{"product_id":"cylindrical-shank-collet-chuck-round-nut","title":"Cylindrical Shank Collet Chuck — Round Nut Type","description":"\u003ch2\u003eCylindrical Shank Collet Chuck — Round Nut Type\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCylindrical Shank Collet Chuck — Round Nut Type\u003c\/strong\u003e — precision collet for holding straight-shank tools (end mills, drills, taps, reamers) in CNC milling machines, machining centres, and drill presses. Hardened steel body, precision ground for low runout (typical TIR \u0026lt; 0.01 mm at nose). Slotted sleeve design compresses evenly around the tool shank when the nut is tightened.\u003c\/p\u003e\n\n\u003cp style=\"font-size:12px;color:#555;\"\u003e\u003cem\u003eAlso searched as: ER collet, spring collet, tool collet, CNC collet holder, precision collet chuck.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:13px;\"\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;width:38%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eMidland Tools\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f6f8fb;\"\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eCollet Chuck\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eHardened tool steel, precision ground\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f6f8fb;\"\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e\u003cstrong\u003eRunout (TIR)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e\u0026lt; 0.01 mm at nose (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e\u003cstrong\u003eSold as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003ePer piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eER-collet quick reference\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:12px;\"\u003e\n  \u003cthead\u003e\u003ctr style=\"background:#0e1b4d;color:white;\"\u003e\n    \u003cth style=\"padding:6px 10px;text-align:left;\"\u003eCollet series\u003c\/th\u003e\n    \u003cth style=\"padding:6px 10px;text-align:left;\"\u003eClamping range\u003c\/th\u003e\n    \u003cth style=\"padding:6px 10px;text-align:left;\"\u003eCommon use\u003c\/th\u003e\n  \u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eER-11\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e0.5–7 mm\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eMicro-end mills, PCB drills\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f6f8fb;\"\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eER-16\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e1–10 mm\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eSmall mills, drills\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eER-20\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e1–13 mm\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eGeneral-purpose milling\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f6f8fb;\"\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eER-25\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e1–16 mm\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eStandard machining centre\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eER-32\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e3–20 mm\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eHeavy milling, shell mill arbors\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f6f8fb;\"\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eER-40\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003e3–26 mm\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eLarge end mills, face mill arbors\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp style=\"font-size:12px;color:#666;margin-top:4px;\"\u003eEach collet clamps a narrow 1 mm sub-range — use the correct collet size for each shank diameter.\u003c\/p\u003e\n\n\u003cp style=\"margin-top:12px;\"\u003e\u003cstrong\u003eDispatch:\u003c\/strong\u003e Same day from Chandni Chowk, Delhi. India-wide shipping.\u003c\/p\u003e\n\u003cp\u003eNeed a full ER collet set, specific size, or matching collet chuck? \u003ca href=\"https:\/\/wa.me\/917011182829\"\u003eWhatsApp us at +91 70111 82829\u003c\/a\u003e.\u003c\/p\u003e","brand":"Midland Tools","offers":[{"title":"Ø20 \/ ER-25 \/ 60mm","offer_id":49374031249648,"sku":null,"price":848.0,"currency_code":"INR","in_stock":true},{"title":"Ø25 \/ ER-25 \/ 60mm","offer_id":49374031282416,"sku":null,"price":864.0,"currency_code":"INR","in_stock":true},{"title":"Ø25 \/ ER-32 \/ 60mm","offer_id":49374031315184,"sku":null,"price":960.0,"currency_code":"INR","in_stock":true},{"title":"Ø25.4 \/ ER-25 \/ 60mm","offer_id":49374031347952,"sku":null,"price":920.0,"currency_code":"INR","in_stock":true},{"title":"Ø25.4 \/ ER-32 \/ 60mm","offer_id":49374031380720,"sku":null,"price":1008.0,"currency_code":"INR","in_stock":true},{"title":"Ø32 \/ ER-25 \/ 65mm","offer_id":49374031413488,"sku":null,"price":920.0,"currency_code":"INR","in_stock":true},{"title":"Ø32 \/ ER-32 \/ 65mm","offer_id":49374031446256,"sku":null,"price":1008.0,"currency_code":"INR","in_stock":true},{"title":"Ø32 \/ ER-40 \/ 65mm","offer_id":49374031479024,"sku":null,"price":1440.0,"currency_code":"INR","in_stock":true},{"title":"Ø40 \/ ER-25 \/ 85mm","offer_id":49374031511792,"sku":null,"price":1144.0,"currency_code":"INR","in_stock":true},{"title":"Ø40 \/ ER-32 \/ 85mm","offer_id":49374031544560,"sku":null,"price":1144.0,"currency_code":"INR","in_stock":true},{"title":"Ø40 \/ ER-40 \/ 85mm","offer_id":49374031577328,"sku":null,"price":1480.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/5890\/5840\/files\/Screenshot2026-03-22023633.png?v=1774127203","url":"https:\/\/midlandtools.in\/products\/cylindrical-shank-collet-chuck-round-nut","provider":"Midland Tools ","version":"1.0","type":"link"}