{"product_id":"er-collet-clamping-nut-er11-er16-er20-er25-er32-er40-milling-chuck","title":"High Precision ER Collet Clamping Nut ER11 ER16 ER20 ER25 ER32 ER40","description":"\n\u003ch2\u003eHigh Precision ER Collet Clamping Nut — ER11 \/ ER16 \/ ER20 \/ ER25 \/ ER32 \/ ER40\u003c\/h2\u003e\n\u003cp\u003eUpgrade your milling setup with these industrial-grade ER clamping nuts, engineered for machinists and tooling professionals who demand tight tolerances and consistent performance. Available in A, M, and UM series across six ER sizes, these lock nuts deliver rock-solid collet retention on a wide range of ER tool holders.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Precision Runout:\u003c\/strong\u003e 0.005 mm beating tolerance for repeatable, accurate cuts every time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Chrome Steel Construction:\u003c\/strong\u003e Manufactured from 20CrMoTi chromium steel, hardened to HRC 52–55 for outstanding durability and wear resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStrong Clamping Force:\u003c\/strong\u003e Firm, consistent grip that resists deformation under demanding machining loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReduced Vibration \u0026amp; Noise:\u003c\/strong\u003e Precision-ground inner taper (accuracy grade 4H) minimises chatter for smoother surface finishes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Spindle Speed Compatible:\u003c\/strong\u003e Rated for spindle speeds up to 30,000 RPM.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Tool Holder Compatibility:\u003c\/strong\u003e Fits BT-ER, NT-ER, MTA-ER, MTB-ER, R8-ER, and ER straight extension shank tool holders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n    \u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eDetail\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eType\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eER Clamping Nut\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMaterial\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eChrome Steel (20CrMoTi)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHardness\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHRC 52–55\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eRunout Precision\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0.005 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eInner Taper Grade\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e4H\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMax Spindle Speed\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026lt; 30,000 RPM\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAvailable Models\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eER11-A, ER16-A, ER20-A, ER11-M, ER16-M, ER20-M, ER25-UM, ER32-UM, ER40-UM\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCountry of Origin\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × ER Clamping Nut (model of your choice)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eActual colour may vary slightly from product images due to monitor brightness and ambient lighting conditions. Please allow for minor measurement deviations.\u003c\/p\u003e\n\n\u003cp\u003eFor workplace safety guidelines when operating milling machines and tool holders, refer to the \u003ca href=\"https:\/\/www.osha.gov\/machine-guarding\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Machine Guarding resource\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What ER sizes and series are available for these precision clamping nuts?\u003c\/h4\u003e\n\u003cp\u003eA: These ER collet clamping nuts are available in ER11, ER16, ER20, ER25, ER32, and ER40 sizes. Each size comes in A-type, M-type, or UM-type variants (e.g. ER11-A, ER16-M, ER25-UM), so you can match exactly to your existing tool holder setup.\u003c\/p\u003e\n\u003ch4\u003eQ: Which tool holders are compatible with these ER clamping nuts?\u003c\/h4\u003e\n\u003cp\u003eA: These nuts are compatible with a wide range of ER tool holders, including BT-ER, NT-ER, MTA-ER, MTB-ER, R8-ER, and ER straight extension shank holders — making them highly versatile for CNC milling centres and manual milling machines alike.\u003c\/p\u003e\n\u003ch4\u003eQ: What makes these ER nuts \"high precision\"?\u003c\/h4\u003e\n\u003cp\u003eA: Each nut is manufactured from hardened 20CrMoTi chrome steel (HRC 52–55) with a precision-ground inner taper to accuracy grade 4H and a runout tolerance of just 0.005 mm. This ensures minimal tool deflection, reduced vibration, and consistently accurate machining results at spindle speeds up to 30,000 RPM.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What ER sizes and series are available for these precision clamping nuts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These ER collet clamping nuts are available in ER11, ER16, ER20, ER25, ER32, and ER40 sizes. 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This ensures minimal tool deflection, reduced vibration, and consistently accurate machining results at spindle speeds up to 30,000 RPM.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Tools \u0026 Hardware\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/collections\/tools-hardware\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"High Precision ER Collet Clamping Nut ER11 ER16 ER20 ER25 ER32 ER40\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/products\/er-collet-clamping-nut-er11-er16-er20-er25-er32-er40-milling-chuck\"}]}\u003c\/script\u003e","brand":"Vue","offers":[{"title":"ER25 UM \/ China Mainland","offer_id":48779721867456,"sku":"200007763:201336100;200182261:201452367#ER25 UM","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER20 M \/ China Mainland","offer_id":48779721900224,"sku":"200007763:201336100;200182261:202360809#ER20 M","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER40 UM \/ China Mainland","offer_id":48779721932992,"sku":"200007763:201336100;200182261:200004525#ER40 UM","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER32 UM \/ China Mainland","offer_id":48779721965760,"sku":"200007763:201336100;200182261:200660911#ER32 UM","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER11 A \/ China Mainland","offer_id":48779721998528,"sku":"200007763:201336100;200182261:202530816#ER11 A","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER20 A \/ China Mainland","offer_id":48779722031296,"sku":"200007763:201336100;200182261:202360806#ER20 A","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER16 A \/ China Mainland","offer_id":48779722064064,"sku":"200007763:201336100;200182261:202530818#ER16 A","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER16 M \/ China Mainland","offer_id":48779722096832,"sku":"200007763:201336100;200182261:202360808#ER16 M","price":31.99,"currency_code":"USD","in_stock":true},{"title":"ER11 M \/ China Mainland","offer_id":48779722129600,"sku":"200007763:201336100;200182261:202360807#ER11 M","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/9338\/7968\/files\/Sa56cddae7abb40bba794492f511770b1C.webp?v=1786375324","url":"https:\/\/vueselect.com\/products\/er-collet-clamping-nut-er11-er16-er20-er25-er32-er40-milling-chuck","provider":"Vue","version":"1.0","type":"link"}