{"product_id":"castair-replacement-motor-hub-5-8-shaft-lx58","title":"Castair Replacement Motor Hub 5\/8\" Shaft LX58","description":"\u003cp\u003eThe Castair Replacement Motor Hub with 5\/8\" Shaft (LX58) is the smallest shaft size in Cast Air's LX motor hub series, designed for compressor assemblies where the electric motor uses a 5\/8\" diameter output shaft. These are typically found on smaller single-phase compressor units — the kind you see running one or two air tools in a single-bay shop or light-duty service environment. Before ordering, measure your motor shaft with calipers. A 5\/8\" shaft measures 0.625\" in decimal — if your shaft is larger, you need a different LX hub.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the Motor Hub Does\u003c\/h3\u003e\n\u003cp\u003eThe motor hub connects the motor's rotating shaft to the drive pulley or coupling that powers the compressor pump. On small compressors, this connection takes significant torque stress every time the motor starts — especially on compressors that start under load. A hub that's worn loose on the shaft causes the drive pulley to wobble, which throws off belt alignment, accelerates wear on the motor bearing and pump shaft seal, and creates vibration the whole unit feels. Replacing a worn hub is a straightforward repair that extends the life of both the motor and the pump.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5\/8\" Shaft Bore:\u003c\/strong\u003e Machined for motors with 0.625\" diameter output shafts — verify before ordering\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCast Air OEM Part:\u003c\/strong\u003e Correct bore tolerance and dimensions for compatible Cast Air compressor models\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Fit:\u003c\/strong\u003e Proper machining keeps the drive assembly running true without runout\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e No modification required for compatible units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LX58\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft Diameter:\u003c\/strong\u003e 5\/8\" (0.625\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Replacement Motor Hub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $19.25\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Manufacturer's product page was unavailable at time of writing. Contact us with your Cast Air model number to confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhen You Need This Part\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHub is cracked or worn and the pulley has developed play on the shaft\u003c\/li\u003e\n  \u003cli\u003eCompressor is vibrating or running louder than it should\u003c\/li\u003e\n  \u003cli\u003eBelt slips or misaligns even with correct tension and sheave alignment\u003c\/li\u003e\n  \u003cli\u003eReplacing a worn motor and need a hub to match the new motor's 5\/8\" shaft\u003c\/li\u003e\n  \u003cli\u003eAnnual maintenance on a smaller Cast Air unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLX Series Hub Sizes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLX58\u003c\/strong\u003e — 5\/8\" shaft (this part)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLX78\u003c\/strong\u003e — 7\/8\" shaft\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLX100\u003c\/strong\u003e — 1\" shaft\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLX118\u003c\/strong\u003e — 1-1\/8\" shaft\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLX138\u003c\/strong\u003e — 1-3\/8\" shaft\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From OEM Diagnostic Tools?\u003c\/h3\u003e\n\u003cp\u003eWe stock the full Cast Air LX hub series so you don't have to wait for a back-order from the factory. We've supplied shops with compressor replacement parts since 2016 — small parts included. Free shipping on qualifying orders. If you need help identifying the correct part number for your Cast Air unit, give us a call.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342571397333,"sku":"LX58","price":35.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/CastairReplacementAirCompressorMotorHub_c8847835-418e-461e-9991-70bac1a0ab20.png?v=1772652733","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-replacement-motor-hub-5-8-shaft-lx58","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}