{"product_id":"mcfarlane-bearing-house-cessna-airbox-mc0750113-1","title":"McFarlane Bearing House (Cessna Airbox); MC0750113-1","description":"\u003ch6\u003e\u003cspan style=\"font-size: small; font-family: Helvetica;\"\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Georgia;\"\u003e\u003cstrong style=\"font-size: 18pt;\"\u003eControl Arms, Shafts and Bearing Housings \u003c\/strong\u003e\u003c\/span\u003e \u003cbr\u003e Unique elastomer bearing replaces needle bearing\u003c\/strong\u003e\u003c\/p\u003e \u003cdiv class=\"float-right\"\u003eMcFarlane's elastomer bearing is assembled with  tension between the mating surfaces. This tension prevents  micro-movement and its related metal erosion. The bearing contact area  that transfers vibration motion from the heat box to the butterfly shaft  is hundreds of times greater than that of the original needle bearing.  This large surface effectively prevents localized metal erosion.\u003c\/div\u003e \u003cdiv class=\"float-right\"\u003e\u003cimg style=\"font-family: Verdana, Helvetica, sans-serif; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal;\" src=\"https:\/\/www.mcfarlaneaviation.com\/media\/images\/includeimages-carb-heat-section.jpg\" alt=\"\" width=\"304\" height=\"254\" border=\"0\"\u003e\u003c\/div\u003e \u003cp\u003e \u003c\/p\u003e \u003cdiv class=\"float-right\"\u003e \u003c\/div\u003e \u003cul\u003e\n\u003cli\u003eAbsorbs shaft and butterfly vibration\u003c\/li\u003e\n\u003cli\u003eEliminates needle bearing failures\u003c\/li\u003e\n\u003cli\u003eIncreases service life of \u003cem\u003e\u003cstrong\u003eall\u003c\/strong\u003e\u003c\/em\u003e components\u003c\/li\u003e\n\u003cli\u003eDirect replacement for original parts\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eProven Design\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eTested to over 700,000 cycles while exposed to avgas, heat and vibration without any change in performance\u003c\/li\u003e\n\u003cli\u003eExtremely rugged and wear resistant in high temperature and fuel environments\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"float-right\"\u003e \u003c\/div\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eConvenient\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eDiscontinued part numbers through the factory are now manufactured by McFarlane\u003c\/li\u003e\n\u003cli\u003eShafts, arms, bearing housings, monel rivets and roll pins are also available separately or in \u003ca href=\"https:\/\/www.mcfarlaneaviation.com\/products\/category\/cessna-kits\/\"\u003ekits\u003c\/a\u003e  \u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003eThe carburetor heat box suffer more from engine vibration than other  parts of the engine installation due to the distance of its location  from the center of the engine. Engine vibrations, which are small back  and forth movements of the engine about a point of rotation in the  engine, become larger and more severe as the distance increases from the  center of these movements. A fraction of an inch of engine movement  near the center of the engine could result in over an inch of movement  in an attached component that is located a considerable distance from  the center of the engine. This phenomenon can be visualized by imagining  what would happen if a five foot broom handle was solidly attached to  an idling aircraft engine. The far end of this broom handle would  oscillate wildly back and forth as the engine moved slightly. This is  similar to what is happening to the carburetor heat box. Normal engine  vibrations are amplified by the distance (arm) from the center of the  engine.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003eOrdinary needle bearings are not well suited for this high vibration  environment as they concentrate the energy of vibration movement to the  very small area where the needles contact the heat box butterfly shaft.  This concentrated kinetic energy results in metal loss and grooves being  worn into the shaft with eventual failure of the bearing system. Needle  bearing failure can lead to ingestion of loose needles into the engine  induction system and cylinders.\u003c\/p\u003e\u003c\/span\u003e\u003c\/h6\u003e","brand":"McFarlane","offers":[{"title":"McFarlane Bearing House (Cessna Airbox); MC0750113-1","offer_id":46190755643650,"sku":"0750113-1","price":161.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/7364\/8898\/files\/1467477__76872.jpg?v=1749071423","url":"https:\/\/rocketairshop.com\/products\/mcfarlane-bearing-house-cessna-airbox-mc0750113-1","provider":"Rocket Air","version":"1.0","type":"link"}