{"product_id":"dynabrade-52377","title":"DYNABRADE 3\" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52377","description":"\u003ch2\u003eDYNABRADE 3\" (76 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder - 52377\u003c\/h2\u003e\n\u003cul class=\"list list-icons list-primary list-borders\"\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e15,000 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, 15,000 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-amwm{font-weight:bold;text-align:center;vertical-align:top}\n\u003c\/style\u003e\n\u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-amwm\"\u003eAir Consumption (SCFM)\u003c\/th\u003e\n\u003cth class=\"tg-cly1\"\u003e39.0\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-amwm\"\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-amwm\"\u003eMax. RPM\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e15,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\u003eMotor Type\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eRotary Vane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\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-amwm\"\u003eEAN (UPC)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e0616026523777\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-amwm\"\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-amwm\"\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\u003cul\u003e\n\u003cli data-section-id=\"1e062n3\" data-start=\"27\" data-end=\"234\"\u003eThe \u003cstrong data-start=\"33\" data-end=\"108\"\u003eDynabrade 58446 8\" (203 mm) Two-Hand Gear-Driven Sander, Central Vacuum\u003c\/strong\u003e is a \u003cstrong data-start=\"114\" data-end=\"157\"\u003ehigh-torque industrial finishing sander\u003c\/strong\u003e built for aggressive leveling and controlled surface prep on large panels.\u003c\/li\u003e\n\u003cli data-section-id=\"r9s5my\" data-start=\"235\" data-end=\"481\"\u003eUses a \u003cstrong data-start=\"244\" data-end=\"297\"\u003eplanetary gear-driven system (~900 RPM max speed)\u003c\/strong\u003e that delivers \u003cstrong data-start=\"312\" data-end=\"348\"\u003estrong, consistent cutting force\u003c\/strong\u003e, making it ideal for removing filler, epoxy, coatings, and weld highs on demanding surfaces. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vlfeij\" data-start=\"482\" data-end=\"738\"\u003eThe \u003cstrong data-start=\"488\" data-end=\"513\"\u003ecentral vacuum design\u003c\/strong\u003e connects to an external dust extraction system, helping \u003cstrong data-start=\"570\" data-end=\"607\"\u003epull dust away from the air motor\u003c\/strong\u003e, improving tool life and maintaining consistent performance in heavy sanding environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zlma7k\" data-start=\"739\" data-end=\"961\"\u003eEquipped with an \u003cstrong data-start=\"758\" data-end=\"778\"\u003e8\" hook-face pad\u003c\/strong\u003e, it provides \u003cstrong data-start=\"792\" data-end=\"855\"\u003ewide surface coverage while maintaining controlled pressure\u003c\/strong\u003e, especially useful for automotive body panels and composite work. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1a5idwi\" data-start=\"962\" data-end=\"1131\"\u003eRuns at \u003cstrong data-start=\"972\" data-end=\"1005\"\u003e900 RPM with a ~0.45 HP motor\u003c\/strong\u003e, balancing torque and control for \u003cstrong data-start=\"1040\" data-end=\"1090\"\u003epre-finish leveling rather than fine polishing\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"35eyf8\" data-start=\"1132\" data-end=\"1282\"\u003eThe \u003cstrong data-start=\"1138\" data-end=\"1157\"\u003etwo-hand design\u003c\/strong\u003e improves stability and reduces operator fatigue, especially during long sessions on large horizontal or vertical surfaces.\u003c\/li\u003e\n\u003cli data-section-id=\"kipww4\" data-start=\"1283\" data-end=\"1458\"\u003eBuilt with a \u003cstrong data-start=\"1298\" data-end=\"1344\"\u003elow-vibration, rear-exhaust pneumatic body\u003c\/strong\u003e, making it suitable for continuous-duty industrial environments like fabrication shops and body repair centers.\u003c\/li\u003e\n\u003cli data-section-id=\"ntwe5c\" data-start=\"1460\" data-end=\"1643\" data-is-last-node=\"\"\u003eBest suited for professionals who need a \u003cstrong data-start=\"1503\" data-end=\"1595\"\u003ehigh-power, dust-controlled sanding system for leveling, shaping, and heavy surface prep\u003c\/strong\u003e, rather than final finishing or detailing work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e   \u003cbr\u003eQ\u0026amp;A  \u003c\/h5\u003e\n\u003cp data-start=\"0\" data-end=\"280\"\u003e\u003cstrong data-start=\"0\" data-end=\"92\"\u003eQ: What is the Dynabrade 52377 3\" Straight-Line Type 1 Extension Wheel Grinder used for?\u003c\/strong\u003e\u003cbr data-start=\"92\" data-end=\"95\"\u003eA: It is a \u003cstrong data-start=\"106\" data-end=\"159\"\u003ehigh-speed pneumatic straight-line grinder (1 HP)\u003c\/strong\u003e designed for \u003cstrong data-start=\"173\" data-end=\"250\"\u003eheavy-duty metal grinding, weld seam cleanup, deburring, and surface prep\u003c\/strong\u003e using Type 1 abrasive wheels.\u003c\/p\u003e\n\u003cp data-start=\"282\" data-end=\"494\"\u003e\u003cstrong data-start=\"282\" data-end=\"325\"\u003eQ: What does the “extension” design do?\u003c\/strong\u003e\u003cbr data-start=\"325\" data-end=\"328\"\u003eA: The \u003cstrong data-start=\"335\" data-end=\"361\"\u003e6-inch extension shaft\u003c\/strong\u003e allows access into \u003cstrong data-start=\"381\" data-end=\"423\"\u003edeep, recessed, or hard-to-reach areas\u003c\/strong\u003e, such as inside fabricated assemblies, channels, and tight weld zones.\u003c\/p\u003e\n\u003cp data-start=\"496\" data-end=\"752\"\u003e\u003cstrong data-start=\"496\" data-end=\"535\"\u003eQ: What are its key specifications?\u003c\/strong\u003e\u003cbr data-start=\"535\" data-end=\"538\"\u003eA: It typically features a \u003cstrong data-start=\"565\" data-end=\"663\"\u003e3\" wheel capacity, 15,000 RPM free speed, 1 HP motor, rear exhaust, and 3\/8\"-24 spindle thread\u003c\/strong\u003e, with high air consumption (~39 SCFM at 90 PSI). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"754\" data-end=\"932\"\u003e\u003cstrong data-start=\"754\" data-end=\"794\"\u003eQ: What materials can it be used on?\u003c\/strong\u003e\u003cbr data-start=\"794\" data-end=\"797\"\u003eA: It is used on \u003cstrong data-start=\"814\" data-end=\"891\"\u003esteel, stainless steel, cast iron, weldments, and heavy fabrication parts\u003c\/strong\u003e where fast material removal is required.\u003c\/p\u003e\n\u003cp data-start=\"934\" data-end=\"1072\"\u003e\u003cstrong data-start=\"934\" data-end=\"975\"\u003eQ: Is it for finishing or rough work?\u003c\/strong\u003e\u003cbr data-start=\"975\" data-end=\"978\"\u003eA: It is mainly for \u003cstrong data-start=\"998\" data-end=\"1038\"\u003eaggressive grinding and weld removal\u003c\/strong\u003e, not fine finishing or polishing.\u003c\/p\u003e\n\u003cp data-start=\"1074\" data-end=\"1278\"\u003e\u003cstrong data-start=\"1074\" data-end=\"1134\"\u003eQ: What makes it powerful compared to standard grinders?\u003c\/strong\u003e\u003cbr data-start=\"1134\" data-end=\"1137\"\u003eA: The \u003cstrong data-start=\"1144\" data-end=\"1196\"\u003e1 HP air motor + straight-line high-speed design\u003c\/strong\u003e delivers strong, consistent cutting power under load for industrial applications.\u003c\/p\u003e\n\u003ch5\u003e \u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:d1c57d9a-81fe-4706-98e3-e03b671e38ee-70\" data-is-intersecting=\"true\"\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 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:d1c57d9a-81fe-4706-98e3-e03b671e38ee-70\" data-turn-id-container=\"request-WEB:d1c57d9a-81fe-4706-98e3-e03b671e38ee-70\" data-testid=\"conversation-turn-70\" 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=\"b2f1e0af-ea4d-443f-9edb-df04eb54ab82\" 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=\"118\" data-end=\"1044\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"s2wh9\" data-start=\"118\" data-end=\"214\"\u003eLubricate air motor daily with pneumatic tool oil to maintain smooth high-speed performance.\u003c\/li\u003e\n\u003cli data-section-id=\"1abmgdw\" data-start=\"215\" data-end=\"307\"\u003eUse clean, dry compressed air at recommended PSI to prevent internal wear and corrosion.\u003c\/li\u003e\n\u003cli data-section-id=\"xdd3ym\" data-start=\"308\" data-end=\"418\"\u003eInspect Type 1 grinding wheels before use; replace any cracked, chipped, or unbalanced wheels immediately.\u003c\/li\u003e\n\u003cli data-section-id=\"sh63qm\" data-start=\"419\" data-end=\"509\"\u003eCheck extension shaft, spindle, and wheel mounting for tightness, alignment, and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"ghggt3\" data-start=\"510\" data-end=\"601\"\u003eKeep air inlet and exhaust ports clear of grinding dust for proper airflow and cooling.\u003c\/li\u003e\n\u003cli data-section-id=\"ca57hn\" data-start=\"602\" data-end=\"696\"\u003eEnsure all hoses and fittings are leak-free to maintain consistent RPM and grinding power.\u003c\/li\u003e\n\u003cli data-section-id=\"8zo1jq\" data-start=\"697\" data-end=\"777\"\u003eDo not exceed rated wheel speed to prevent wheel failure and safety hazards.\u003c\/li\u003e\n\u003cli data-section-id=\"at5gsg\" data-start=\"778\" data-end=\"877\"\u003eMonitor vibration during operation; excessive vibration may indicate imbalance or bearing wear.\u003c\/li\u003e\n\u003cli data-section-id=\"oqufk5\" data-start=\"878\" data-end=\"948\"\u003eClean tool body after use to remove metal dust and debris buildup.\u003c\/li\u003e\n\u003cli data-section-id=\"1m2kdbg\" data-start=\"949\" data-end=\"1044\" data-is-last-node=\"\"\u003eStore in a dry, clean environment to protect internal components from moisture and corrosion\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\u003c\/div\u003e","brand":"DYNABRADE","offers":[{"title":"Default Title","offer_id":45769236381887,"sku":"52377","price":632.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/52377.jpg?v=1782303563","url":"https:\/\/www.mybackyardzone.com\/products\/dynabrade-52377","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}