The Castair R25312VG30-460 is a 25HP 3-phase rotary screw air compressor delivering 105 CFM at 100 PSI, mounted on a 120-gallon vertical storage tank and configured for 460V 3-phase electrical service. The 460V supply is the standard choice for larger industrial facilities and shops with 460V panels already in place — you get the full 25HP output while running at roughly half the amperage of a 230V equivalent, which translates to smaller wire sizes and less heat in the motor. The vertical tank keeps the floor footprint tight while storing 120 gallons of compressed air to handle peak demand without pressure sag.
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 Pump: Oil-injected rotary screw element rated for continuous operation — no duty cycle restrictions, runs as long as the shift requires
- 105 CFM at 100 PSI: Confirmed output from product specification — enough to supply a full shop of air tools running simultaneously without pressure drop
- 3-Phase 460V Power Supply: Lower amp draw compared to 230V at the same horsepower; preferred for 460V-wired facilities
- 120-Gallon Vertical Tank: Compact footprint with high storage capacity — the right orientation when ceiling height is adequate and floor space is limited
- Automatic Load/Unload Control: Reduces energy consumption and compressor wear during low-demand periods by cycling between load and unload modes
- TEFC Motor: Enclosed motor resists shop dust, moisture, and debris without requiring additional enclosure
- Air/Oil Separator System: Keeps oil carryover within acceptable limits to protect pneumatic tooling and air line integrity
Technical Specifications
- Horsepower: 25 HP
- Free Air Delivery: 105 CFM at 100 PSI
- Power Supply: 3-Phase, 460V
- Tank Capacity: 120 Gallons
- Tank Orientation: Vertical
- Compressor Type: Rotary Screw
- Duty Cycle: 100% continuous
- Model Number: R25312VG30-460
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 on a vertical 460V platform is well suited for:
- Industrial facilities with 460V panels that need high CFM output in a minimal footprint
- Multi-bay shops with sustained demand from multiple operators simultaneously
- Fleet service operations with continuous heavy pneumatic tool use
- Body shops and refinishing operations running paint equipment and prep tools at the same time
- Tire and truck service shops with multiple bays and high throughput
- Any application where the 20HP unit has become the bottleneck and more CFM is needed
Why Buy From Us?
We have been selling and supporting air compressors since 2016. If you are deciding between the 460V and 230V versions of this unit, or comparing the 25HP to the 30HP step up, call us at 866-217-0063 — we will help you run the numbers on your shop actual air demand before you make a decision this size. Free shipping on qualifying orders.
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 R25312VG30-460 compared to a reciprocating piston compressor?
The R25312VG30-460 is rated for 100% continuous duty — it can run all day without thermal shutdowns or mandated rest cycles. Piston compressors are typically rated 60–75% duty cycle, meaning they need downtime to cool. If your shop runs air-hungry equipment for extended shifts, a rotary screw like this one is the correct choice.
How often does the oil need to be changed on this rotary screw compressor?
Cast Air rotary screw units like the R25312VG30-460 use compressor-grade synthetic oil with typical change intervals of 2,000–4,000 hours depending on operating environment and oil brand used. Always follow the interval in your specific service manual — dusty or high-humidity environments shorten that interval. Keep a log; skipping oil service is the fastest way to damage the airend on any rotary screw.
How loud is the R25312VG30-460 in operation?
Cast Air rotary screw compressors in this class typically operate in the 68–72 dB(A) range at one meter — noticeably quieter than a comparable piston unit which often runs 85–90 dB(A). The enclosed cabinet design on the R25312VG30-460 contains mechanical noise from the airend and motor. You can hold a conversation near it without hearing protection, which is not the case with most reciprocating units at 25 HP.
What electrical service does the R25312VG30-460 require?
This unit runs on 460V 3-phase power, which is required — it is not a dual-voltage machine. At 25 HP, plan for a dedicated 60-amp circuit minimum; confirm with your electrician using the motor nameplate FLA and your local code for conductor sizing and disconnect requirements. If your facility only has single-phase or 208V 3-phase service, this is not the correct unit and you should call us at 866-217-0063 to find the right match for your power supply.
What air tools and equipment will the R25312VG30-460 support?
Cast Air publishes this unit at approximately 103 CFM at 125 PSI — enough to run multiple high-demand tools simultaneously. To give you a practical frame of reference: a 1" impact wrench draws roughly 20–25 CFM, a DA sander 10–15 CFM, and a plasma cutter 25–50 CFM depending on amperage. A shop running four to six medium-demand tools concurrently or two to three heavy-demand tools like plasma, large sandblasters, or automotive lifts is a typical fit for this compressor.
