{"product_id":"castair-35hp-commercial-air-compressor-horizontal-tank-w-mounted-starter-c3513h60-s","title":"Castair 35HP Commercial Air Compressor Horizontal Tank w\/ Mounted Starter - C3513H60-S","description":"\u003ch2\u003eCastair 35HP Commercial Air Compressor — Horizontal Tank with Mounted Starter (C3513H60-S)\u003c\/h2\u003e\n\u003cp\u003eThe C3513H60-S is a heavy-duty 35HP cast iron air compressor built for high-demand commercial and industrial environments where a single-phase power source isn't an option. This is a two-stage, three-phase unit designed for shops that need sustained high-volume air output without the heat, noise, and maintenance overhead of rotary screw systems. The horizontal 60-gallon ASME tank keeps the footprint manageable in tighter equipment bays, and the factory-mounted magnetic motor starter means you're ready to wire and run — no sourcing a separate starter panel.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Castair does not publish full spec sheets for the C3513H60-S on their public website. The specifications below are derived from the model number nomenclature (35HP, 1-phase\/3-phase configuration, 60-gallon horizontal tank) and from Castair's published data for comparable models in the C-series pump lineup. Contact us or Castair directly for confirmed CFM, RPM, and dimensional data before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eWho This Compressor Is For\u003c\/h2\u003e\n\u003cp\u003eA 35HP two-stage compressor is not an entry-level purchase. If you're looking at this unit, you're running a high-production shop — a busy automotive repair facility with multiple air-powered lifts, tire changers, and impact tools all running simultaneously, or a light industrial operation with continuous air demand. The 35HP rating indicates this compressor is designed to deliver sustained, high-CFM output at pressures up to 175 PSI without the thermal limitations of single-stage machines. The mounted magnetic starter is standard on Castair's commercial units at this power level because the motor draw at startup requires proper overload protection — not a standard pressure switch.\u003c\/p\u003e\n\n\u003ch2\u003eCast Iron Pump — Why It Matters at This Power Level\u003c\/h2\u003e\n\u003cp\u003eCastair builds all of their commercial and industrial compressors around all-cast-iron pumps. At 35HP, this is non-negotiable. Aluminum pumps dissipate heat differently and have different expansion characteristics — in a compressor running at sustained high output, that matters for longevity. Castair's cast iron pumps run at slow RPM (typically 420-900 RPM depending on the pump configuration), which directly reduces heat generation, extends valve life, and lowers noise levels compared to high-RPM direct-drive designs.\u003c\/p\u003e\n\n\u003ch3\u003ePump Design Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAll cast iron construction:\u003c\/strong\u003e Cylinders, heads, and crankcase — no aluminum shortcuts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo-stage compression:\u003c\/strong\u003e First stage compresses to intermediate pressure, second stage brings it to working pressure — more efficient and cooler than single-stage at high PSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlow RPM operation:\u003c\/strong\u003e Extended pump life, reduced heat, quieter than high-speed alternatives\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapered roller bearings:\u003c\/strong\u003e Both ends of the crankshaft for superior support and reduced friction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods:\u003c\/strong\u003e With automotive-type rod insert bearings at the crankshaft and needle bearings at the wrist pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisc and spring valves:\u003c\/strong\u003e Easier to service than reed valves, higher efficiency, more reliable under continuous duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-ring pistons:\u003c\/strong\u003e Higher efficiency, less oil carry-over into the air stream\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical centrifugal unloader:\u003c\/strong\u003e Load-less start-up every time — the motor starts unloaded and the unloader engages as RPM builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTank and Frame Construction\u003c\/h2\u003e\n\u003ch3\u003e60-Gallon Horizontal ASME Tank\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHorizontal configuration:\u003c\/strong\u003e Lower profile compared to vertical tanks — useful in shops with height restrictions or where the compressor needs to fit under a mezzanine or low ceiling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eASME-rated tank:\u003c\/strong\u003e American Society of Mechanical Engineers code compliance for pressure vessel integrity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowder coat finish:\u003c\/strong\u003e Corrosion-resistant exterior\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannel base:\u003c\/strong\u003e Standard on Castair horizontal tanks — welded steel channel frame for stable mounting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eASME safety valve:\u003c\/strong\u003e Factory-installed pressure relief\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopper discharge tube:\u003c\/strong\u003e Stronger and better heat dissipation than rubber hose connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotally enclosed metal belt guard:\u003c\/strong\u003e OSHA-compliant, keeps debris out of the drive system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eElectrical and Controls\u003c\/h2\u003e\n\u003ch3\u003eFactory-Mounted Magnetic Motor Starter\u003c\/h3\u003e\n\u003cp\u003eThe -S suffix means this unit ships with the magnetic motor starter factory-mounted and wired. At 35HP on three-phase power, a magnetic starter is required — the motor's inrush current at startup far exceeds what a standard pressure switch can handle. The factory installation saves you electrician time on-site; your electrician just needs to run the incoming three-phase feed to the starter enclosure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree-phase motor:\u003c\/strong\u003e More efficient than single-phase at this power level, lower operating current for the same output, better suited for sustained commercial duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull service factor motor:\u003c\/strong\u003e Castair's industrial motors carry a minimum 15% service factor — meaning the motor is rated to handle sustained loads above its nameplate HP without overheating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverload protection:\u003c\/strong\u003e Built into the magnetic starter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTank\u003c\/th\u003e\n\u003cth\u003eStarter\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eC3513H60\u003c\/td\u003e\n\u003ctd\u003e60-Gallon Horizontal\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003ctd\u003eOrder starter separately if needed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eC3513H60-S\u003c\/td\u003e\n\u003ctd\u003e60-Gallon Horizontal\u003c\/td\u003e\n\u003ctd\u003eFactory mounted\u003c\/td\u003e\n\u003ctd\u003eThis unit — ready to wire\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eC3516V60\u003c\/td\u003e\n\u003ctd\u003e60-Gallon Vertical\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003ctd\u003eVertical option for floor space savings\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eC3516V60-S\u003c\/td\u003e\n\u003ctd\u003e60-Gallon Vertical\u003c\/td\u003e\n\u003ctd\u003eFactory mounted\u003c\/td\u003e\n\u003ctd\u003eVertical with starter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhen Does a Shop Need This vs. Stepping Up or Down?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eStep down to 20-25HP\u003c\/strong\u003e if your shop runs 3-5 air tools intermittently and your compressor has idle time between cycles. The 20HP and 25HP industrial units from Castair (I20324HC4-S, I25324HC4-S) will handle most busy automotive shops at significantly lower purchase cost and operating expense.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis unit (35HP) makes sense\u003c\/strong\u003e when you're running 6-10 air tools simultaneously with near-continuous demand — production line work, large fleet maintenance operations, or shops with multiple lifts, air-powered equipment, and sandblasting all drawing at once. If your existing compressor is cycling constantly and never fully recharging between draws, you need more capacity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to 30HP with a larger tank\u003c\/strong\u003e (Castair's I30324HC4Z-S with 240-gallon tank) if you need both higher output AND larger reserve volume. More tank means more buffer between pump cycles.\u003c\/p\u003e\n\n\u003ch2\u003eFactory Options Available\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Oil Control (#6304M):\u003c\/strong\u003e Shuts down the compressor if oil level drops — prevents pump damage from running dry\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHour Meter (#HRM460M for 460V):\u003c\/strong\u003e Track runtime for scheduled maintenance intervals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir Operated Auto Drain (#ADVSM):\u003c\/strong\u003e Automatic tank condensate drain\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic Auto Drain (#SDV03M):\u003c\/strong\u003e Timer-controlled electronic drain valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Control (#DC3):\u003c\/strong\u003e Allows switching between on\/off and constant speed operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntake Noise Silencers (#SA100x2M):\u003c\/strong\u003e Reduces intake noise at the pump\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBelt Tensioner Motor Base:\u003c\/strong\u003e Makes belt tension adjustment possible without removing the belt guard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeltguard Aftercooler (#BGAC3M):\u003c\/strong\u003e Cools compressed air before it enters the tank — important if you're using air tools sensitive to moisture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVibration Pads (#VP1004):\u003c\/strong\u003e Set of four 4x4x1-inch rubber isolation pads — recommended for all stationary installations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRight From the Start Kit (#RFS003):\u003c\/strong\u003e Includes break-in oil, vibration pads, ball valve, flex hose, and air filter element — everything needed for proper installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e C3513H60-S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 35HP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank:\u003c\/strong\u003e 60-gallon horizontal, ASME-rated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Speed:\u003c\/strong\u003e 1725 RPM (industrial motor)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump Type:\u003c\/strong\u003e Two-stage cast iron, C-series\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStarter:\u003c\/strong\u003e Factory-mounted magnetic motor starter included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDischarge:\u003c\/strong\u003e Copper discharge tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBelt Guard:\u003c\/strong\u003e Totally enclosed metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Castair (castair.net)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCFM and RPM:\u003c\/strong\u003e Contact us for confirmed specifications — not listed in Castair's public spec tables for this model\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAssembled air compressor (pump, motor, tank, belt drive)\u003c\/li\u003e\n  \u003cli\u003eFactory-mounted and wired magnetic motor starter\u003c\/li\u003e\n  \u003cli\u003eMetal belt guard (totally enclosed)\u003c\/li\u003e\n  \u003cli\u003eCopper discharge tube with unloader\u003c\/li\u003e\n  \u003cli\u003eASME safety valve\u003c\/li\u003e\n  \u003cli\u003ePressure switch\u003c\/li\u003e\n  \u003cli\u003eSight glass for oil level monitoring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Does not include vibration pads, flex hose, ball valve, or break-in oil — order Right From the Start Kit #RFS003 separately or add individual components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h2\u003e\n\u003cp\u003eWe specialize in commercial and industrial air compressors and have been helping shops select the right equipment since 2016. We carry the full Castair lineup — pumps, compressors, tanks, starters, and accessories — and can help you configure the right unit for your power supply, duty cycle, and shop layout. Free shipping on qualifying orders. Free technical support at 866-217-0063. Full manufacturer warranty. If this unit isn't the right fit, we'll tell you — we'd rather help you get the right compressor than sell you the wrong one.\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":53342527717589,"sku":"C3513H60-S","price":3922.04,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-35hp-commercial-air-compressor-horizontal-tank-w-mounted-starter-c3513h60-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}