Cast Air R1038HG11 — 10HP 3-Phase Rotary Screw Air Compressor, Horizontal Tank
The Cast Air R1038HG11 is a 10-horsepower, three-phase rotary screw air compressor with a horizontal tank configuration, priced at $8,386.95. If you have been comparing rotary screw compressors in the 10HP class and want the lower-profile horizontal layout — or your shop ceiling makes a vertical tank impractical — the R1038HG11 delivers the same rotary screw performance in a footprint that works better for low-ceiling facilities and shops where fitting access matters.
What Rotary Screw Technology Delivers That Piston Compressors Cannot
- 100% Duty Cycle: Rotary screw compressors are designed for continuous operation. Piston compressors are typically rated 50-75% duty cycle — they need rest cycles between runs. In a production environment where air demand is constant, a piston machine is always playing catch-up. The R1038HG11 runs as long as you need it to without cycling down.
- Consistent Air Flow: The twin-rotor helical screw element compresses air in a smooth, continuous flow rather than the pulse-and-hammer action of a piston. Your tools see steadier pressure, which matters for spray guns and precision pneumatic equipment.
- Significantly Quieter: A 10HP piston compressor is loud — typically 85-90 dB or more at the machine. Rotary screw compressors in this class typically operate in the 65-75 dB range. In a shop where you communicate with customers or where technicians work nearby, the difference is noticeable.
- Oil-Injected Compression: The screw elements are lubricated and cooled by oil during compression. An integrated air/oil separator removes oil from the compressed air before it reaches your distribution lines and tools. Regular oil changes and separator element replacement are the primary maintenance tasks.
- Lower Operating Temperatures: Oil injection keeps the compression cycle cool, which extends component life and reduces thermal stress compared to air-cooled piston designs running near their duty cycle limit.
Horizontal Tank — Why It Matters for Your Shop
- Low-Ceiling Shop Compatibility: The horizontal tank lies on its side, keeping the overall machine height well below what a vertical tank unit requires. If your shop ceiling is under 9-10 feet, or if overhead obstructions limit where you can place equipment, the horizontal configuration opens up more installation locations.
- Lower Center of Gravity: A horizontal tank sits lower and is harder to tip. For shops that move equipment or where forklift traffic is nearby, this can be a practical advantage.
- Easier Plumbing Access: Horizontal tanks typically offer drain and outlet connections at accessible heights without requiring step stools or ladders for routine maintenance. The condensate drain is at the lowest point of the tank with straightforward access.
- Longer Floor Footprint: The tradeoff is that a horizontal tank extends further along the floor than a vertical unit of comparable capacity. Measure your available wall space before ordering. The R1038HG11 needs a run of floor space along one wall rather than a square corner footprint.
- Installation Flexibility: Horizontal compressors are generally easier to move through doorways and position during installation, which can reduce setup costs if your machine room has a tight entry.
10HP 3-Phase Power — What You Need Before Installation
- Three-Phase Electrical Service Required: This compressor will not run on single-phase power. If your shop is on single-phase service, you need either a phase converter or a different compressor. Confirm your incoming electrical service with your electrician before ordering.
- 230V or 460V Configuration: The R1038HG11 is available in 230V or 460V three-phase. Specify your voltage at the time of order. The motor windings are different for each voltage — this is not a field adjustment.
- When to Choose 230V: Your shop is already on 230V three-phase service. Common in older buildings and light industrial facilities. If your existing three-phase equipment runs on 230V, stay on 230V.
- When to Choose 460V: Your shop is on 460V three-phase service, which is standard in heavy commercial and industrial facilities. At 460V, the compressor draws approximately half the amperage of the 230V version for the same horsepower, allowing smaller wire gauge and lower panel loading.
- Dedicated Circuit Required: A 10HP motor draws significant startup amperage. Your electrician needs to size the breaker, wire, and disconnect appropriately for this motor's full-load and locked-rotor amperage. Do not connect this compressor to a shared circuit.
Who This Compressor Is For
- Auto Body and Collision Shops: Running spray guns, DA sanders, and air-fed equipment simultaneously. Rotary screw technology handles the continuous demand that body shop work creates without the pressure drops that plague undersized piston compressors.
- Fleet Maintenance Shops: Truck fleets, bus lines, construction equipment fleets — shops that run impact wrenches, air ratchets, and pneumatic tools across multiple bays throughout the day.
- Low-Ceiling Shops: The horizontal configuration specifically suits shops where vertical clearance is limited. If you have a 9-foot ceiling or structural beams that limit where you can put a tall unit, the HG11 is the practical choice.
- Tire and Wheel Centers: High-cycle air tool use and rapid tire inflation benefit from continuous-duty rotary screw technology.
- Fabrication and Light Manufacturing: Any shop running pneumatic tools continuously through a shift.
R1038HG11 vs. R10312VG11 — Horizontal vs. Vertical Tank
- Same Core Technology: Both the R1038HG11 (horizontal) and R10312VG11 (vertical) are 10HP, 3-phase rotary screw compressors. The compressor element and motor are comparable. You are choosing tank orientation based on your shop's physical constraints.
- Horizontal (HG11) — $8,386.95: Lower profile, longer floor footprint. Suits low-ceiling shops. Approximately $640 less than the vertical version.
- Vertical (VG11) — $9,027.00: Taller, smaller floor footprint. Suits shops with standard ceiling height and limited floor area. Better if you need to fit the compressor into a corner.
- Buying Decision: Measure your ceiling. If height is not a constraint and floor space is limited, go vertical. If ceiling height is a concern or you prefer the lower profile for any reason, go horizontal and save $640.
Technical Specifications
- Horsepower: 10 HP
- Phase: 3-Phase
- Available Voltages: 230V or 460V (specify at time of order)
- Tank Orientation: Horizontal
- Tank Configuration: Gauge-equipped receiver tank
- Drive Type: Rotary screw
- Duty Cycle: 100% continuous
- Model Number: R1038HG11
- Price: $8,386.95
- Additional Specifications: Complete manufacturer specifications including CFM output, tank capacity (gallons), dimensions, and weight are pending. Contact 866-217-0063 for full specs before ordering.
Why Buy From OEM Diagnostic Tools?
- Specialist Since 2016: We supply professional shops with diagnostic equipment and shop tools. We do not sell consumer hardware. Our team understands what production shops actually need.
- Free Shipping: Free freight shipping to the contiguous United States on this unit.
- Free Technical Support: Call 866-217-0063 with questions about voltage configuration, installation planning, or application fit. We will help you confirm the right compressor for your shop before you order.
- Full Manufacturer Warranty: Sold with Cast Air's full manufacturer warranty. We handle warranty support.
- Straight Talk on Fit: If your shop needs more CFM than this unit provides, or if the horizontal tank is not the right orientation for your space, we will tell you. We recommend the right product, not the most expensive one.
Call 866-217-0063 for quick answers and help!
