{"product_id":"6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51","title":"6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51","description":"\u003ch2\u003e6805-RD Deep Groove Ball Bearing for Bike Bottom Brackets\u003c\/h2\u003e\n\u003cp\u003eUpgrade your drivetrain with this precision-engineered \u003cstrong\u003e6805-RD Bottom Bracket Bearing\u003c\/strong\u003e — a direct-fit replacement for HT2 and BB51 bottom bracket systems. Constructed from high-grade bearing steel with rubber seals and factory-applied grease, this bearing is built to handle real-world cycling demands with smooth, consistent rotation and long service life.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Numbers:\u003c\/strong\u003e 6805-RD \/ 6805RD \/ MR25376 \/ SC6805N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructure:\u003c\/strong\u003e Deep Groove Ball Bearing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bearing Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner Diameter:\u003c\/strong\u003e 25 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 37 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 6 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosures:\u003c\/strong\u003e Rubber Sealed (RD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e Grease (pre-lubricated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Load Rating (Cr):\u003c\/strong\u003e 4,150 N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStatic Load Rating (Cor):\u003c\/strong\u003e 2,382 N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Systems:\u003c\/strong\u003e HT2, BB51\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Bearing?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePrecision Fit:\u003c\/strong\u003e Exact 25×37×6 mm dimensions for a drop-in replacement on HT2 and BB51 bottom brackets\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eRubber Sealed:\u003c\/strong\u003e Keeps dirt, water, and debris out for extended bearing life\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePre-Greased:\u003c\/strong\u003e Ready to install straight out of the box — no additional lubrication needed\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eHigh Load Ratings:\u003c\/strong\u003e Handles demanding pedalling forces with a 4,150 N dynamic and 2,382 N static load rating\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eBearing Steel Construction:\u003c\/strong\u003e Superior hardness and wear resistance for miles of reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 6805-RD Bottom Bracket Bearing (25×37×6 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDue to manual measurement, please allow a tolerance of 1–3 mm.\u003c\/li\u003e\n  \u003cli\u003eActual product colour may vary slightly from images due to monitor display differences.\u003c\/li\u003e\n  \u003cli\u003eMade in Mainland China.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/mesh-ball-carry-bag-portable-net-sack-soccer-sports\"\u003eMesh Ball Carry Bag – Portable Net Sack for Soccer \u0026amp; Sports\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/health.gov\/moveyourway\" target=\"_blank\" rel=\"noopener\"\u003eHHS Move Your Way physical activity guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this 6805-RD bearing compatible with my HT2 or BB51 bottom bracket?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This bearing is specifically designed as a dedicated replacement for HT2 and BB51 bottom bracket systems. With its precise 25 mm inner diameter, 37 mm outer diameter, and 6 mm thickness, it provides an accurate fit for these bracket types.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the 6805-RD bearing come pre-lubricated and ready to install?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The bearing arrives pre-packed with grease and rubber-sealed on both sides, so it is ready to install immediately. No additional lubrication is required before fitting.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What do the model numbers MR25376, SC6805N, and 6805RD refer to?\u003c\/h4\u003e\n\u003cp\u003eA: These are all cross-reference designations for the same bearing. MR25376 describes the dimensions (25×37×6 mm), SC6805N is an alternate industry code, and 6805-RD \/ 6805RD is the standard series designation with a rubber-seal (RD) closure. All refer to this exact bearing.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this 6805-RD bearing compatible with my HT2 or BB51 bottom bracket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This bearing is specifically designed as a dedicated replacement for HT2 and BB51 bottom bracket systems. With its precise 25 mm inner diameter, 37 mm outer diameter, and 6 mm thickness, it provides an accurate fit for these bracket types.\"}}, {\"@type\": \"Question\", \"name\": \"Does the 6805-RD bearing come pre-lubricated and ready to install?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The bearing arrives pre-packed with grease and rubber-sealed on both sides, so it is ready to install immediately. 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All refer to this exact bearing.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"one size","offer_id":44169927491671,"sku":"14:350686#one size","price":11.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/S39072761e8c74f1c80a2f2eb925d1783f_1845d571-fe1e-44c5-8c97-32030fb59787.webp?v=1786802729","url":"https:\/\/axlcustomersupport.com\/products\/6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51","provider":"Axl","version":"1.0","type":"link"}