{"product_id":"heavy-duty-shop-tandem-model-no-t10112hc2-s","title":"Heavy Duty Shop Tandem - Model No.: T10112HC2-S","description":"\u003ch2\u003eCastair T10112HC2-S — 10 HP Single-Phase Tandem Air Compressor, 120-Gallon, 420 RPM\u003c\/h2\u003e\n\n\u003cp\u003eThe Castair T10112HC2-S is a 10 horsepower, single-phase, two-stage tandem air compressor with a 120-gallon horizontal ASME tank and slow 420 RPM pump speed. The C2 designation identifies the slower pump configuration — at 420 RPM, this is one of the quietest 10 HP compressors available. Cast iron pumps at 420 RPM run cooler, quieter, and with significantly less wear per cycle than the same capacity unit running at faster RPM. If your shop is in an enclosed building, near customer areas, or anywhere that compressor noise is a genuine problem, the C2 configuration is worth the premium over the C1.\u003c\/p\u003e\n\n\u003cp\u003eLike all Cast Air tandem units, the T10112HC2-S runs two separate cast iron pumps off a single motor on a shared 120-gallon tank. Single-phase power means no three-phase electrical upgrade is required — this unit runs on standard single-phase service at the voltage appropriate for your area (230V single-phase).\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e T10112HC2-S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 10 HP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e Single-phase (1-phase)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Tandem — 2 pumps, 1 motor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStage:\u003c\/strong\u003e Two-stage compression\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 420 RPM (slowest in the 10 HP tandem lineup)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank:\u003c\/strong\u003e 120-gallon horizontal, ASME-certified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 85 x 28 x 57 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,305 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Speed:\u003c\/strong\u003e 1,725 RPM industrial with 15% service factor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $7,478.05\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCast Iron Pump Construction — Why It Matters\u003c\/h3\u003e\n\u003cp\u003eCastair has been building compressors since 1991 with one core principle: cast iron pumps, not aluminum. Cast Air pumps are oil-lubricated, not oil-less, and run at very slow RPMs. This combination means quieter operation, better heat dissipation, and a service life measured in decades rather than years. Here is what is inside every Castair tandem pump:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAll cast iron construction:\u003c\/strong\u003e Cylinders, heads, crankcase, and valve plates — cast iron throughout for superior heat dissipation and durability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlow RPM operation:\u003c\/strong\u003e Operating at 420 or 767 RPM depending on configuration — far slower than competitive units. Less heat, less noise, less wear per cycle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapered roller bearings:\u003c\/strong\u003e At both ends of each crankshaft for superior load support and reduced friction under the continuous operation these machines see\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods:\u003c\/strong\u003e Automotive-type rod insert bearings at the crankshaft and needle bearings at the wrist pin — designed for long service intervals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisc and spring valves:\u003c\/strong\u003e Stainless steel disc and spring valves provide approximately 10x the service life of standard reed valves — easier to service and more efficient under load\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-ring pistons:\u003c\/strong\u003e Better sealing, higher compression efficiency, and less oil carry-over into the air supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader:\u003c\/strong\u003e Load-free startup every time — the compressor never has to start against tank pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTank, Motor, and Controls\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowder-coated ASME-certified tank:\u003c\/strong\u003e Horizontal configuration with channel base mounting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eASME safety valves:\u003c\/strong\u003e Code-compliant pressure relief\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eTotally enclosed metal belt guard\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eCopper discharge and unloader tubes\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-duty 1,725 RPM industrial motor\u003c\/strong\u003e with full 15% service factor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnetic starter included (S designation):\u003c\/strong\u003e Motor control fully wired and mounted from the factory\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete tandem compressor unit (pumps, tank, motor, controls)\u003c\/li\u003e\n  \u003cli\u003eMagnetic motor starter — mounted and wired\u003c\/li\u003e\n  \u003cli\u003eCast Air \"Right from the Start\" Kit — everything needed for initial setup and first-day operation\u003c\/li\u003e\n  \u003cli\u003eASME safety valve(s)\u003c\/li\u003e\n  \u003cli\u003eCopper discharge and unloader tubing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy a Tandem vs. a Single-Pump Compressor\u003c\/h3\u003e\n\u003cp\u003eA tandem compressor runs two separate pump assemblies from a single motor on a shared tank. This design offers real operational advantages that a comparably rated single-pump unit cannot match:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigher combined CFM output:\u003c\/strong\u003e Two pumps filling the same tank simultaneously means faster recovery and more sustained air delivery under continuous demand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in redundancy:\u003c\/strong\u003e If one pump needs service, the other continues operating — a single-pump compressor is either running or completely down\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLower heat per pump:\u003c\/strong\u003e Neither pump runs at maximum stress continuously — the shared workload runs cooler and extends pump life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended pump service intervals:\u003c\/strong\u003e Runtime hours are split across two pumps — maintenance intervals per pump are effectively doubled\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping and Lead Time\u003c\/h3\u003e\n\u003cp\u003eThese units ship within two weeks of order placement. Note that shipping means leaving the warehouse within two weeks — freight delivery times vary by location and are in addition to the lead time. All orders receive a courtesy call to confirm application requirements and verify the correct unit has been selected for your shop.\u003c\/p\u003e\n\n\u003ch3\u003eC1 vs. C2 Pump Speed — 767 RPM vs. 420 RPM\u003c\/h3\u003e\n\u003cp\u003eThe C1 configuration (T10112HC1-S) runs at 767 RPM. The C2 configuration (this unit) runs at 420 RPM. Here is what that difference means in practice:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNoise:\u003c\/strong\u003e Lower RPM means measurably less noise — if your shop is in a building where compressor sound is an issue, the C2 is the correct choice\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeat:\u003c\/strong\u003e Slower pump speed generates less heat per compression cycle — the pumps run cooler, which extends seal, valve, and ring life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir volume per stroke:\u003c\/strong\u003e At 420 RPM, each stroke is slower but the compression ratio per stroke is optimized differently — the pumps are physically larger to compensate for the slower speed while maintaining the rated CFM output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e The C2 unit weighs 1,305 lbs vs. 1,115 lbs for the C1 — the larger pump assemblies add mass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e The C2 commands a $918 premium over the C1 for the same tank and HP rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e10 HP Tandem Lineup — Configuration Reference\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT10112HC1-S\u003c\/strong\u003e — 10 HP, 1-phase, 120 gal, 767 RPM ($6,560.05)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT10112HC2-S (this unit)\u003c\/strong\u003e — 10 HP, 1-phase, 120 gal, 420 RPM ($7,478.05)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT10124HC1-S\u003c\/strong\u003e — 10 HP, 1-phase, 240 gal, 767 RPM ($8,023.75)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT10124HC2-S\u003c\/strong\u003e — 10 HP, 1-phase, 240 gal, 420 RPM ($9,012.30)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT10312HC1-S\u003c\/strong\u003e — 10 HP, 3-phase, 120 gal, 767 RPM ($5,660.75)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT10312HC2-S\u003c\/strong\u003e — 10 HP, 3-phase, 120 gal, 420 RPM ($6,579.60)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT10324HC1-S\u003c\/strong\u003e — 10 HP, 3-phase, 240 gal, 767 RPM ($7,194.15)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen Does a Shop Need the T10112HC2-S\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis unit is the right choice when:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eYou have single-phase power and need 10 HP capacity with the quietest possible pump operation\u003c\/li\u003e\n  \u003cli\u003eYour shop is in an enclosed space, adjacent to offices, or in any location where compressor noise is a documented issue\u003c\/li\u003e\n  \u003cli\u003eYou prioritize long pump life over the lower purchase price of the C1 configuration\u003c\/li\u003e\n  \u003cli\u003eYou are running equipment that benefits from the lower vibration signature of a slower pump\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChoose the T10112HC1-S instead when:\u003c\/strong\u003e The noise difference is not a concern and the $918 price difference is significant for your budget.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to the T10124HC2-S when:\u003c\/strong\u003e You need the slow-pump configuration with a 240-gallon tank for higher air storage capacity.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuthorized Cast Air dealer since 2016\u003c\/strong\u003e — we know the lineup and can help you choose the right tank size, phase, and pump speed for your specific shop\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on this order — freight included to your location\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree technical support\u003c\/strong\u003e at 866-217-0063 — call before ordering to confirm phase requirements, tank sizing, and CFM needs for your application\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Cast Air manufacturer warranty\u003c\/strong\u003e on every component\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHonest buying guidance:\u003c\/strong\u003e If a different HP or configuration is a better fit, we will tell you before you order a $6,000+ compressor\u003c\/li\u003e\n\u003c\/ul\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":53342603083989,"sku":"T10112HC2-S","price":7478.05,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/heavy-duty-shop-tandem-model-no-t10112hc2-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}