{"product_id":"modular-wheel-hub-system-tre-44mm-bearing-copy","title":"Lightning Series Integrated Wheel Hub Core - 55mm","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cspan role=\"text\"\u003e\u003cstrong\u003eLightning Series Integrated Wheel Hub Core - 55mm\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003ch3\u003e18T Lightning Series Tripod | 55mm Bearing Journal\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0725\/6761\/9875\/files\/Hub_Assy_55mm_Bearings_Integrated_18T_Lightning_Tripod.STEP?v=1787879110\"\u003eDownload STEP model here\u003c\/a\u003e\u003c\/p\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStandard Core. Custom Interface. Custom Bearing Architecture.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eThe TRE Lightning Series 55mm Integrated Wheel Hub Core gives Formula SAE, Formula Student, Baja, and other lightweight vehicle designers a compact starting point for a fully integrated driven wheel end.\u003c\/p\u003e\n\u003cp\u003eUnlike our 34mm and 44mm Modular Wheel Hub Systems, which are designed around specific sealed wheel-bearing units, the Lightning 55mm system intentionally leaves the \u003cstrong\u003ebearing type and upright architecture open to the team\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTRE provides the difficult rotating core design: an integrated wheel hub and Lightning Series outboard tripod housing with a 55 mm bearing journal, controlled structural geometry, tab lock washer, and matching bearing clamping nut.\u003c\/p\u003e\n\u003cp\u003eThe team selects the bearing arrangement and designs the upright, wheel interface, brake rotor interface, and final corner packaging around its own vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe tripod housing, wheel hub, and bearing core become one component. Everything around it can be optimized for your car.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIntegrated Lightning Series Tripod Housing\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eThe 55mm hub is designed around TRE's compact \u003cstrong\u003e18-tooth Lightning Series FSAE tripod\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eInstead of transferring torque through a separate outboard tulip, stub shaft, and wheel-hub spline, the tripod operates directly inside the rotating wheel hub. Drive torque passes from the tripod rollers directly into the hub body.\u003c\/p\u003e\n\u003cp\u003eThis integrated architecture can eliminate several components from a conventional driven wheel end:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeparate outboard tripod housing or tulip\u003c\/li\u003e\n\u003cli\u003eStub axle between the tripod housing and wheel hub\u003c\/li\u003e\n\u003cli\u003eMale\/female wheel-hub spline\u003c\/li\u003e\n\u003cli\u003eAdditional retention hardware associated with those interfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe result is a compact torque path and gives teams the opportunity to reduce component count, rotating mass, package length, and upright size.\u003c\/p\u003e\n\u003cp\u003eThe Lightning Series tripod was developed specifically around smaller FSAE drivetrain packages. Its compact joint envelope makes a 55 mm bearing journal practical while maintaining the plunge and articulation characteristics of a conventional tripod joint. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eChoose Your Own Bearing Architecture\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Lightning 55mm hub uses a \u003cstrong\u003e55 mm bearing journal\u003c\/strong\u003e, but TRE does not require a particular wheel bearing.\u003c\/p\u003e\n\u003cp\u003eThat is deliberate.\u003c\/p\u003e\n\u003cp\u003eDepending on the team's load requirements, upright design, manufacturing capability, stiffness targets, available space, and design philosophy, the hub can be integrated with several different bearing approaches.\u003c\/p\u003e\n\u003cp\u003eTwo simple deep-groove ball-bearing examples are:\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e6911-2RS \/ 61911-2RS1 Family\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNominal dimensions: \u003cstrong\u003e55 × 80 × 13 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e16011 Family\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNominal dimensions: \u003cstrong\u003e55 × 90 × 11 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBearing specifications, seals, internal clearance classes, tolerances, load ratings, and available suffixes vary between manufacturers. Teams should always design from the actual bearing manufacturer's data rather than assuming that matching boundary dimensions mean identical performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOther Bearing Types\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe hub is not limited to standard deep-groove ball bearings.\u003c\/p\u003e\n\u003cp\u003eTeams may choose to design around:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAngular-contact ball bearings\u003c\/li\u003e\n\u003cli\u003eTapered roller bearings\u003c\/li\u003e\n\u003cli\u003eHigher-precision bearing classes\u003c\/li\u003e\n\u003cli\u003eDifferent internal-clearance or preload specifications\u003c\/li\u003e\n\u003cli\u003eOther 55 mm-ID bearing arrangements that fit the available hub geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows the wheel bearing to become an intentional part of the suspension design rather than simply a catalog component selected after the upright is already designed.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e43mm Bearing Spread\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eThe standard Lightning 55mm hub geometry provides a \u003cstrong\u003e43 mm outside-to-outside bearing spacing\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eRather than placing two bearings directly beside one another, the separated arrangement gives the team a useful structural base for supporting wheel overturning moments and developing wheel-end stiffness.\u003c\/p\u003e\n\u003cp\u003eFinal corner stiffness still depends on the complete system:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBearing type and internal geometry\u003c\/li\u003e\n\u003cli\u003eBearing spacing\u003c\/li\u003e\n\u003cli\u003eUpright stiffness\u003c\/li\u003e\n\u003cli\u003eHub stiffness\u003c\/li\u003e\n\u003cli\u003eBearing fits\u003c\/li\u003e\n\u003cli\u003eWheel offset\u003c\/li\u003e\n\u003cli\u003eBearing preload or operating clearance\u003c\/li\u003e\n\u003cli\u003eMaterial and temperature effects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe STEP model shows the standard TRE hub geometry and bearing locations so the team can design the upright around the actual rotating assembly.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWe Recommend an Inner-Race Bearing Spacer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eTRE strongly recommends using a \u003cstrong\u003eprecision spacer between the two bearing inner races\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe spacer allows the hub, bearing inner races, spacer, and supplied clamping nut to act as a controlled structural stack.\u003c\/p\u003e\n\u003cp\u003eA properly engineered spacer can help:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEstablish repeatable bearing clamping\u003c\/li\u003e\n\u003cli\u003eControl the relative axial position of the bearing inner races\u003c\/li\u003e\n\u003cli\u003eImprove wheel-end stiffness\u003c\/li\u003e\n\u003cli\u003eReduce sensitivity to assembly torque\u003c\/li\u003e\n\u003cli\u003ePrevent inappropriate axial loading of the bearings\u003c\/li\u003e\n\u003cli\u003eProduce a more repeatable service assembly\u003c\/li\u003e\n\u003cli\u003eHelp achieve the intended bearing clearance or preload\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe spacer should be treated as a precision engineering component. Its final length depends on the selected bearings, upright geometry, fits, tolerances, desired operating clearance or preload, materials, and temperatures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo not simply tighten the clamping nut until the bearings \"feel tight.\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBearing Preload Matters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eSKF Racing has published an excellent short technical note specifically addressing wheel-bearing preload in racing applications.\u003c\/p\u003e\n\u003cp\u003eSKF identifies preload and clearance as important contributors to \u003cstrong\u003ebearing life, camber stiffness, and friction\u003c\/strong\u003e. Their racing guidance notes that light preload is commonly used to improve load distribution, but that excessive preload causes bearing life to decrease as friction and operating temperature rise. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTheir wheel-end example is particularly relevant to this system because it shows a pair of separated bearings with a hub, upright, inner spacer, and retaining nut - essentially the same design problem teams are solving with the Lightning 55mm core. SKF identifies several factors that must be considered together when determining the actual preload:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBearing, hub, upright, and spacer stiffness\u003c\/li\u003e\n\u003cli\u003eHub, upright, and spacer materials\u003c\/li\u003e\n\u003cli\u003eBearing fits\u003c\/li\u003e\n\u003cli\u003eNut torque\u003c\/li\u003e\n\u003cli\u003eMounting and operating temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKF also emphasizes that preload cannot simply be directly measured after assembly in the same way that endplay can. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRecommended Reading\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSKF Racing - Wheel Bearing Preload in Racing Applications\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0725\/6761\/9875\/files\/SKF_Bearing_preload.pdf?v=1787879120\"\u003e[DOWNLOAD \/ VIEW SKF TECHNOTE]\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eFor teams doing a more detailed bearing analysis, SKF's current bearing-preload technical publication also discusses using intermediate rings, shims, and spacers between bearing inner rings to establish the desired preload or operating clearance. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDesigned Around Your Wheel and Brake Package\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eAs with the TRE 34mm and 44mm Modular Wheel Hub Systems, the wheel side of the Lightning hub is intentionally provided as a configurable design region rather than forcing the team into a predetermined wheel bolt pattern, brake rotor, or wheel offset.\u003c\/p\u003e\n\u003cp\u003eWithin the approved design envelope outboard of the bearing system, teams can define features including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWheel bolt or stud pattern\u003c\/li\u003e\n\u003cli\u003eCenter pilot diameter\u003c\/li\u003e\n\u003cli\u003eWheel mounting-face location\u003c\/li\u003e\n\u003cli\u003eBrake rotor bolt pattern\u003c\/li\u003e\n\u003cli\u003eRotor pilot\u003c\/li\u003e\n\u003cli\u003eRotor offset\u003c\/li\u003e\n\u003cli\u003eFlange outside diameter and profile\u003c\/li\u003e\n\u003cli\u003eAppropriate lightening geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows the Lightning hub to work with 10-inch, 13-inch, and other custom Formula SAE wheel and brake packages.\u003c\/p\u003e\n\u003cp\u003eYou can manufacture the custom hub yourself, work with a local machine shop, or have TRE manufacture the completed part.\u003c\/p\u003e\n\u003cp\u003eFrom an educational standpoint, we encourage teams with the resources and capability to experience the design and manufacturing process themselves. There is real engineering value in understanding machining access, workholding, distortion, tolerances, inspection, cost, and risk.\u003c\/p\u003e\n\u003cp\u003eTRE can provide engineering consultation whether we manufacture the final hub or your team does.\u003cspan role=\"text\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Use an Integrated Hub System?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eWheel hubs are deceptively difficult components. They combine wheel loads, braking loads, drive torque, bearing fits, bearing stiffness, retention, fatigue, manufacturing tolerances, and drivetrain packaging into a very small assembly.\u003c\/p\u003e\n\u003cp\u003eAn integrated tripod wheel hub adds another challenge: the outboard CV joint and wheel bearing system occupy the same space and carry loads through the same structure.\u003c\/p\u003e\n\u003cp\u003eThe Lightning Series 55mm Wheel Hub Core gives teams a developed starting point for that architecture while preserving the engineering freedom to optimize the rest of the corner.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eThe system allows teams to optimize:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBearing type\u003c\/li\u003e\n\u003cli\u003eBearing diameter\u003c\/li\u003e\n\u003cli\u003eBearing preload\u003c\/li\u003e\n\u003cli\u003eBearing spacing\u003c\/li\u003e\n\u003cli\u003eUpright mass and stiffness\u003c\/li\u003e\n\u003cli\u003eWheel offset\u003c\/li\u003e\n\u003cli\u003eBrake package\u003c\/li\u003e\n\u003cli\u003eWheel attachment\u003c\/li\u003e\n\u003cli\u003eDrivetrain packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ewithout having to redesign the Lightning Series tripod housing itself.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eSTEP Assembly Download\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eThe downloadable STEP assembly shows:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLightning Series integrated hub geometry\u003c\/li\u003e\n\u003cli\u003eTripod and roller operating envelope\u003c\/li\u003e\n\u003cli\u003e55 mm bearing journal\u003c\/li\u003e\n\u003cli\u003e43 mm bearing spacing\u003c\/li\u003e\n\u003cli\u003eClamping nut\u003c\/li\u003e\n\u003cli\u003eExample bearing arrangement\u003c\/li\u003e\n\u003cli\u003eExample upright packaging\u003c\/li\u003e\n\u003cli\u003eTripod boot interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0725\/6761\/9875\/files\/Hub_Assy_55mm_Bearings_Integrated_18T_Lightning_Tripod.STEP?v=1787879110\"\u003e[DOWNLOAD STEP - LIGHTNING SERIES 55MM INTEGRATED WHEEL HUB]\u003c\/a\u003e\u003c\/h2\u003e\n\u003cp\u003eThe STEP assembly is provided as a packaging and integration model.\u003c\/p\u003e\n\u003cp\u003eTeams are encouraged to modify the \u003cstrong\u003ewheel, brake, bearing, spacer, and upright design around the TRE core\u003c\/strong\u003e, but should contact TRE before modifying the tripod tracks, bearing journal, clamp interface, or other controlled core geometry.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eNeed Help Designing the Corner?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eContact TRE to schedule an engineering consultation.\u003c\/p\u003e\n\u003cp\u003eTogether, we can review:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWheel and tire\u003c\/li\u003e\n\u003cli\u003eBrake rotor and caliper\u003c\/li\u003e\n\u003cli\u003eUpright concept\u003c\/li\u003e\n\u003cli\u003eBearing selection\u003c\/li\u003e\n\u003cli\u003eBearing spacing\u003c\/li\u003e\n\u003cli\u003ePreload or clearance strategy\u003c\/li\u003e\n\u003cli\u003eInner-race spacer design\u003c\/li\u003e\n\u003cli\u003eWheel and rotor offsets\u003c\/li\u003e\n\u003cli\u003eSuspension loads\u003c\/li\u003e\n\u003cli\u003eVehicle mass\u003c\/li\u003e\n\u003cli\u003eHalfshaft length\u003c\/li\u003e\n\u003cli\u003eTripod plunge\u003c\/li\u003e\n\u003cli\u003eMaximum tripod articulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTRE can help determine whether the Lightning Series integrated architecture makes sense for your car and help identify areas where the wheel-end design can be made lighter, stiffer, simpler, or easier to manufacture.\u003c\/p\u003e","brand":"Taylor Race Engineering","offers":[{"title":"Freewheel Hub","offer_id":55524207821091,"sku":null,"price":425.0,"currency_code":"USD","in_stock":true},{"title":"22T Spline Driven Hub","offer_id":55524207853859,"sku":null,"price":675.0,"currency_code":"USD","in_stock":true},{"title":"10T Spline Drive Hub","offer_id":55524207886627,"sku":null,"price":640.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/6761\/9875\/files\/55mmHub.jpg?v=1787879445","url":"https:\/\/www.taylor-race.com\/products\/modular-wheel-hub-system-tre-44mm-bearing-copy","provider":"Taylor Race Engineering","version":"1.0","type":"link"}