm\u003c\/td\u003e\n\n\u003ctd\u003e ER25-16mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Size (d)\u003c\/td\u003e\n\n\u003ctd\u003e 2mm\u003c\/td\u003e\n\n\u003ctd\u003e 3mm\u003c\/td\u003e\n\n\u003ctd\u003e 4mm\u003c\/td\u003e\n\n \u003ctd\u003e5mm\u003c\/td\u003e\n\n\u003ctd\u003e 6mm\u003c\/td\u003e\n\n\u003ctd\u003e 7mm\u003c\/td\u003e\n\n\u003ctd\u003e 8mm\u003c\/td\u003e\n\n\u003ctd\u003e 9mm\u003c\/td\u003e\n\n\u003ctd\u003e 10mm\u003c\/td\u003e\n\n\u003ctd\u003e 11mm\u003c\/td\u003e\n\n\u003ctd\u003e 12mm\u003c\/td\u003e\n\n\u003ctd\u003e 13mm\u003c\/td\u003e\n\n\u003ctd\u003e 14mm\u003c\/td\u003e\n\n\u003ctd\u003e 15mm\u003c\/td\u003e\n\n\u003ctd\u003e 16mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e clamping area\u003c\/td\u003e\n\n\u003ctd\u003e 2mm - 1mm\u003c\/td\u003e\n\n\u003ctd\u003e 3mm - 2mm\u003c\/td\u003e\n\n\u003ctd\u003e 4mm - 3mm\u003c\/td\u003e\n\n\u003ctd\u003e 5mm - 4mm\u003c\/td\u003e\n\n\u003ctd\u003e 6mm - 5mm\u003c\/td\u003e\n\n\u003ctd\u003e 7mm - 6mm\u003c\/td\u003e\n\n\u003ctd\u003e 8mm - 7mm\u003c\/td\u003e\n\n\u003ctd\u003e 9mm - 8mm\u003c\/td\u003e\n\n\u003ctd\u003e 10mm - 9mm\u003c\/td\u003e\n\n\u003ctd\u003e 11mm - 10mm\u003c\/td\u003e\n\n\u003ctd\u003e 12mm - 11mm\u003c\/td\u003e\n\n\u003ctd\u003e 13mm - 12mm\u003c\/td\u003e\n\n\u003ctd\u003e 14mm - 13mm\u003c\/td\u003e\n\n\u003ctd\u003e 15mm - 14mm\u003c\/td\u003e\n\n\u003ctd\u003e 16mm - 15mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Diameter (D)\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\u003ctd\u003e 26mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Total length (L)\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\u003ctd\u003e 34mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Concentricity\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\u003ctd\u003e ≤ 0.01mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e form\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\u003ctd\u003e Around\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Material type\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\u003ctd\u003e Alloy Steel\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Packaging dimensions (mm)\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\u003ctd\u003e 30*30*38\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e Gross weight (kg)\u003c\/td\u003e\n\n\u003ctd\u003e 0.09\u003c\/td\u003e\n\n\u003ctd\u003e 0.09\u003c\/td\u003e\n\n\u003ctd\u003e 0.08\u003c\/td\u003e\n\n\u003ctd\u003e 0.08\u003c\/td\u003e\n\n\u003ctd\u003e 0.07\u003c\/td\u003e\n\n\u003ctd\u003e 0.07\u003c\/td\u003e\n\n\u003ctd\u003e 0.08\u003c\/td\u003e\n\n\u003ctd\u003e 0.07\u003c\/td\u003e\n\n\u003ctd\u003e 0.07\u003c\/td\u003e\n\n\u003ctd\u003e 0.07\u003c\/td\u003e\n\n\u003ctd\u003e 0.07\u003c\/td\u003e\n\n\u003ctd\u003e 0.06\u003c\/td\u003e\n\n\u003ctd\u003e 0.06\u003c\/td\u003e\n\n\u003ctd\u003e 0.05\u003c\/td\u003e\n\n\u003ctd\u003e 0.05\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n    body {\n      font-family: Arial, sans-serif;\n      line-height: 1.6;\n      padding: 16px;\n      color: #333;\n      font-size: 16px;\n    }\n\n    h1 {\n      font-size: 22px;\n      font-weight: bold;\n    }\n\n    h2 {\n      font-size: 20px;\n      font-weight: bold;\n      margin-top: 28px;\n    }\n\n    h3 {\n      font-size: 18px;\n      font-weight: bold;\n      margin-top: 24px;\n    }\n\n    img {\n      max-width: 100%;\n      height: auto;\n      border-radius: 8px;\n      box-shadow: rgba(0, 0, 0, 0.08) 0px 3px 6px,\n                  rgba(0, 0, 0, 0.12) 0px 3px 6px;\n      margin: 12px 0;\n    }\n\n    .table-wrapper {\n      overflow-x: auto;\n      margin: 12px 0;\n      border-radius: 8px;\n      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);\n      border: 1px solid #ddd;\n      position: relative;\n      z-index: 1;\n    }\n\n    table {\n      width: 100%; \/* 允许表格在有足够空间时自动扩展 *\/\n      border-collapse: collapse;\n      border-spacing: 0;\n      \/* 这里不再设置min-width，让内容决定宽度 *\/\n    }\n\n    th, td {\n      padding: 10px 12px;\n      border: 1px solid #ddd;\n      text-align: center;\n      background-color: #fff;\n    }\n\n    \/* 默认数据列字体大小，比body默认字体小1号 (16px -\u003e 15px) *\/\n    td {\n      font-size: 15px; \n    }\n\n    th {\n      background-color: #f2f2f2;\n      font-weight: bold;\n    }\n\n    tr:nth-child(even) td {\n      background-color: #fafafa;\n    }\n\n    \/* 首列的特殊样式 - 标题和数据行 *\/\n    th:first-child,\n    td:first-child {\n      position: sticky;\n      left: 0;\n      z-index: 2; \/* 确保在滚动时覆盖其他单元格 *\/\n      background-color: #f2f2f2;\n      box-shadow: 1px 0 0 0 #ddd;\n      font-weight: bold; \/* 保持首列字体加粗 *\/\n      min-width: 120px; \/* 首列的最小宽度设为120px *\/\n      font-size: 16px; \/* 首列字体保持不变 *\/\n    }\n\n    \/* 其他数据列的最小宽度 *\/\n    th:not(:first-child),\n    td:not(:first-child) {\n        min-width: 95px; \/* 其他数据列的最小宽度设为95px *\/\n    }\n\n    tr:nth-child(even) td:first-child {\n      background-color: #eaeaea;\n    }\n\n    \/* 确保非首列的数据单元格字体小1号 *\/\n    td:not(:first-child) {\n        font-size: 15px; \n    }\n\n    \/* 针对屏幕宽度小于等于700px时的媒体查询\n       这里不再需要额外的媒体查询来设置min-width，因为td\/th上的min-width已经会生效\n       如果表格整体宽度超出，overflow-x: auto 会自动提供滚动条。\n    *\/\n    @media (max-width: 768px) { \/* 调整为768px，与您body的媒体查询保持一致 *\/\n      body {\n        font-size: 15px;\n        padding: 12px;\n      }\n\n      h1 {\n        font-size: 20px;\n      }\n\n      h2 {\n        font-size: 18px;\n      }\n\n      h3 {\n        font-size: 16px;\n      }\n    }\n  \u003c\/style\u003e","brand":"GEM 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