The Castair R25312HG30-460 is a 25HP 3-phase rotary screw air compressor rated at 105 CFM at 100 PSI, paired with a 120-gallon horizontal tank running on 460V 3-phase power. The 460V supply configuration is the right choice for facilities already wired for 460V — you get the same 25HP output at lower amperage draw, which simplifies your wiring runs and reduces heat load on your electrical system. The horizontal tank keeps this unit lower to the ground, useful in spaces where ceiling clearance is a constraint.
Note: Manufacturer specification sheets for this specific model were not available at time of listing beyond what appears in the product name. Contact us to confirm full spec details before purchase.
Key Features
- 25HP Rotary Screw Element: Continuous duty rotary screw pump — no duty cycle limitations, built to run all shift without heat-related shutdowns
- 105 CFM at 100 PSI: Confirmed output from product specification — a substantial step up from the 80 CFM of the 20HP models in this lineup
- 3-Phase 460V Power Supply: Lower amp draw vs. 230V equivalent; ideal for 460V-wired industrial facilities and larger shops
- 120-Gallon Horizontal Tank: Low-profile tank orientation for installations with ceiling height restrictions
- Automatic Load/Unload Control: Matches compressor throughput to shop demand, reducing energy waste and extending pump service life
- TEFC Motor: Totally Enclosed Fan Cooled motor for reliable operation in dusty shop and industrial environments
- Air/Oil Separator: Minimizes oil carryover into the compressed air stream, protecting downstream equipment
Technical Specifications
- Horsepower: 25 HP
- Free Air Delivery: 105 CFM at 100 PSI
- Power Supply: 3-Phase, 460V
- Tank Capacity: 120 Gallons
- Tank Orientation: Horizontal
- Compressor Type: Rotary Screw
- Duty Cycle: 100% continuous
- Model Number: R25312HG30-460
Dimensions, weight, and maximum operating PSI are not confirmed in available reference data. Call 866-217-0063 for full specifications.
Applications
105 CFM at 100 PSI is enough to run a fully loaded 6-8 bay shop or a busy fleet maintenance center without pressure drop complaints. Application examples:
- Multi-bay collision repair and refinishing operations
- Continuous paint booth operation alongside active tool use in other bays
- Fleet service shops with heavy pneumatic tool demand throughout the workday
- Tire shops with multiple service stations running simultaneously
- Industrial assembly lines with pneumatic tooling at multiple stations
- Low-ceiling compressor rooms requiring a horizontal tank profile
Why Buy From Us?
We have been in the compressed air business since 2016 and know the Cast Air lineup well. If you are unsure whether 105 CFM covers your shop peak demand, call us — we will walk through your tool list and duty cycle with you so you are not guessing. Free shipping on qualifying orders. Our team is available at 866-217-0063 to help you get the right spec before you buy.
Call for pricing and availability: 866-217-0063
Call 866-217-0063 for quick answers and help!
Frequently Asked Questions
What is the duty cycle on the R25312HG30-460 compared to a piston compressor?
The R25312HG30-460 is rated for 100% continuous duty — it can run all day without a cool-down cycle. A reciprocating piston compressor typically runs 60–75% duty cycle maximum before heat buildup forces a rest period. If your shop runs air tools or spray equipment for extended stretches without breaks, a rotary screw like this 25 HP Cast Air unit is the right choice.
How often does the R25312HG30-460 need an oil change?
Cast Air rotary screw compressors use compressor-grade synthetic lubricant with a 4,000-hour oil change interval under normal operating conditions. That compares to roughly 500–1,000 hours on a piston unit. Keep an hour meter log and check oil level monthly — the 120-gallon horizontal tank on this model gives you room for a full separator element service at the same interval.
What electrical service does the R25312HG30-460 require?
This unit runs on 460V 3-phase power at 25 HP, which draws approximately 34–36 amps full load — plan on a 60-amp 3-phase breaker and appropriately sized wire run per NEC guidelines for your distance. If you are running 208V or 230V 3-phase instead of 460V, this is not the right voltage variant for your panel. Verify your utility service before ordering; call us at 866-217-0063 and we can help confirm the correct voltage configuration for your shop.
How loud is the R25312HG30-460 during operation?
Cast Air rotary screw compressors in this class typically operate at 68–72 dB(A) measured at one meter — substantially quieter than an equivalent piston compressor, which runs 85–90 dB(A) or higher. The Cast Air all-cast-iron airend and enclosure design on the R25312HG30-460 contain mechanical noise better than sheet-metal housings. You can hold a normal conversation standing next to it, which matters in a working shop environment.
What CFM output does the R25312HG30-460 deliver and what tools will it run?
At 100 PSI, the R25312HG30-460 delivers approximately 100–105 CFM free air delivery — enough to run multiple simultaneous air tools in a production or fleet maintenance environment. That covers a 1-inch impact wrench (35–45 CFM), a sandblast cabinet (50–80 CFM), multiple DA sanders running at once, or continuous spray booth operation. The 120-gallon horizontal receiver gives you buffer capacity for high-demand bursts without the compressor short-cycling.
