{"product_id":"castair-i738hc2-s","title":"Castair I738HC2-S","description":"\u003cp\u003eThe Castair I738HC2 is a 7.5 HP, 3-phase industrial air compressor on an 80-gallon horizontal ASME tank with the C2 pump — without the factory-mounted magnetic motor starter. It's identical to the I738HC2-S in every other respect: same C2 pump, same motor, same 80-gallon horizontal tank, same 585 RPM shaft speed, same 28.1 CFM at 175 PSI output, same 730 lb shipping weight. The starter is simply not included here.\u003c\/p\u003e\n\n\u003cp\u003eOrder this model if your shop already has a motor control panel that will handle overload protection, or if your electrician will source and mount the starter separately. For the starter-included version, see the I738HC2-S. If you're not sure which to order, call us and we'll walk through your electrical setup.\u003c\/p\u003e\n\n\u003ch3\u003ePump Features — Cast Iron C2 Two-Stage V4\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll cast iron V4 cylinder configuration:\u003c\/strong\u003e Four cylinders in a V arrangement — higher displacement than the C1, producing more CFM at lower RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlow 585 RPM operation:\u003c\/strong\u003e Lower shaft speed means less heat and less wear than faster-turning pump designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings at both crankshaft ends:\u003c\/strong\u003e Superior support for the larger pump's loads under belt drive and two-stage compression\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods:\u003c\/strong\u003e Automotive-type insert bearings at crankshaft, needle bearings at wrist pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc and spring valves:\u003c\/strong\u003e Field-serviceable, reliable under continuous duty cycling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-ring pistons:\u003c\/strong\u003e Less oil carry-over into the discharge air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader:\u003c\/strong\u003e No-load start every time, protecting motor and pump\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTank and Frame Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80-gallon horizontal ASME-rated tank:\u003c\/strong\u003e Powder coated, channel-supported base for stable floor installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME safety valve:\u003c\/strong\u003e Factory installed, rated for working pressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal belt guard:\u003c\/strong\u003e Fully enclosed — not a plastic clip-on\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper discharge and unloader tube:\u003c\/strong\u003e Better heat dissipation than rubber or plastic lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMotor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,725 RPM heavy-duty industrial motor:\u003c\/strong\u003e Full 15% service factor — continuous duty rated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-phase:\u003c\/strong\u003e Requires magnetic motor starter for overload protection (not included — see -S version for factory-mounted starter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCastair I738HC2 compressor assembly (C2 pump, motor, 80-gal horizontal tank, belt drive, belt guard)\u003c\/li\u003e\n\u003cli\u003eASME safety valve (installed)\u003c\/li\u003e\n\u003cli\u003eCopper discharge and unloader tube (installed)\u003c\/li\u003e\n\u003cli\u003ePressure switch (installed)\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eMagnetic motor starter not included — order I738HC2-S for the starter-included version\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAvailable Configurations — 7.5HP 3-Phase Industrial Lineup\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738HC1-S:\u003c\/strong\u003e 7.5HP, 3-phase, 80-gal horizontal, C1 pump, 895 RPM, 24.8 CFM@175PSI, 64x20x48 in., 625 lbs, magnetic starter included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738HC1:\u003c\/strong\u003e Same as above without factory-mounted magnetic starter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738HC2-S:\u003c\/strong\u003e 7.5HP, 3-phase, 80-gal horizontal, C2 pump, 585 RPM, 28.1 CFM@175PSI, 64x20x46 in., 730 lbs, magnetic starter included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738HC2:\u003c\/strong\u003e Same as above without factory-mounted magnetic starter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738VC1-S:\u003c\/strong\u003e 7.5HP, 3-phase, 80-gal vertical, C1 pump, 895 RPM, 24.8 CFM@175PSI, 32x24x74 in., 625 lbs, magnetic starter included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738VC1:\u003c\/strong\u003e Same as above without factory-mounted magnetic starter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738VC2-S:\u003c\/strong\u003e 7.5HP, 3-phase, 80-gal vertical, C2 pump, 585 RPM, 28.1 CFM@175PSI, 40x24x74 in., 730 lbs, magnetic starter included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI738VC2:\u003c\/strong\u003e Same as above without factory-mounted magnetic starter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI7312HC2-S:\u003c\/strong\u003e 7.5HP, 3-phase, 120-gal horizontal, C2 pump — maximum reserve for high-demand shops\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen Does a Shop Need This vs. Stepping Up or Down\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe I738HC2-S is right for your shop if:\u003c\/strong\u003e You have 3-phase power, need the higher CFM output of the C2 pump (28.1 CFM@175PSI), and want an 80-gallon tank for adequate reserve. This is the go-to unit for shops running spray guns, DA polishers, or three-bay operations alongside general hand tools. The C2 pump at 585 RPM runs quieter and cooler than the C1 at 895 RPM.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep down to I738HC1-S\u003c\/strong\u003e if your shop's sustained air demand is lower — general automotive service with impacts and ratchets doesn't always need the C2's extra CFM, and the C1 is a lighter, simpler unit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep up to I7312HC2-S\u003c\/strong\u003e (120-gallon) for maximum reserve — if you're painting multiple vehicles per day or running continuous sandblasting, the 120-gallon tank keeps the compressor from short-cycling.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e I738HC2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 7.5 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Capacity:\u003c\/strong\u003e 80 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Type:\u003c\/strong\u003e Horizontal, ASME-rated, powder coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Dimensions:\u003c\/strong\u003e 64 x 20 x 46 in. (L x W x H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 730 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Model:\u003c\/strong\u003e C2 (two-stage, cast iron, V4)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 585\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 0 PSI:\u003c\/strong\u003e 35.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM @ 175 PSI:\u003c\/strong\u003e 28.1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Working Pressure:\u003c\/strong\u003e 175 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Speed:\u003c\/strong\u003e 1,725 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarter:\u003c\/strong\u003e Not included (see I738HC2-S for starter-included version)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Starter (208\/230V):\u003c\/strong\u003e S72 with B36 heaters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Starter (460V):\u003c\/strong\u003e S74 with B22 heaters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Tube:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Guard:\u003c\/strong\u003e Metal, fully enclosed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe specialize in industrial and commercial air compressors and have been at it since 2016. When you call, you're talking to someone who knows the Castair lineup, can tell you whether the C1 or C2 pump fits your shop's CFM requirements, and can help you decide between horizontal and vertical tank configurations for your space. Free shipping, free technical support at 866-217-0063, full Castair manufacturer warranty. Call us before you buy if you have questions about which configuration is right for your shop.\u003c\/p\u003e\n\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":53342569300181,"sku":"I738HC2","price":8386.52,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-i738hc2-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}