{"product_id":"bernardo-mola-abrasiva-in-corindone-per-nts-200","title":"Bernardo Corundum Abrasive Wheel for NTS 200","description":"\u003cp\u003e\u003cstrong\u003eBernardo Noble Corundum Grinding Wheel for NTS 200 – Ø 200 mm – K220 Grit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eK220 grit is a fine grit, suitable for final sharpening operations and achieving high-quality surface finishes. It is not suitable for massive material removal (for which coarser grits like K80 or K120 are used), but it excels in precision and uniformity of the cutting edge.\u003c\/p\u003e\n\u003cp\u003eNoble corundum is a synthetic form of high-purity crystalline alumina. It offers superior performance compared to standard corundum because it maintains sharpness longer and produces less heat during operation. This characteristic makes it ideal for heat-sensitive tools and operations requiring precision.\u003c\/p\u003e\n\u003cp\u003eThe 200 mm grinding wheel is a versatile size: suitable for the NTS 200 (hobby and educational lathe), large enough to offer stability and usage time, yet not as expensive as larger wheels (250-300 mm).\u003c\/p\u003e\n\u003ch2\u003eWho is this grinding wheel suitable for?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003cth\u003eSuitable?\u003c\/th\u003e\n\u003cth\u003eReason\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCraftsman \/ Workshop\u003c\/td\u003e\n\u003ctd\u003eIdeal\u003c\/td\u003e\n\u003ctd\u003eK220 for final finishes; noble corundum for durability and precision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchool \/ Laboratory\u003c\/td\u003e\n\u003ctd\u003eIdeal\u003c\/td\u003e\n\u003ctd\u003eFine grit teaches controlled sharpening; consistent quality for lessons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdvanced Hobbyist\u003c\/td\u003e\n\u003ctd\u003eIdeal\u003c\/td\u003e\n\u003ctd\u003eQuality grinding wheel for professional results in a home environment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Massive material removal (use K80-K120 grits); roughing heavily worn tools;\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3\u003eGrinding wheel characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter\u003c\/td\u003e\n\u003ctd\u003eØ 200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter bore\u003c\/td\u003e\n\u003ctd\u003eØ 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAbrasive material\u003c\/td\u003e\n\u003ctd\u003eSynthetic noble corundum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrit\u003c\/td\u003e\n\u003ctd\u003eK 220 (ISO 6106)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eNTS 200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax peripheral speed\u003c\/td\u003e\n\u003ctd\u003eNot declared by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003eCompliance and safety\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCE Marking\u003c\/td\u003e\n\u003ctd\u003eComplies with Machinery Directive 2006\/42\/CE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDIN Standard\u003c\/td\u003e\n\u003ctd\u003eDIN 69100 \/ ISO 603\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuality control\u003c\/td\u003e\n\u003ctd\u003eBernardo Austria\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eAccording to Bernardo terms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eStandard equipment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSingle grinding wheel Ø 200 × 40 mm K220\u003c\/li\u003e\n\u003cli\u003eSafety flange for spindle mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOptional and compatible accessories\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlange extender for vibration absorption (recommended)\u003c\/li\u003e\n\u003cli\u003eProtection discs (optional, depending on local regulations)\u003c\/li\u003e\n\u003cli\u003eNTS 200 motor flange spares (if worn)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the difference between K220 and coarser grits like K80?\u003c\/h3\u003e\n\u003cp\u003eK220 is much finer (smaller micrometers per grain). K80 is for heavy stock removal and roughing; K220 is for final finishing and precision sharpening. One cannot replace the other.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eK80: Material removal, roughing, coarse work\u003c\/li\u003e\n\u003cli\u003eK220: Finishing, precision sharpening, smooth drying\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow long does a K220 grinding wheel last over time?\u003c\/h3\u003e\n\u003cp\u003eIt depends on usage: with moderate sharpening (2-3 hours weekly), a grinding wheel lasts 6-12 months. With intensive use (school laboratory), 2-4 months. The grinding wheel wears progressively; when it becomes ineffective, it is replaced.\u003c\/p\u003e\n\u003ch3\u003eIs noble corundum better than standard corundum?\u003c\/h3\u003e\n\u003cp\u003eYes, it offers superior durability, produces less heat, maintains sharpness longer, and gives better finishes. The cost is higher, but the useful life justifies the investment for professional use.\u003c\/p\u003e\n\u003ch3\u003eCan I mount this grinding wheel directly on the NTS 200?\u003c\/h3\u003e\n\u003cp\u003eYes, the Ø 12 mm bore matches the NTS 200 spindle. Make sure to use the correct safety flanges and follow Bernardo's instructions for safe mounting. Never hand-tighten.\u003c\/p\u003e\n\u003ch3\u003eWhat safety precautions should I take?\u003c\/h3\u003e\n\u003cp\u003eAlways wear protection (glasses, shield); inspect the grinding wheel for cracks before use; mount stably; do not expose the grinding wheel to impacts; respect spindle speed limits; work in a ventilated area (abrasive dust).\u003c\/p\u003e\n\u003ch3\u003eHow should an unused grinding wheel be stored?\u003c\/h3\u003e\n\u003cp\u003eIn a dry environment at room temperature. Avoid impacts and drops. Protect from dust and moisture. A grinding wheel can last for years if stored correctly, even if unused.\u003c\/p\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":53005162119496,"sku":"05-2060","price":53.11,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Mola_abrasiva_corindone_nobile_K220_Bernardo_NTS_200.jpg?v=1777453953","url":"https:\/\/www.krollit.com\/products\/bernardo-abrasive-wheel-in-corindone-per-nts-200","provider":"Krollit","version":"1.0","type":"link"}