{"product_id":"ujk-router-collet-extension-12mm-shank","title":"UJK Router Collet Extension (12mm Shank)","description":"\u003ch2\u003eUJK Router Collet Extension (12mm Shank)\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eUJK Router Collet Extension\u003c\/strong\u003e solves a common issue when using routers inverted in a table: even fully plunged, the collet often sits below the table surface, limiting cutting depth. This precision extension uses standard ER20 engineering collets, which grip over a 1mm diameter range without losing accuracy, providing a safer, more stable cut with less vibration. The collet nut includes an ejection ring for fast, easy cutter changes, and the extension supports speeds up to 18,000 RPM. Tip: Insert the collet extension at least 2\/3 of the way in and up to the K line.\u003c\/p\u003e\n\u003cp\u003eFor best practice always start your router on the slowest speed, test the cutter set up on a piece of scrap timber, increasing the speed gradually to get the best cut. Take note of any vibration that becomes apparent, reduce your router's speed if there is any vibration.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIdeal for router table setups to maximize cutting depth\u003c\/li\u003e\n\u003cli\u003eCollet suitable for 12 mm shank cutters\u003c\/li\u003e\n\u003cli\u003eBritish made, CNC manufactured, stainless steel construction\u003c\/li\u003e\n\u003cli\u003eSecure grip all around the cutter for reduced vibration and safer routing\u003c\/li\u003e\n\u003cli\u003eCollet nut with ejection ring for quick cutter changes\u003c\/li\u003e\n\u003cli\u003eMaximum RPM: 18,000: body length: 40 mm: overall length: 75 mm\u003c\/li\u003e\n\u003cli\u003eCollet nut requires 27 mm spanner Additional collets available for multiple shank sizes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e UJK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode:\u003c\/strong\u003e UJK-111749\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacked size:\u003c\/strong\u003e 9 x 7.5 x 7.5 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 210 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e the UK\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eYou may also need\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ujk-professional-cast-iron-router-table-top\"\u003eUJK Professional Cast Iron Router Table Top\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ujk-portable-trim-router-table\"\u003eUJK Portable Trim Router Table\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ujk-double-horizontal-featherboards\"\u003eUJK Double Horizontal Featherboards\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMore from the range\u003c\/h3\u003e\u003cp\u003eBrowse our \u003ca href=\"\/collections\/ujk-tools\"\u003eUJK Tools\u003c\/a\u003e range for related UJK products.\u003c\/p\u003e","brand":"UJK","offers":[{"title":"Default Title","offer_id":64986888667513,"sku":"UJK-111749","price":25.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0551\/7249\/7581\/files\/ujk-router-collet-extension-12mm-shank.png?v=1792841263","url":"https:\/\/www.greenvill.co.uk\/products\/ujk-router-collet-extension-12mm-shank","provider":"Greenvill Crafts","version":"1.0","type":"link"}