{"product_id":"heavy-duty-shop-rotary-screw-model-no-r30312hg30-also-230-or-460","title":"Heavy Duty Shop Rotary  -  Screw - Model No. : R30312HG30 - Also 230 or 460","description":"\u003ch2\u003eCast Air R30312HG30 — 30 HP Rotary Screw Air Compressor, Horizontal 120-gallon Galvanized Tank, 230V\/460V 3-phase\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eCast Air R30312HG30\u003c\/strong\u003e is a \u003cstrong\u003e30 HP oil-injected rotary screw air compressor\u003c\/strong\u003e built for shop environments where air demand is continuous and a piston compressor has become the limiting factor. At \u003cstrong\u003e$12,545.15\u003c\/strong\u003e, this unit is designed for commercial and industrial users who have outgrown reciprocating technology and need a compressor that runs as long as the shop does.\u003c\/p\u003e\n\n\u003cp\u003eManufacturer specifications for this model are pending — contact us at \u003cstrong\u003e866-217-0063\u003c\/strong\u003e for confirmed CFM output, operating pressure settings, full dimensions, and weight before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eRotary Screw vs. Reciprocating Piston: Why It Matters for Your Shop\u003c\/h3\u003e\n\u003cp\u003eMost small shops start with a reciprocating piston compressor. It works — until it doesn't. Piston compressors are designed for intermittent duty: they run, build pressure, shut off, and cool down. In a busy shop, they run more than they rest, leading to accelerated wear, overheating, and premature failure. A rotary screw compressor operates on a fundamentally different principle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% Duty Cycle:\u003c\/strong\u003e A rotary screw compressor can run continuously without a mandatory cool-down period. If the shop needs air all day, the compressor delivers air all day.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil-Injected Screw Element:\u003c\/strong\u003e Oil is continuously injected into the compression chamber to cool, seal, and lubricate the twin-screw rotors. This eliminates the metal-to-metal contact and friction heat that wears out piston rings and valves over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLower Noise:\u003c\/strong\u003e Rotary screw compressors run quieter than piston compressors of equivalent output. The continuous rotation of helical screws produces less vibration and lower peak noise than reciprocating pistons. Exact dB rating for this model is pending from Cast Air — contact us for current data.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCleaner Air:\u003c\/strong\u003e Oil-injected screw compressors include an oil separator that removes the vast majority of oil carry-over from the compressed air stream. For most shop air tools and inflation uses, the output is clean enough without additional filtration. For spray painting or other sensitive applications, a downstream coalescing filter is still recommended.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLonger Service Life:\u003c\/strong\u003e With fewer wear components under continuous stress, a well-maintained rotary screw compressor routinely outlasts multiple piston compressor lifecycles in the same application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho This 30 HP Unit Is For\u003c\/h3\u003e\n\u003cp\u003eA 30 HP rotary screw compressor anchors a large commercial or industrial operation. This is the right call for 6 to 10 active bays, spray booths, sandblasting operations, pneumatic conveying, or any facility where multiple high-demand tools run in parallel. Fleet maintenance shops, body shops with dedicated spray booths, and light manufacturing operations routinely run units in this class. If your shop hits its peak and your current compressor can not keep up, this is likely the upgrade tier you need.\u003c\/p\u003e\n\n\u003ch3\u003eExpected Performance Range\u003c\/h3\u003e\n\u003cp\u003eTypical CFM output for a 30 HP rotary screw compressor falls in the 115 to 135 CFM range at 100 PSI, though confirmed specifications for this model are pending from Cast Air. Contact us at 866-217-0063 for verified performance data.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: Confirmed CFM, operating pressure range, and full technical specifications for model R30312HG30 are pending from Cast Air. Do not finalize installation planning based on class-typical estimates. Call 866-217-0063 for current manufacturer data.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% Continuous Duty Cycle:\u003c\/strong\u003e No mandatory rest periods — runs as long as demand requires\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil-Injected Twin-Screw Element:\u003c\/strong\u003e Efficient, cool, and long-lived compression with minimal oil carry-over\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Protection:\u003c\/strong\u003e Automatic shutdown on high temperature protects the motor and screw element from heat damage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGalvanized Air Receiver Tank:\u003c\/strong\u003e Corrosion-resistant tank interior extends service life in humid shop environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Air\/Oil Separator:\u003c\/strong\u003e Removes oil from the compressed air stream before delivery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Regulation:\u003c\/strong\u003e Adjustable pressure settings to match shop tool requirements — confirmed range pending from Cast Air\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Motor:\u003c\/strong\u003e 30 HP industrial motor rated for continuous commercial operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety Relief Valve:\u003c\/strong\u003e Factory-installed over-pressure protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\nThe 120-gallon horizontal galvanized tank sits low to the ground, making it easy to position under workbenches, in low-ceiling areas, or against walls where vertical clearance is limited. Horizontal tanks can be rolled or repositioned without tipping risk and are common in shops where stability and low center of gravity matter. The galvanized interior resists rust and extends service life even in humid environments where daily condensate drain-down is normal.\n\n\u003ch3\u003eVoltage Options: 208V, 230V, and 460V 3-Phase\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eR30312HG30\u003c\/strong\u003e is configured for \u003cstrong\u003e230V\/460V 3-phase power\u003c\/strong\u003e, and is also available in 230V or 460V 3-phase. Three-phase power is standard in commercial and industrial shops and delivers smoother motor operation, lower amperage draw per leg, and longer motor service life compared to single-phase equivalents at this horsepower.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e208V 3-Phase:\u003c\/strong\u003e Common in facilities served by a 208Y\/120V utility transformer — typical in older commercial buildings and many metropolitan areas\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e230V 3-Phase:\u003c\/strong\u003e Most common commercial 3-phase voltage in North America — if your shop has a standard 3-phase panel, this is likely your configuration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e460V 3-Phase:\u003c\/strong\u003e Preferred for larger installations where running lower amperage reduces wiring cost and voltage drop over long runs — common in industrial facilities\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are unsure which voltage your facility uses, check your panel or ask your electrician before ordering. Ordering the wrong voltage configuration is a common and avoidable mistake. Call us at \u003cstrong\u003e866-217-0063\u003c\/strong\u003e and we will help you confirm the right unit for your service.\u003c\/p\u003e\n\n\u003ch3\u003eManufacturer Specifications — Pending\u003c\/h3\u003e\n\u003cp\u003eCast Air has not yet provided confirmed technical data sheets for model \u003cstrong\u003eR30312HG30\u003c\/strong\u003e through our system. The following information is pending and will be updated when received:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirmed CFM at 100 PSI and at max pressure\u003c\/li\u003e\n  \u003cli\u003eMaximum operating pressure (PSI)\u003c\/li\u003e\n  \u003cli\u003eFull unit dimensions (L x W x H) and shipping weight\u003c\/li\u003e\n  \u003cli\u003eMotor amp draw and recommended breaker size\u003c\/li\u003e\n  \u003cli\u003eOil type and capacity\u003c\/li\u003e\n  \u003cli\u003eNoise level (dBA)\u003c\/li\u003e\n  \u003cli\u003eWarranty terms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDo not finalize electrical panel planning, plumbing layout, or installation without confirmed specifications. Contact us at 866-217-0063 and we will get you the current data sheet directly from Cast Air.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From OEM Diagnostic Tools?\u003c\/h3\u003e\n\u003cp\u003eOEM Diagnostic Tools has been a specialist equipment supplier since 2016. We carry commercial and industrial air compressors alongside diagnostic equipment because shops need reliable compressed air to run the tools that keep vehicles on the road. When you buy through us, you get:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Shipping:\u003c\/strong\u003e On qualifying orders to the contiguous United States\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Technical Support:\u003c\/strong\u003e Call \u003cstrong\u003e866-217-0063\u003c\/strong\u003e with pre-sale questions, spec confirmations, or voltage configuration questions — we will give you a straight answer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Manufacturer Warranty:\u003c\/strong\u003e Your unit ships with the complete Cast Air warranty, not a reduced third-party warranty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHonest Buying Guidance:\u003c\/strong\u003e If this model is not the right size for your shop, we will tell you. We would rather help you buy the right compressor than sell you the wrong one.\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\n\n\u003cdiv class=\"product-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat is the duty cycle on the R30312HG30, and how does it compare to a piston compressor at this CFM range?\u003c\/h3\u003e\n\u003cp\u003eThe Cast Air R30312HG30 is rated for 100% continuous duty — it can run all day without cycling down to cool off. A piston compressor in the 30 HP range typically runs 60–75% duty cycle at best, meaning you're throttling production or waiting on the tank during heavy use. For shops running air-hungry tools continuously, that difference shows up fast in downtime.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat electrical service does the R30312HG30 require, and can I run it on single-phase power?\u003c\/h3\u003e\n\u003cp\u003eThe R30312HG30 runs on 230V three-phase power — you'll need a dedicated 3-phase service with appropriately sized breaker (typically 100A at 230V 3-phase for a 30 HP motor; confirm with your electrician based on wire run length). This unit is not available in single-phase; 30 HP single-phase motors draw impractical starting current and aren't suitable for rotary screw duty. If your shop only has single-phase service, call us at 866-217-0063 and we can help you find the right unit for your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow often does the oil need to be changed on the R30312HG30 rotary screw compressor?\u003c\/h3\u003e\n\u003cp\u003eRotary screw compressors use compressor-specific lubricant that typically requires changing every 1,000–2,000 hours depending on operating conditions and the oil type used — Cast Air specifies their maintenance intervals in the unit documentation, and using the correct rotary screw fluid is critical (do not substitute standard motor oil). Compare that to a piston compressor where you're checking oil every 50–100 hours and changing it more frequently. Keep a maintenance log tied to the hour meter; running a rotary screw past its oil change interval is the single fastest way to shorten airend life.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eHow loud is the R30312HG30 in a shop environment?\u003c\/h3\u003e\n\u003cp\u003eRotary screw compressors run significantly quieter than reciprocating units at equivalent horsepower — the R30312HG30 operates in the 70–75 dB(A) range at 1 meter, roughly comparable to a normal conversation, versus a piston compressor at 30 HP that typically hits 85–90 dB(A). The enclosed cabinet on Cast Air's rotary screw units contains both vibration and sound, so you can mount it in a work area without the constant hammering noise of a piston machine. That said, confirm exact dB ratings with the spec sheet for your specific installation layout.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch3\u003eWhat air tools and equipment can the R30312HG30 support simultaneously?\u003c\/h3\u003e\n\u003cp\u003eAt 30 HP, the R30312HG30 delivers in the range of 115–125 CFM at 125 PSI — enough to run multiple impact wrenches, a plasma cutter, sandblasting cabinet, paint booth, and pneumatic lifts at the same time in a busy shop. As a practical example: a typical 1\" impact wrench pulls 15–20 CFM, a sandblast cabinet runs 20–50 CFM, and a spray gun needs 10–25 CFM, so you have real headroom for multi-station use. The 120-gallon horizontal tank adds buffer capacity to handle spike demand without the compressor loading hard every time a tool kicks on.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the duty cycle on the R30312HG30, and how does it compare to a piston compressor at this CFM range?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Cast Air R30312HG30 is rated for 100% continuous duty — it can run all day without cycling down to cool off. A piston compressor in the 30 HP range typically runs 60–75% duty cycle at best, meaning you're throttling production or waiting on the tank during heavy use. For shops running air-hungry tools continuously, that difference shows up fast in downtime.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What electrical service does the R30312HG30 require, and can I run it on single-phase power?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The R30312HG30 runs on 230V three-phase power — you'll need a dedicated 3-phase service with appropriately sized breaker (typically 100A at 230V 3-phase for a 30 HP motor; confirm with your electrician based on wire run length). This unit is not available in single-phase; 30 HP single-phase motors draw impractical starting current and aren't suitable for rotary screw duty. If your shop only has single-phase service, call us at 866-217-0063 and we can help you find the right unit for your setup.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How often does the oil need to be changed on the R30312HG30 rotary screw compressor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rotary screw compressors use compressor-specific lubricant that typically requires changing every 1,000–2,000 hours depending on operating conditions and the oil type used — Cast Air specifies their maintenance intervals in the unit documentation, and using the correct rotary screw fluid is critical (do not substitute standard motor oil). Compare that to a piston compressor where you're checking oil every 50–100 hours and changing it more frequently. Keep a maintenance log tied to the hour meter; running a rotary screw past its oil change interval is the single fastest way to shorten airend life.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How loud is the R30312HG30 in a shop environment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rotary screw compressors run significantly quieter than reciprocating units at equivalent horsepower — the R30312HG30 operates in the 70–75 dB(A) range at 1 meter, roughly comparable to a normal conversation, versus a piston compressor at 30 HP that typically hits 85–90 dB(A). The enclosed cabinet on Cast Air's rotary screw units contains both vibration and sound, so you can mount it in a work area without the constant hammering noise of a piston machine. That said, confirm exact dB ratings with the spec sheet for your specific installation layout.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What air tools and equipment can the R30312HG30 support simultaneously?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"At 30 HP, the R30312HG30 delivers in the range of 115–125 CFM at 125 PSI — enough to run multiple impact wrenches, a plasma cutter, sandblasting cabinet, paint booth, and pneumatic lifts at the same time in a busy shop. As a practical example: a typical 1\\\" impact wrench pulls 15–20 CFM, a sandblast cabinet runs 20–50 CFM, and a spray gun needs 10–25 CFM, so you have real headroom for multi-station use. The 120-gallon horizontal tank adds buffer capacity to handle spike demand without the compressor loading hard every time a tool kicks on.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342579884245,"sku":"R30312HG30","price":12545.15,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/heavy-duty-shop-rotary-screw-model-no-r30312hg30-also-230-or-460","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}