{"id":2592,"date":"2026-09-15T07:01:39","date_gmt":"2026-09-15T07:01:39","guid":{"rendered":"https:\/\/gushidiamondtools.com\/?post_type=product&p=2592"},"modified":"2026-09-15T07:08:03","modified_gmt":"2026-09-15T07:08:03","slug":"cbn-grinding-wheel","status":"publish","type":"product","link":"https:\/\/gushidiamondtools.com\/es\/product\/cbn-grinding-wheel\/","title":{"rendered":"CBN Grinding Wheel"},"content":{"rendered":"
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When you grind\u00a0hardened steel, high-speed steel or die steel<\/strong>, the wheel you pick decides whether you get a mirror edge or a burnt one. GUSHI resin-bonded\u00a0CBN (cubic boron nitride)<\/strong>\u00a0grinding wheels are built for exactly that job.<\/p>\n

CBN is the second-hardest abrasive after diamond, but unlike diamond it has\u00a0no chemical affinity with iron<\/strong>\u00a0\u2014 so it does not graphitize or burn away on steel. Combined with a resilient phenolic resin bond, the wheel cuts cool, self-sharpens as it wears, and holds a profile through thousands of parts.<\/p>\n

The result buyers actually care about: a repeatable surface finish down to\u00a0Ra 0.2 \u03bcm<\/strong>, far fewer dressing stops, and a wheel that simply lasts longer.<\/p>\n<\/div>\n

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Why CBN \u2014 and Why Resin Bond<\/h2>\n

A grinding wheel is three things working together: the abrasive, the bond that holds it, and the shape that fits your machine. Getting the first two right is what separates a clean grind from a scrapped part.<\/p>\n

1. CBN is the correct abrasive for steel<\/h3>\n

Cubic boron nitride stays hard at grinding temperatures up to ~1400\u00b0C and does not react with iron-group metals. Diamond \u2014 physically harder \u2014\u00a0does<\/em>\u00a0react with iron at the heat of grinding and converts to graphite, so it disappears on steel. That single fact is why the rule is simple:\u00a0steel \u2192 CBN, everything else hard \u2192 diamond<\/strong>.<\/p>\n

2. Resin bond cuts cool and finishes smooth<\/h3>\n

The phenolic resin matrix is slightly flexible. It absorbs vibration, cushions the part, and releases dull grains to expose fresh CBN (self-sharpening). That gives the lowest cutting temperature of the three bond types and the smoothest surface \u2014 which is why resin is the default for tool sharpening and finishing. Fiberglass mesh reinforcement keeps the wheel safe at speed.<\/p>\n

3. The wheel does the work, not the operator<\/h3>\n

Because CBN stays sharp and the bond holds form, a single wheel handles rough stock removal through polishing by changing only the grit. You stop fighting heat, loading and constant re-dressing.<\/p>\n<\/div>\n

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Full Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Product<\/th>\nResin Bonded CBN Grinding Wheel<\/td>\n<\/tr>\n
Abrasive<\/th>\nCubic Boron Nitride (CBN) \u2014 monocrystalline & polycrystalline<\/td>\n<\/tr>\n
Bond type<\/th>\nHigh-temperature phenolic resin, fiberglass-mesh reinforced<\/td>\n<\/tr>\n
Hardness grade<\/th>\nSoft (G\u2013H) to Medium-Hard (K\u2013N)<\/td>\n<\/tr>\n
Grit \/ mesh<\/th>\n46#, 60#, 80#, 100#, 120#, 150#, 180#, 200#, 240#, 280#, 320#, 400#, 500#, 600#, 800#, 1000#, 1200# (custom to 3000#)<\/td>\n<\/tr>\n
Grit class<\/th>\nCoarse 46\u2013120 \/ Medium 120\u2013240 \/ Fine 280\u2013600 \/ Polishing 800\u20133000<\/td>\n<\/tr>\n
Concentration<\/th>\n75%, 100%, 125%, 150% (standard 100% \/ 125%)<\/td>\n<\/tr>\n
Shapes<\/th>\n1A1 (straight), 6A2 (cylindrical cup), 11A2 (flaring cup), 12A2, 12V9 (insert), 1A1R, custom<\/td>\n<\/tr>\n
Outer diameter (D)<\/th>\n100, 125, 150, 175, 200, 250, 300 mm (custom to 500\/600)<\/td>\n<\/tr>\n
Bore (H)<\/th>\n20, 25.4, 31.75, 50.8, 76.2, 127 mm<\/td>\n<\/tr>\n
Thickness (T)<\/th>\n3, 5, 6, 8, 10, 12, 15, 20, 25 mm<\/td>\n<\/tr>\n
Rim width (cup)<\/th>\n5\u201325 mm<\/td>\n<\/tr>\n
Max operating speed<\/th>\n35, 40, 50, 60 m\/s (up to 125 m\/s reinforced)<\/td>\n<\/tr>\n
Max RPM (\u00d8200 @ 60 m\/s)<\/th>\n\u2248 5,730 rpm (use marked rating)<\/td>\n<\/tr>\n
Surface finish<\/th>\nRa \u2264 0.2 \u03bcm<\/td>\n<\/tr>\n
Dimensional tolerance<\/th>\n\u00b11\u20135 \u03bcm<\/td>\n<\/tr>\n
Self-sharpening<\/th>\nYes \u2014 resin wears to expose fresh CBN<\/td>\n<\/tr>\n
Thermal stability<\/th>\nMaintains hardness to ~1400\u00b0C<\/td>\n<\/tr>\n
Coolant<\/th>\nWater-soluble emulsion or light oil (recommended)<\/td>\n<\/tr>\n
Best for<\/th>\nHSS, tool steel, die steel (H13 \/ Cr12MoV), bearing steel (52100), hardened alloy (4140 \/ 4340), hardened stainless, Ti & Ni superalloys<\/td>\n<\/tr>\n
Not suitable for<\/th>\nTungsten carbide, ceramics, glass, stone, soft non-ferrous (use a diamond wheel)<\/td>\n<\/tr>\n
Wheel life vs Al\u2082O\u2083<\/th>\n30\u2013100\u00d7 longer<\/td>\n<\/tr>\n
Certification<\/th>\nISO 9001<\/td>\n<\/tr>\n
Color<\/th>\nBrown \/ black resin body<\/td>\n<\/tr>\n
Packaging<\/th>\nIndividual box + foam, export carton<\/td>\n<\/tr>\n
MOQ<\/th>\n50 pcs (standard sizes)<\/td>\n<\/tr>\n
Lead time<\/th>\n5\u201310 days stock; 15\u201330 days custom<\/td>\n<\/tr>\n
Origin<\/th>\nZhejiang, China<\/td>\n<\/tr>\n
Brand<\/th>\nGUSHI<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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CBN Wheel vs Diamond Wheel \u2014 Choose by Workpiece<\/h2>\n

This is the one decision that matters most, and it is based purely on the\u00a0material you are grinding<\/strong>, not on price or brand.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Dimension<\/th>\nCBN Wheel (this product)<\/th>\nDiamond Wheel<\/th>\n<\/tr>\n<\/thead>\n
Hardened steel, HSS, tool\/die steel<\/th>\nCorrect choice<\/td>\nWrong \u2014 reacts with iron<\/td>\n<\/tr>\n
Tungsten carbide, ceramics, glass, stone<\/th>\nWrong \u2014 too slow<\/td>\nCorrect choice<\/td>\n<\/tr>\n
Chemical affinity with iron<\/th>\nNone<\/td>\nReacts \u2192 graphitization at heat<\/td>\n<\/tr>\n
Thermal stability<\/th>\n~1400\u00b0C<\/td>\nLower<\/td>\n<\/tr>\n
Surface finish<\/th>\nRa \u2264 0.2 \u03bcm<\/td>\nRa \u2264 0.2 \u03bcm<\/td>\n<\/tr>\n
Coolant<\/th>\nRequired (ferrous)<\/td>\nRequired (most jobs)<\/td>\n<\/tr>\n
Typical use<\/th>\nTool sharpening, steel finishing<\/td>\nCarbide, ceramic, glass<\/td>\n<\/tr>\n
Per-part cost on steel<\/th>\nLow (long life)<\/td>\nVery high \/ fails<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Resin vs Vitrified vs Metal Bond (for CBN)<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Dimension<\/th>\nResin (this)<\/th>\nVitrified<\/th>\nMetal<\/th>\n<\/tr>\n<\/thead>\n
Shock absorption \/ cool cut<\/th>\nBest<\/td>\nLow<\/td>\nMedium<\/td>\n<\/tr>\n
Surface finish<\/th>\nSmoothest<\/td>\nGood<\/td>\nGood<\/td>\n<\/tr>\n
Form holding<\/th>\nMedium<\/td>\nBest<\/td>\nBest<\/td>\n<\/tr>\n
Wheel life<\/th>\nMedium<\/td>\nLower<\/td>\nLongest<\/td>\n<\/tr>\n
Max speed<\/th>\n35\u201360 m\/s<\/td>\nMedium<\/td>\nHighest<\/td>\n<\/tr>\n
Dressing frequency<\/th>\nLowest (self-sharpens)<\/td>\nMedium<\/td>\nHigh<\/td>\n<\/tr>\n
Cost<\/th>\nLowest<\/td>\nMedium<\/td>\nHigher<\/td>\n<\/tr>\n
Best for<\/th>\nTool sharpening, finishing<\/td>\nForm grinding<\/td>\nHeavy stock removal<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Selection Guide<\/h2>\n

Pick grit by the operation<\/h3>\n\n\n\n\n\n\n\n\n
Operation<\/th>\nRecommended grit<\/th>\n<\/tr>\n<\/thead>\n
Rough OD \/ stock removal<\/th>\n#80 \u2013 #120<\/td>\n<\/tr>\n
General-purpose grinding<\/th>\n#140 \u2013 #200<\/td>\n<\/tr>\n
Fine finishing<\/th>\n#240 \u2013 #320<\/td>\n<\/tr>\n
Super-finishing \/ polishing<\/th>\n#400 and finer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Pick the bond & concentration by material<\/h3>\n