{"product_id":"stanley-gr29310-underwater-hydraulic-grinder","title":"Stanley Underwater Hydraulic Grinder - GR29310","description":"\u003ch2\u003e\u003cspan\u003eStanley Underwater Hydraulic Grinder - GR29310\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe GR29 is a right angle grinder that can be used for grinding and cleaning in underwater applications with a variety of wheels, brushes, and attachments. The high torque gear motor drives a standard 5\/8-11” threaded spindle. A 9” adjustable wheel guard, two position assist handle and trigger guard are standard.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"r1rgap\" data-start=\"32\" data-end=\"217\"\u003e\n\u003cstrong data-start=\"34\" data-end=\"82\"\u003eDesigned for Underwater Surface Preparation:\u003c\/strong\u003e Built for commercial diving, offshore maintenance, and marine construction where reliable grinding and material removal are essential.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1fvepoa\" data-start=\"218\" data-end=\"384\"\u003e\n\u003cstrong data-start=\"220\" data-end=\"255\"\u003ePowerful Hydraulic Performance:\u003c\/strong\u003e Delivers consistent grinding power for smoothing welds, removing corrosion, and preparing metal or concrete surfaces underwater.\u003c\/li\u003e\n\u003cli data-section-id=\"1gm3iuc\" data-start=\"385\" data-end=\"540\"\u003e\n\u003cstrong data-start=\"387\" data-end=\"415\"\u003eExcellent Diver Control:\u003c\/strong\u003e Ergonomic handles and responsive trigger provide precise operation and improved stability, even while wearing diving gloves.\u003c\/li\u003e\n\u003cli data-section-id=\"1f4ter7\" data-start=\"541\" data-end=\"695\"\u003e\n\u003cstrong data-start=\"543\" data-end=\"571\"\u003eMarine-Grade Durability:\u003c\/strong\u003e Corrosion-resistant construction is engineered to withstand continuous exposure to saltwater and harsh subsea environments.\u003c\/li\u003e\n\u003cli data-section-id=\"gxeie5\" data-start=\"696\" data-end=\"894\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"698\" data-end=\"733\"\u003eProfessional-Grade Reliability:\u003c\/strong\u003e Stanley's proven hydraulic drive system ensures dependable performance, low maintenance, and long service life for demanding commercial underwater applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a43165d-aa80-83ee-b57c-b88d9f658b46-11\" 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-6a43165d-aa80-83ee-b57c-b88d9f658b46-11\" data-turn-id-container=\"request-6a43165d-aa80-83ee-b57c-b88d9f658b46-11\" 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=\"5b40001b-5679-47d3-a7bd-ac3f3cf17e38\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" 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\" 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\u003cp data-start=\"32\" data-end=\"324\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"32\" data-end=\"105\"\u003eQ: What is the Stanley GR29310 Underwater Hydraulic Grinder used for?\u003c\/strong\u003e\u003cbr data-start=\"105\" data-end=\"108\"\u003e\u003cstrong data-start=\"108\" data-end=\"114\"\u003eA:\u003c\/strong\u003e It is a heavy-duty hydraulic grinder designed for \u003cstrong data-start=\"165\" data-end=\"251\"\u003eunderwater grinding, weld preparation, surface cleaning, rust removal, and cutting\u003c\/strong\u003e in commercial diving applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"326\" data-end=\"570\"\u003e\u003cstrong data-start=\"326\" data-end=\"382\"\u003eQ: What hydraulic flow and pressure does it require?\u003c\/strong\u003e\u003cbr data-start=\"382\" data-end=\"385\"\u003e\u003cstrong data-start=\"385\" data-end=\"391\"\u003eA:\u003c\/strong\u003e It operates at \u003cstrong data-start=\"407\" data-end=\"430\"\u003e7–9 GPM (26–34 LPM)\u003c\/strong\u003e with a working pressure of \u003cstrong data-start=\"458\" data-end=\"491\"\u003e1,500–2,000 PSI (105–140 bar)\u003c\/strong\u003e. The optimum flow is \u003cstrong data-start=\"513\" data-end=\"531\"\u003e8 GPM (30 LPM)\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"572\" data-end=\"792\"\u003e\u003cstrong data-start=\"572\" data-end=\"620\"\u003eQ: What wheel size does the grinder support?\u003c\/strong\u003e\u003cbr data-start=\"620\" data-end=\"623\"\u003e\u003cstrong data-start=\"623\" data-end=\"629\"\u003eA:\u003c\/strong\u003e The GR29310 is designed for \u003cstrong data-start=\"658\" data-end=\"693\"\u003e9-inch (230 mm) grinding wheels\u003c\/strong\u003e, making it suitable for demanding underwater grinding tasks. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"794\" data-end=\"1010\"\u003e\u003cstrong data-start=\"794\" data-end=\"832\"\u003eQ: Does it include a safety guard?\u003c\/strong\u003e\u003cbr data-start=\"832\" data-end=\"835\"\u003e\u003cstrong data-start=\"835\" data-end=\"841\"\u003eA:\u003c\/strong\u003e Yes. It features an \u003cstrong data-start=\"862\" data-end=\"888\"\u003eadjustable wheel guard\u003c\/strong\u003e to help improve operator safety while maintaining clear visibility during grinding. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1012\" data-end=\"1234\"\u003e\u003cstrong data-start=\"1012\" data-end=\"1070\"\u003eQ: Is it suitable for continuous underwater operation?\u003c\/strong\u003e\u003cbr data-start=\"1070\" data-end=\"1073\"\u003e\u003cstrong data-start=\"1073\" data-end=\"1079\"\u003eA:\u003c\/strong\u003e Yes. Its rugged hydraulic motor is built for reliable, continuous-duty performance in harsh underwater environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1236\" data-end=\"1431\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1236\" data-end=\"1280\"\u003eQ: Are hose whips and couplers included?\u003c\/strong\u003e\u003cbr data-start=\"1280\" data-end=\"1283\"\u003e\u003cstrong data-start=\"1283\" data-end=\"1289\"\u003eA:\u003c\/strong\u003e The grinder includes \u003cstrong data-start=\"1311\" data-end=\"1325\"\u003ehose whips\u003c\/strong\u003e, while \u003cstrong data-start=\"1333\" data-end=\"1392\"\u003equick-disconnect hydraulic couplers are sold separately\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:6cfd1a9d-9b2f-4d12-a6cb-eb4e877cfad4-13\" 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:6cfd1a9d-9b2f-4d12-a6cb-eb4e877cfad4-13\" data-turn-id-container=\"request-WEB:6cfd1a9d-9b2f-4d12-a6cb-eb4e877cfad4-13\" data-testid=\"conversation-turn-18\" 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=\"54ece433-eca8-4004-894c-f01a822a0053\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" 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=\"0\" data-end=\"526\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"17firby\" data-start=\"0\" data-end=\"63\"\u003eRinse thoroughly with fresh water after every underwater use.\u003c\/li\u003e\n\u003cli data-section-id=\"pwbrn7\" data-start=\"64\" data-end=\"119\"\u003eRemove salt, sand, and grinding debris from the tool.\u003c\/li\u003e\n\u003cli data-section-id=\"hvbb6h\" data-start=\"120\" data-end=\"194\"\u003eInspect hydraulic hoses, fittings, seals, and couplers before operation.\u003c\/li\u003e\n\u003cli data-section-id=\"1pqgjav\" data-start=\"195\" data-end=\"261\"\u003eCheck the grinding wheel, guard, and spindle for wear or damage.\u003c\/li\u003e\n\u003cli data-section-id=\"1k0m1eg\" data-start=\"262\" data-end=\"332\"\u003eVerify hydraulic flow and pressure meet manufacturer specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"u7k6c3\" data-start=\"333\" data-end=\"389\"\u003eKeep moving parts clean and lubricated as recommended.\u003c\/li\u003e\n\u003cli data-section-id=\"15q56d6\" data-start=\"390\" data-end=\"458\"\u003eTighten loose fasteners and replace worn grinding wheels promptly.\u003c\/li\u003e\n\u003cli data-section-id=\"1bz0fh3\" data-start=\"459\" data-end=\"526\" data-is-last-node=\"\"\u003eStore the grinder clean, dry, and with hydraulic ports protected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Stanley","offers":[{"title":"Default Title","offer_id":45800526282943,"sku":"GR29310","price":2079.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/GR29Collections_2ce7c9f6-ffe1-446d-87ab-44fdc9ae8016.jpg?v=1782821365","url":"https:\/\/www.mybackyardzone.com\/products\/stanley-gr29310-underwater-hydraulic-grinder","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}