{"product_id":"hf-tools-annular-cutter-carbide-tipped-50mm-cutting-depth-universal-shank","title":"HF-Tools Annular Cutter – Carbide Tipped, 50mm Cutting Depth, Universal Shank","description":"\u003ch2\u003eHF-Tools Carbide Tipped Annular Cutter\u003c\/h2\u003e\u003cp\u003eThe HF-Tools hollow drill bit — also known as a steel plate drill, magnetic drill bit, rail drill, or core bit — is engineered for precision hole-cutting in structural steel, bridges, shipbuilding, and complex drilling environments. This listing is for the \u003cstrong\u003ecarbide tipped\u003c\/strong\u003e variant with a \u003cstrong\u003e50mm cutting depth\u003c\/strong\u003e and \u003cstrong\u003euniversal shank\u003c\/strong\u003e, compatible with a wide range of imported and domestic magnetic drill machines and drilling equipment.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carbide tipped\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting depth:\u003c\/strong\u003e 50mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank type:\u003c\/strong\u003e Universal (suits most magnetic drill presses)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot pin:\u003c\/strong\u003e 12mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct length:\u003c\/strong\u003e 90mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRecommended Cutting Speeds (RPM by bore diameter)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon steel \u0026amp; copper:\u003c\/strong\u003e 310–260 RPM (40–49mm) \/ 200–170 RPM (50–59mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlloy steel:\u003c\/strong\u003e 280–230 RPM (40–49mm) \/ 185–160 RPM (50–59mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCast iron:\u003c\/strong\u003e 480–400 RPM (40–49mm) \/ 380–310 RPM (50–59mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium:\u003c\/strong\u003e 540–420 RPM (40–49mm) \/ 420–360 RPM (50–59mm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Handle Types\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRight-angle handle\u003c\/strong\u003e — centres from the rig via two screws; vertical spindle insert\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon handle\u003c\/strong\u003e — centres in drill will handle thimble; left to spindle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-holes handle\u003c\/strong\u003e — main shaft clockwise turn ring; drill directly into material\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOperations \u0026amp; Best Practices\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAlways use cutting fluid during operation\u003c\/li\u003e\n\u003cli\u003eReduce speed at the start and end of each drilling pass\u003c\/li\u003e\n\u003cli\u003eWhen overlapping holes, remove the first core before beginning the second\u003c\/li\u003e\n\u003cli\u003eEnsure workpiece is stable and secure before drilling\u003c\/li\u003e\n\u003cli\u003eDo not knock the blade drill bit against the casing to avoid damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWear protective clothing and a helmet at all times\u003c\/li\u003e\n\u003cli\u003eKeep hands clear of the blade and material — both can scratch and cut\u003c\/li\u003e\n\u003cli\u003eDo not work alone on site\u003c\/li\u003e\n\u003cli\u003eOperate only in a secure, stable position\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eCertificate of Conformity supplied. Sharp Tools Make Good Work.\u003c\/em\u003e\u003c\/p\u003e","brand":"Henan Ruijji","offers":[{"title":"30mm","offer_id":45169588404267,"sku":"ANNU-6G6R4Y","price":68.85,"currency_code":"AUD","in_stock":false},{"title":"32mm","offer_id":45169588437035,"sku":"ANNU-AHJNNH","price":75.99,"currency_code":"AUD","in_stock":false},{"title":"35mm","offer_id":45169588469803,"sku":"ANNU-HKBV9A","price":75.99,"currency_code":"AUD","in_stock":false},{"title":"40mm","offer_id":45169588502571,"sku":"ANNU-X24HT7","price":89.99,"currency_code":"AUD","in_stock":false},{"title":"50mm","offer_id":45169588535339,"sku":"ANNU-GXGWHB","price":109.99,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/4119\/3003\/files\/rn-image_picker_lib_temp_fe235bf8-c1e8-4a73-a47f-1d421717e0ab.jpg?v=1787813264","url":"https:\/\/precisiontoolstooling.au\/products\/hf-tools-annular-cutter-carbide-tipped-50mm-cutting-depth-universal-shank","provider":"Precision Tools \u0026 Tooling ","version":"1.0","type":"link"}