{"product_id":"52-x-128-sanding-belt-2-pack","title":"52\" x 128\" Sanding Belt, 2 PACK","description":"\u003cp\u003eFifty-two-inch heads with a 128-inch belt path are found on heavy calibrating and finishing lines: hardwood flooring plants, countertop and butcher-block producers, and multi-head machines that take a full-width glue-up and bring it to finish thickness in one pass through. We convert this size in \u003cstrong\u003eclosed-coat cloth aluminum oxide\u003c\/strong\u003e for surfacing and finishing heads and in \u003cstrong\u003ezirconia\u003c\/strong\u003e for the calibrating head, in grits from 36 through 400.\u003c\/p\u003e\n\u003cp\u003eEach pack holds two belts of one grain and grit. The choice between the two grains on a line like this is not about wood versus metal so much as about which head the belt is going on: zirconia where the machine is removing real stock under pressure, aluminum oxide where it is refining the surface. Converted in Anaheim, California.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eZirconia for calibrating heads under heavy load; closed-coat aluminum oxide for surfacing and finishing heads\u003c\/li\u003e\n\u003cli\u003e36 through 400 grit covers every head on a multi-head 52-inch line\u003c\/li\u003e\n\u003cli\u003e128-inch belt path: more grain per belt and longer cooling between contacts\u003c\/li\u003e\n\u003cli\u003ePoly-cotton cloth backing holds tension and tracks on long industrial belt paths\u003c\/li\u003e\n\u003cli\u003e2-pack per grit and grain; case pricing and standing orders quoted\u003c\/li\u003e\n\u003cli\u003eConverted in Anaheim, California; custom lengths for 52-inch machines in about 3 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eZirconia or aluminum oxide: which belt goes on which head of a 52-inch line?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZirconia\u003c\/strong\u003e: the calibrating-head belt. Its grain fractures under load to expose fresh cutting edges, so at 36 to 60 grit it holds a steady cut through hardwood glue lines, knots, end grain in butcher block, and dense species such as hickory, oak and maple that round over aluminum oxide quickly. It is also the belt for steel plate on lines that run metal. Zirconia needs pressure to keep fracturing; use it at 36 through 120 and switch to aluminum oxide above that.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCloth Closed Coat A\/O\u003c\/strong\u003e: aluminum oxide on poly-cotton cloth, closed coat for full grain coverage. The belt for intermediate and finishing heads on all wood, and for every head on softwood, MDF and plywood, where the material does not push back hard enough for zirconia to self-sharpen. It gives the uniform scratch that stain and finish need. Buy it at 80 through 220 for most lines and at 320 or 400 for a skim pass on veneer and clear-coat work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA typical flooring or countertop line runs 40 or 60 zirconia on the first head, then 100 and 150 aluminum oxide, then 180 or 220 aluminum oxide on the platen head. Softwood and MDF lines run aluminum oxide on every head.\u003c\/p\u003e\n\u003ch2\u003eGrit guide for calibrating and finishing on a 52-inch line\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGrit\u003c\/th\u003e\n\u003cth\u003eHead and job\u003c\/th\u003e\n\u003cth\u003eGrain to pick\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e36–40\u003c\/td\u003e\n\u003ctd\u003eCalibrating: glue-ups, rough hardwood\u003c\/td\u003e\n\u003ctd\u003eZirconia; AO on softwood or MDF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eCalibrating or dimensioning\u003c\/td\u003e\n\u003ctd\u003eZirconia on hardwood; AO otherwise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80–100\u003c\/td\u003e\n\u003ctd\u003eIntermediate surfacing\u003c\/td\u003e\n\u003ctd\u003eAO; zirconia on steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120–150\u003c\/td\u003e\n\u003ctd\u003ePre-finish\u003c\/td\u003e\n\u003ctd\u003eAO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180–220\u003c\/td\u003e\n\u003ctd\u003eFinishing head, platen\u003c\/td\u003e\n\u003ctd\u003eAO; stop at 220 under stain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e320–400\u003c\/td\u003e\n\u003ctd\u003eSkim pass: veneer, oil, clear\u003c\/td\u003e\n\u003ctd\u003eAO; no stock removal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMounting a belt this size is a two-person job: retract the tension roller fully, carry the belt on open without letting it fold, tension, and set tracking with the oscillation running so the belt swings evenly between the limit sensors. Check the inside of the belt for a direction arrow before mounting and run it that way if one is printed. For a width or length not on the site, \u003ca href=\"\/pages\/custom-sanding-belts-any-size-made-in-about-3-days\"\u003ewe convert custom belts in about 3 days\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eHow to get the most out of it\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad the zirconia head properly.\u003c\/strong\u003e Zirconia stays sharp only when it is pressed hard enough to fracture. Set the calibrating head for a real cut, 1\/64 to 1\/32 inch per pass on hardwood, and keep feed speed up. Run it too light and it glazes and burns exactly like a dull aluminum oxide belt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRun the aluminum oxide heads light.\u003c\/strong\u003e Finishing belts want shallow passes and a fast feed; the platen does the flattening, not pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNever skip more than one grit between heads.\u003c\/strong\u003e 60 to 100 to 150 to 220 works. 60 to 150 leaves calibrating scratches under a surface that looks finished until stain hits it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep extraction strong on every head.\u003c\/strong\u003e Loading is the number one killer of wide belts, and 54-inch heads move a great deal of dust. Check gates and hoses, not just the main collector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean aluminum oxide belts on the machine.\u003c\/strong\u003e A \u003ca href=\"\/products\/belt-eraser\"\u003ecrepe-rubber belt eraser\u003c\/a\u003e held lightly against the running belt pulls resin and dust out of the grain. Zirconia belts that have stopped cutting usually need more pressure, not cleaning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatch for bluing on metal.\u003c\/strong\u003e If steel comes off the zirconia head blue, the belt is dull or the pressure is too light; change it or load it, do not slow the feed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStagger narrow work\u003c\/strong\u003e across the 52-inch width so belts wear evenly instead of in a centre track.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore hanging\u003c\/strong\u003e on a rack, away from humidity and sunlight, and let cold belts come to shop temperature before mounting. A 128-inch belt left folded takes a set you cannot track out.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eOur blog covers the two most common trouble calls on lines like this: \u003ca href=\"\/blogs\/sandpaper-guides\/a-complete-guide-to-broken-sanding-belts-and-why-sanding-belts-break\"\u003ewhy wide sanding belts break\u003c\/a\u003e and \u003ca href=\"\/blogs\/sandpaper-guides\/q-a-on-wood-working-chatter\"\u003echatter marks and finish problems on wood\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eUse it for \/ don't use it for\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eUse it for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHardwood flooring, butcher block and countertop calibrating at 36 to 60 grit (zirconia)\u003c\/li\u003e\n\u003cli\u003eGlued-up panels, doors and tabletops up to 54 inches wide\u003c\/li\u003e\n\u003cli\u003eIntermediate and finishing passes on all wood species (aluminum oxide)\u003c\/li\u003e\n\u003cli\u003eSoftwood, MDF and plywood on every head (aluminum oxide)\u003c\/li\u003e\n\u003cli\u003eSteel plate and aluminum sheet on lines set up for metal (zirconia coarse, aluminum oxide fine)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDon't use it for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eZirconia on finishing heads or above 120 grit; it glazes instead of self-sharpening\u003c\/li\u003e\n\u003cli\u003eZirconia on softwood or MDF calibrating; the material does not load it enough\u003c\/li\u003e\n\u003cli\u003eWet sanding; these are dry-use belts\u003c\/li\u003e\n\u003cli\u003eRunning a belt with a lifted joint, crease or edge tear\u003c\/li\u003e\n\u003cli\u003eMachines whose belt path is 52 inches or any length other than 128\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e52\" wide x 128\" long\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAbrasive grain\u003c\/th\u003e\n\u003ctd\u003eCloth Closed Coat A\/O (aluminum oxide) or Zirconia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBacking\u003c\/th\u003e\n\u003ctd\u003ePoly-cotton cloth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoat\u003c\/th\u003e\n\u003ctd\u003eClosed coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eJoint\u003c\/th\u003e\n\u003ctd\u003eCheck inside of belt for a direction arrow before mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrits offered\u003c\/th\u003e\n\u003ctd\u003e36, 40, 60, 80, 100, 120, 150, 180, 220, 320, 400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack quantity\u003c\/th\u003e\n\u003ctd\u003e2 belts, one grain and grit per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWet or dry\u003c\/th\u003e\n\u003ctd\u003eDry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMachine type\u003c\/th\u003e\n\u003ctd\u003e52-inch industrial wide belt sanders, 144-inch belt path\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConverted in\u003c\/th\u003e\n\u003ctd\u003eAnaheim, California\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCustom sizes\u003c\/th\u003e\n\u003ctd\u003eMade to order in about 3 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould the calibrating head on a flooring line run zirconia or aluminum oxide?\u003c\/summary\u003e\n\u003cp\u003eZirconia, at 36, 40 or 60 grit. Hardwood flooring stock is dense and often glued or end-grain, and zirconia's fracturing grain keeps cutting through it where aluminum oxide rounds over within a shift. Set the head for a real depth of cut so the grain self-sharpens, and put aluminum oxide on the heads after it.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003eMy size plate says 52\" x 128\". Can I run a 144-inch belt?\u003c\/summary\u003e\n\u003cp\u003eNo. Most wide belt sanders accept about a quarter inch of length either way, and two inches is far outside that; the belt will not tension properly or will trip the tracking limits. We stock 52\" x 128\" as a separate listing, and any other length can be converted to order in about 3 days.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy does zirconia glaze on my finishing head?\u003c\/summary\u003e\n\u003cp\u003eBecause finishing heads run at light pressure and zirconia needs load to fracture and expose new edges. Without it the grain rounds over and rubs. Keep zirconia on the calibrating head at 36 to 120 grit and run closed-coat aluminum oxide on the finishing heads; it cuts cleaner at light pressure and costs less.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does closed coat mean on the aluminum oxide belt?\u003c\/summary\u003e\n\u003cp\u003eClosed coat means the cloth is fully covered with grain, with no deliberate gaps. That gives more cutting points per square inch, faster cut and longer life on hardwood, MDF, plywood and metal. Open coat leaves gaps to resist loading on very soft, resinous softwood; for most 54-inch lines closed coat plus good extraction is the right choice.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know when to change a belt on a multi-head line?\u003c\/summary\u003e\n\u003cp\u003eWatch the finish and the amp draw rather than the clock. Rising motor load, burn marks, a glazed brown surface on the belt, or scratches from an upstream head showing through the finish all mean a belt is done. Aluminum oxide belts can often be recovered once with a crepe eraser; zirconia that has stopped cutting needs more pressure or replacement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many belts per pack, and can you supply a full line by the case?\u003c\/summary\u003e\n\u003cp\u003eEach pack holds two 54\" x 144\" belts of one grain and one grit. Production lines usually order several grits by the case, and we quote case pricing and recurring shipments by phone at 714-646-3299 or email at sales@maverickabrasives.com. Orders over $200 ship free, and unused belts in original packaging can be returned within 30 days.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eRelated products and guides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/sanding-belts\"\u003eAll sanding belts\u003c\/a\u003e\u003ca href=\"\/products\/54-x-142-sanding-belt-2-pack\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/custom-sanding-belts-any-size-made-in-about-3-days\"\u003eCustom sanding belts, any size, made in about 3 days\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Maverick Abrasives","offers":[{"title":"Cloth Closed Coat A\/O \/ 36 Grit","offer_id":52605073031458,"sku":null,"price":431.08,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 40 Grit","offer_id":52605073064226,"sku":null,"price":430.5,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 60 Grit","offer_id":52605073096994,"sku":null,"price":420.0,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 80 Grit","offer_id":52605073129762,"sku":null,"price":409.5,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 100 Grit","offer_id":52605073162530,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 120 Grit","offer_id":52605073195298,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 150 Grit","offer_id":52605073228066,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 180 Grit","offer_id":52605073260834,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 220 Grit","offer_id":52605073293602,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 320 Grit","offer_id":52605073326370,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Cloth Closed Coat A\/O \/ 400 Grit","offer_id":52605073359138,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Zirconia \/ 36 Grit","offer_id":52605073391906,"sku":null,"price":705.55,"currency_code":"USD","in_stock":true},{"title":"Zirconia \/ 40 Grit","offer_id":52605073424674,"sku":null,"price":625.67,"currency_code":"USD","in_stock":true},{"title":"Zirconia \/ 60 Grit","offer_id":52605073457442,"sku":null,"price":539.15,"currency_code":"USD","in_stock":true},{"title":"Zirconia \/ 80 Grit","offer_id":52605073490210,"sku":null,"price":505.87,"currency_code":"USD","in_stock":true},{"title":"Zirconia \/ 100 Grit","offer_id":52605073522978,"sku":null,"price":465.92,"currency_code":"USD","in_stock":true},{"title":"Zirconia \/ 120 Grit","offer_id":52605073555746,"sku":null,"price":465.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0061\/5130\/7367\/products\/maverick-abrasives-cloth-closed-coat-a-o-36-grit-54-x-144-sanding-belt-2-pack-38636425249008.jpg?v=1745619372","url":"https:\/\/www.maverickabrasives.com\/products\/52-x-128-sanding-belt-2-pack","provider":"Maverick Abrasives","version":"1.0","type":"link"}