{"product_id":"ralzaoto-trailer-wheel-hub-bearing-kit-l44643-l44610-for-1-axles-2-set-seals-dust-covers","title":"RALZAOTO Trailer Wheel Hub Bearing Kit L44643\/L44610 for 1\" Axles — 2-Set, Seals \u0026 Dust Covers","description":"\u003cp\u003e\u003cstrong\u003eRALZAOTO 2-set trailer wheel hub bearings kit supplies the exact L44643 inner and L44610 outer bearings, seals, dust covers and cotter pins needed for 1\" (1.000\") trailer axles rated around 2,000 lb.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete bearing kit is manufactured to fit common 1\" trailer spindles and is built for dependable rotation, reduced friction and straightforward installation. The package includes two full sets of bearings — four L44643 inner bearings and four L44610 outer bearings total — along with two 12192TB grease seals, two dust covers and two cotter pins so you can service both sides of a tandem axle or two separate single-axle trailers in one job. Components are pre-tested for noise and vibration to help deliver consistent, long-lasting performance when mounted and greased correctly.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these bearings improve trailer wheel rotation?\u003c\/h3\u003e\n\u003cp\u003eThese precision-manufactured tapered bearings support radial and axial loads to help your hub turn smoothly with less heat and wear. Properly installed and lubricated bearings reduce the amount of metal-on-metal contact and lower friction inside the hub.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded inner L44643 and outer L44610 bearings sized to OEM tolerances.\u003c\/li\u003e\n  \u003cli\u003eTaper design balances axial and radial forces for stable rotation.\u003c\/li\u003e\n  \u003cli\u003eFactory-tested for noise and vibration to help ensure quiet operation.\u003c\/li\u003e\n  \u003cli\u003eCompatible grease seals keep lubrication in and contaminants out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly is in the kit and why each part matters?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains the bearings, 12192TB grease seals, dust covers and cotter pins required to rebuild a hub assembly on 1\" spindles. Each component plays a role in maintaining hub alignment, sealing grease, and securing the wheel-end assembly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4 × L44643 (I.D. 1.000\") inner bearings: handle axial thrust and fit the spindle cone.\u003c\/li\u003e\n  \u003cli\u003e4 × L44610 (O.D. 1.980\") outer bearings: support radial load at the hub cup.\u003c\/li\u003e\n  \u003cli\u003e2 × 12192TB seals (1.249\" × 1.980\"): prevent grease loss and keep out water\/silt.\u003c\/li\u003e\n  \u003cli\u003e2 × dust covers and 2 × cotter pins: protect the nut assembly and lock the adjustment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install this bearing kit on a 1\" trailer axle?\u003c\/h3\u003e\n\u003cp\u003eInstalling the kit follows standard wheel-bearing service steps: remove the wheel and hub, extract old bearings and seals, clean the assembly, install new bearings, pack with quality bearing grease, and set endplay before securing the nut and cotter pin. Follow vehicle-specific torque and endplay specs for safe operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemove wheel and hub; clean spindle and hub thoroughly.\u003c\/li\u003e\n  \u003cli\u003eInspect spindle, cups, and races for wear; replace if damaged.\u003c\/li\u003e\n  \u003cli\u003ePack bearings with grease, insert inner then outer bearings and install seals.\u003c\/li\u003e\n  \u003cli\u003eAdjust preload\/endplay, install dust cover and secure with cotter pin per spec.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable are the parts and what maintenance do they need?\u003c\/h3\u003e\n\u003cp\u003eParts are made from hardened bearing steel and corrosion-resistant materials for long service life under normal towing use. Regular inspection and periodic greasing are the best ways to extend longevity and prevent premature failure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHardened bearing surfaces resist wear from rotational loads.\u003c\/li\u003e\n  \u003cli\u003eSeals reduce contamination, slowing corrosion and grease loss.\u003c\/li\u003e\n  \u003cli\u003eRecommended: repack bearings and inspect at each wheel service interval.\u003c\/li\u003e\n  \u003cli\u003eRALZAOTO offers 12 months support if issues arise after purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This RALZAOTO kit is aimed at DIYers, trailer service shops and boat owners who need a complete, ready-to-install replacement for 1\" (1.000\") trailer axles — ideal for single-axle trailers or for servicing both sides of a tandem axle. Choose this set when you need matching inner and outer bearings, correct-size seals and the small hardware to secure the hub, all in a single purchase to restore smooth, safe wheel rotation.\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: Are these bearings the right fit for a 1\" trailer spindle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes L44643 (1.000\" I.D.) and L44610 (1.980\" O.D.) bearings made for 1\" trailer spindles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include seals and hardware for both sides?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It contains two 12192TB seals, two dust covers and two cotter pins, plus four inner and four outer bearings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RALZAOTO","offers":[{"title":"Default Title","offer_id":48084350566558,"sku":"B0FBRFLPRZ","price":31.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ralzaoto-front-packaging-kits.jpg?v=1785851390","url":"https:\/\/northtrailauto.ca\/products\/ralzaoto-trailer-wheel-hub-bearing-kit-l44643-l44610-for-1-axles-2-set-seals-dust-covers","provider":"North Trail Auto","version":"1.0","type":"link"}