{"product_id":"dynabrade-52378","title":"DYNABRADE 3\" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52378","description":"\u003ch2\u003eDYNABRADE 3\" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52378\u003c\/h2\u003e\n\u003cul class=\"list list-icons list-primary list-borders\"\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e1 hp, 18,000 RPM, Rear Exhaust, 3\/8\"-24 Spindle Thread.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eType 1 Wheel Grinder, for cleaning metal, grinding and smoothing weld seams, removing imperfections before painting.\u003c\/li\u003e\n\u003cli\u003e\n\u003ci class=\"fa fa-caret-right\"\u003e\u003c\/i\u003e3\" Diameter, Straight Line, 1 hp, 6\" Extension, 18,000 RPM.\u003c\/li\u003e\n\u003cli\u003e\n\u003ci class=\"fa fa-caret-right\"\u003e\u003c\/i\u003eAccepts optional 3\" diameter Type 1 Wheel, with 3\/8\" center hole (maximum wheel width of 1\/2\"). Governor-controlled motor maintains RPM under heavy load; rear exhaust.\u003c\/li\u003e\n\u003cli\u003e\n\u003ci class=\"fa fa-caret-right\"\u003e\u003c\/i\u003eSafety-lock lever is included on all models.\u003c\/li\u003e\n\u003cli\u003e\n\u003ci class=\"fa fa-caret-right\"\u003e\u003c\/i\u003eStandard cushioned grip enhances operator comfort and control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications   \u003c\/h5\u003e\n\u003cstyle type=\"text\/css\"\u003e\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cly1{text-align:left;vertical-align:middle}\n.tg .tg-wa1i{font-weight:bold;text-align:center;vertical-align:middle}\n\u003c\/style\u003e\n\u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-wa1i\"\u003eAir Consumption (SCFM)\u003c\/th\u003e\n\u003cth class=\"tg-cly1\"\u003e40.0\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003ePower (hp)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eMax. RPM\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e18,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eTool Spindle Thread\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e3\/8\" - 24 Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eAir Inlet Thread\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e3\/8\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eExhaust Type\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eRear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eGL_Country Of Origin\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eHose I.D. in. (mm)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eVacuum Type\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eNon-Vacuum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eHeight in. (mm)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e3.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eLength in. (mm)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e11.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eWeight lb. (kg)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e4.41\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eWidth in. (mm)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e4.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003ePkg. Height in. (mm)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003ePkg. Length in. (mm)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e19.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003ePkg. Weight lb. (kg)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e5.29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003ePkg. Width in. (mm)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e4.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eCE Certified\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eEAN (UPC)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e0616026523784\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eEAC Certified\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eTool Style\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eStraight Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:62d49190-e6b5-4998-bda1-88624591fbb3-16\" data-turn-id-container=\"request-WEB:62d49190-e6b5-4998-bda1-88624591fbb3-16\" data-testid=\"conversation-turn-34\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"65f7139e-2266-42d0-9879-153753744a73\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"28\" data-end=\"948\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1o3ore4\" data-start=\"28\" data-end=\"144\"\u003e\n\u003cstrong data-start=\"30\" data-end=\"75\"\u003e3\" (76 mm) straight-line extension design\u003c\/strong\u003e enables access to deep, confined, and hard-to-reach grinding areas\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"14k68uj\" data-start=\"145\" data-end=\"247\"\u003eBuilt for use with \u003cstrong data-start=\"166\" data-end=\"183\"\u003eType 1 wheels\u003c\/strong\u003e, ideal for precision grinding and controlled material removal\u003c\/li\u003e\n\u003cli data-section-id=\"1kwj615\" data-start=\"248\" data-end=\"354\"\u003e\n\u003cstrong data-start=\"250\" data-end=\"283\"\u003eExtension shaft configuration\u003c\/strong\u003e improves reach for internal surfaces, welds, and recessed components\u003c\/li\u003e\n\u003cli data-section-id=\"1fa4bss\" data-start=\"355\" data-end=\"441\"\u003eDelivers \u003cstrong data-start=\"366\" data-end=\"392\"\u003estrong pneumatic power\u003c\/strong\u003e for consistent industrial grinding performance\u003c\/li\u003e\n\u003cli data-section-id=\"1yalhap\" data-start=\"442\" data-end=\"516\"\u003eIdeal for \u003cstrong data-start=\"454\" data-end=\"514\"\u003eweld blending, deburring, and internal surface finishing\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1v00lnz\" data-start=\"517\" data-end=\"604\"\u003e\n\u003cstrong data-start=\"519\" data-end=\"547\"\u003eCompact, balanced design\u003c\/strong\u003e improves handling and operator control in tight spaces\u003c\/li\u003e\n\u003cli data-section-id=\"1nsqb36\" data-start=\"605\" data-end=\"677\"\u003eDesigned for \u003cstrong data-start=\"620\" data-end=\"675\"\u003eheavy-duty fabrication and maintenance environments\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ev19hk\" data-start=\"678\" data-end=\"760\"\u003eSuitable for use on \u003cstrong data-start=\"700\" data-end=\"758\"\u003esteel, castings, structural components, and weld seams\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"7ismxa\" data-start=\"761\" data-end=\"851\"\u003eSupports \u003cstrong data-start=\"772\" data-end=\"849\"\u003eprecision grinding where standard angle or straight grinders cannot reach\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"np08ux\" data-start=\"852\" data-end=\"948\" data-is-last-node=\"\"\u003eA reliable tool for professionals needing \u003cstrong data-start=\"896\" data-end=\"948\" data-is-last-node=\"\"\u003eextended-reach, high-control grinding capability\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003ch5\u003e   \u003cbr\u003eQ\u0026amp;A    \u003c\/h5\u003e\n\u003cp data-start=\"85\" data-end=\"352\"\u003e\u003cstrong data-start=\"85\" data-end=\"129\"\u003eQ: What is the DYNABRADE 52378 used for?\u003c\/strong\u003e\u003cbr data-start=\"129\" data-end=\"132\"\u003eA: A high-speed pneumatic straight-line Type 1 wheel grinder designed for aggressive metal removal, weld seam cleanup, deburring, and surface preparation before finishing or coating. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"354\" data-end=\"553\"\u003e\u003cstrong data-start=\"354\" data-end=\"394\"\u003eQ: What type of work is it best for?\u003c\/strong\u003e\u003cbr data-start=\"394\" data-end=\"397\"\u003eA: It is commonly used in fabrication, welding, and industrial maintenance for smoothing welds, removing casting imperfections, and cleaning metal surfaces.\u003c\/p\u003e\n\u003cp data-start=\"555\" data-end=\"724\"\u003e\u003cstrong data-start=\"555\" data-end=\"601\"\u003eQ: What makes the extension design useful?\u003c\/strong\u003e\u003cbr data-start=\"601\" data-end=\"604\"\u003eA: The 6-inch extension allows access into recessed areas, pipes, and tight spaces where standard grinders cannot reach.\u003c\/p\u003e\n\u003cp data-start=\"726\" data-end=\"844\"\u003e\u003cstrong data-start=\"726\" data-end=\"752\"\u003eQ: How powerful is it?\u003c\/strong\u003e\u003cbr data-start=\"752\" data-end=\"755\"\u003eA: It uses a 1 HP pneumatic motor designed for continuous heavy-duty industrial grinding.\u003c\/p\u003e\n\u003cp data-start=\"846\" data-end=\"1019\"\u003e\u003cstrong data-start=\"846\" data-end=\"881\"\u003eQ: What is the operating speed?\u003c\/strong\u003e\u003cbr data-start=\"881\" data-end=\"884\"\u003eA: It runs at up to 18,000 RPM, enabling fast material removal and efficient surface preparation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1021\" data-end=\"1168\"\u003e\u003cstrong data-start=\"1021\" data-end=\"1060\"\u003eQ: What type of wheels does it use?\u003c\/strong\u003e\u003cbr data-start=\"1060\" data-end=\"1063\"\u003eA: It is designed for Type 1 reinforced grinding wheels (3\" diameter), typically with a 3\/8\" center hole.\u003c\/p\u003e\n\u003cp data-start=\"1170\" data-end=\"1316\"\u003e\u003cstrong data-start=\"1170\" data-end=\"1216\"\u003eQ: Is it suitable for precision finishing?\u003c\/strong\u003e\u003cbr data-start=\"1216\" data-end=\"1219\"\u003eA: No. It is an aggressive grinding tool meant for rough shaping and cleanup, not fine finishing.\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips    \u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"1j3xvct\" data-start=\"456\" data-end=\"574\"\u003e\n\u003cstrong data-start=\"458\" data-end=\"497\"\u003eUse clean, dry compressed air only:\u003c\/strong\u003e Moisture or debris rapidly wears the vane motor and reduces RPM stability.\u003c\/li\u003e\n\u003cli data-section-id=\"14z4cgf\" data-start=\"575\" data-end=\"701\"\u003e\n\u003cstrong data-start=\"577\" data-end=\"597\"\u003eLubricate daily:\u003c\/strong\u003e Add a few drops of pneumatic tool oil before use to keep internal vanes smooth and extend motor life.\u003c\/li\u003e\n\u003cli data-section-id=\"qwougk\" data-start=\"702\" data-end=\"865\"\u003e\n\u003cstrong data-start=\"704\" data-end=\"748\"\u003eMaintain correct air pressure (~90 PSI):\u003c\/strong\u003e Prevents overspeed beyond rated 18,000 RPM and protects both tool and wheel. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1tjmaod\" data-start=\"866\" data-end=\"993\"\u003e\n\u003cstrong data-start=\"868\" data-end=\"895\"\u003eMatch wheel RPM rating:\u003c\/strong\u003e Only use Type 1 wheels rated \u003cstrong data-start=\"925\" data-end=\"940\"\u003e≥18,000 RPM\u003c\/strong\u003e to avoid catastrophic wheel failure at high speed.\u003c\/li\u003e\n\u003cli data-section-id=\"nw8m29\" data-start=\"994\" data-end=\"1118\"\u003e\n\u003cstrong data-start=\"996\" data-end=\"1032\"\u003eInspect wheels before every use:\u003c\/strong\u003e Never use cracked, chipped, or dropped wheels—imbalance at this speed is dangerous.\u003c\/li\u003e\n\u003cli data-section-id=\"ue0bjf\" data-start=\"1119\" data-end=\"1269\"\u003e\n\u003cstrong data-start=\"1121\" data-end=\"1159\"\u003eCheck spindle and 3\/8\"-24 threads:\u003c\/strong\u003e Keep mounting surfaces clean and tight to avoid vibration and wobble. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"mkoxx3\" data-start=\"1270\" data-end=\"1402\"\u003e\n\u003cstrong data-start=\"1272\" data-end=\"1307\"\u003eWatch for vibration on startup:\u003c\/strong\u003e Run briefly at low throttle after wheel installation; stop immediately if imbalance is felt.\u003c\/li\u003e\n\u003cli data-section-id=\"3mjbyl\" data-start=\"1403\" data-end=\"1511\"\u003e\n\u003cstrong data-start=\"1405\" data-end=\"1433\"\u003eKeep rear exhaust clear:\u003c\/strong\u003e Ensures proper cooling and stable motor airflow during continuous grinding.\u003c\/li\u003e\n\u003cli data-section-id=\"125yds7\" data-start=\"1512\" data-end=\"1618\"\u003e\n\u003cstrong data-start=\"1514\" data-end=\"1549\"\u003eInspect air hoses and fittings:\u003c\/strong\u003e Air leaks reduce torque and can cause inconsistent RPM under load.\u003c\/li\u003e\n\u003cli data-section-id=\"q3fixr\" data-start=\"1619\" data-end=\"1739\"\u003e\n\u003cstrong data-start=\"1621\" data-end=\"1646\"\u003eClean after each use:\u003c\/strong\u003e Remove grinding dust from spindle, guard area, and housing to prevent buildup and imbalance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DYNABRADE","offers":[{"title":"Default Title","offer_id":45769236218047,"sku":"52378","price":632.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/52378.jpg?v=1782303569","url":"https:\/\/www.mybackyardzone.com\/products\/dynabrade-52378","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}