{"product_id":"10-inch-boat-trailer-keel-roller-with-bracket-assembly","title":"Wonwopn Keel Roller Assembly for Boat Trailers, 10 Inch, Galvanized Bracket and Black Rubber Roller","description":"\u003cp\u003e\u003cstrong\u003eWonwopn's 10 inch keel roller with galvanized bracket is a heavy-duty boat trailer component designed to protect and guide your boat's keel during launching and retrieval.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you're replacing a worn keel roller or outfitting a new trailer, this complete assembly pairs a full-length black rubber roller with a corrosion-resistant galvanized mounting bracket to deliver smooth, centered support for the keel. The roller's long contact surface and the bracket's slotted mounting holes let you fine-tune position and angle while the zinc-coated steel offers long-term resistance to rust in wet or marine environments.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this keel roller keep my boat centered during launching?\u003c\/h3\u003e\n\n\u003cp\u003eThe roller's 9-1\/4\" length spreads contact across more of the keel, reducing side-to-side movement as the boat rides on the trailer. The 3-3\/8\" diameter creates a stable bearing surface that cradles the hull without sharp pressure points. Combined with the bracket's adjustable slots, you can position the roller precisely along the trailer's centerline for consistent guidance.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e9-1\/4\" long rubber roller gives extended keel contact\u003c\/li\u003e\n  \u003cli\u003e3-3\/8\" diameter for steady hull support\u003c\/li\u003e\n  \u003cli\u003eBracket slot spacing and adjustability ensure accurate centering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this assembly fit my trailer and hardware setup?\u003c\/h3\u003e\n\n\u003cp\u003eThe galvanized bracket accepts a 5\/8\" shaft and features two mounting slots, each 1\/2\" wide by 5\" tall, so it can accommodate a range of bolt patterns and slight alignment changes. Slot centers are 8-3\/16\" apart, which helps when matching existing crossmembers or when relocating the roller for a better fit. Note that 1\/2\" or 7\/16\" fasteners are required but not included with the assembly.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e5\/8\" shaft compatibility for common roller pins\u003c\/li\u003e\n  \u003cli\u003e1\/2\" or 7\/16\" fasteners needed (not included)\u003c\/li\u003e\n  \u003cli\u003e8-3\/16\" spacing between slot centers to match trailer frames\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and dimensions should I expect for durability and fit?\u003c\/h3\u003e\n\n\u003cp\u003eThe roller is molded from resilient black rubber to absorb shock and resist abrasion, while the bracket is hot-dipped or zinc-galvanized steel to slow corrosion in marine settings. The bracket overall measures roughly 10-2\/16\" long by 6-3\/16\" wide, giving a solid mounting footprint that spreads load and minimizes flex under repeated launches.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRoller hole diameter: 0.65\" for proper shaft clearance\u003c\/li\u003e\n  \u003cli\u003eRoller dimensions: 9-1\/4\" long x 3-3\/8\" diameter\u003c\/li\u003e\n  \u003cli\u003eBracket: 10-2\/16\" long x 6-3\/16\" wide, galvanized finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and maintain this keel roller assembly?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward: align the bracket over your trailer crossmember, mark and drill as needed for 1\/2\" or 7\/16\" bolts, insert the roller on a 5\/8\" shaft, and secure with appropriate hardware and locking fasteners. For maintenance, rinse with fresh water after saltwater exposure and periodically check the roller hole and bracket for wear or corrosion. Replace worn rollers or pins before they compromise hull protection.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRequires 1\/2\" or 7\/16\" bolts—choose stainless or galvanized\u003c\/li\u003e\n  \u003cli\u003eRinse after saltwater use and inspect regularly\u003c\/li\u003e\n  \u003cli\u003eReplace roller or shaft if excessive wear appears\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Wonwopn keel roller and bracket assembly is built for boat owners, trailer shops, and marine service professionals who need a robust, easy-to-adjust keel support for small to medium boats. It's ideal if you want a longer rubber contact surface, simple alignment using slotted mounting, and galvanized steel durability that stands up to frequent launching and wet environments.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What bolt size do I need to install this keel roller bracket?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use 1\/2\" or 7\/16\" bolts (not included); choose stainless or galvanized fasteners for marine use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the roller and bracket dimensions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Roller: 9-1\/4\" x 3-3\/8\" with 0.65\" hole; bracket: about 10-2\/16\" x 6-3\/16\", slots 1\/2\" x 5\".\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Wonwopn","offers":[{"title":"Default Title","offer_id":48025596690593,"sku":"B0BV1H4ZTY","price":116.07,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/wonwopn-front-view-assembly_3004a335-02e1-4e23-958a-95fcd8766a40.jpg?v=1791361599","url":"https:\/\/canadiansporting.ca\/products\/10-inch-boat-trailer-keel-roller-with-bracket-assembly","provider":"Canadian Sporting","version":"1.0","type":"link"}