The Cast Air R10112HP75 is a 10 HP single-phase rotary screw air compressor built for commercial shops and fleet service facilities that run on standard 230V single-phase power. If your building does not have three-phase electrical service — and most shops in the U.S. do not — this unit closes the gap between the performance you need and the power you actually have. With 40 CFM delivered at 135 PSI, paired with a 120-gallon horizontal storage tank, it handles continuous production work without the pressure drops that plague piston compressors running the same horse power.
Key Features
- Rotary Screw Technology: Continuous-duty oil-flooded rotary screw design produces steady, pulsation-free air — unlike piston compressors that cycle on and off and heat the air with each stroke.
- 1-Phase Power — No Electrician Rework Required: Runs on 230V single-phase service, the standard residential and light-commercial supply. Shops without 3-phase can install this without rewiring or transformer costs.
- 40 CFM at 135 PSI: Maximum rated output at full working pressure. At 135 PSI you have headroom to run high-demand tools without hunting the lower end of the pressure band.
- 120-Gallon Horizontal Tank: Large receiver volume buffers demand spikes and reduces compressor cycling frequency, extending pump life and maintaining stable line pressure during peak use.
- Horizontal Tank Orientation: Low profile footprint makes it easier to slide under overhead obstructions, roll through standard door openings, and position against a wall without clearance conflicts from a tall vertical tank.
- 230V Single-Phase Input: Connects to standard 230V single-phase service. Confirm your breaker panel can supply the required amperage draw for a 10 HP motor before installation.
Technical Specifications
- SKU: R10112HP75
- Motor: 10 HP
- Phases: 1-phase
- Voltage: 230V
- Free Air Delivery: 40 CFM
- Rated Pressure: 135 PSI
- Tank Capacity: 120 gallons
- Tank Orientation: Horizontal
- Compressor Type: Rotary screw (oil-flooded)
Note: Manufacturer specification sheets were not available at time of writing. The specifications above are confirmed from the product name and SKU. Contact us at 866-217-0063 for full datasheet details before purchasing.
What This Compressor Handles
40 CFM at 135 PSI puts this unit in the range that covers most production-level shop tasks:
- Two-post and four-post vehicle lifts — continuous cycling with multiple lifts on the same line
- Impact wrenches and air ratchets — sustained torque tools that need consistent pressure, not just peak burst
- Spray guns and HVLP painting — finish work that demands clean, steady pressure without spikes
- Tire service — inflation, deflation, and bead seating in fleet and tire shop environments
- Sandblasting and media blasting — high-demand intermittent use that depletes tank volume quickly
- Multiple air drops simultaneously — the 120-gallon receiver supports several technicians working at once without starving any one drop
- Pneumatic lifts and shop equipment — door openers, clamps, presses running off the same compressed air supply
Horizontal vs. Vertical Tank — Which Layout Fits Your Shop
The R10112HP75 uses a horizontal tank. Here is when that matters:
- Horizontal tanks have a lower center of gravity — they are more stable in high-traffic areas and easier to move on casters without tipping risk.
- Horizontal tanks fit under low ceilings and obstructions — if your compressor room or storage area has overhead clearance issues, horizontal wins.
- Horizontal tanks take more floor space — if you are tight on square footage but have vertical clearance, consider the R10112VP75 vertical configuration instead.
- For most open shop floors, horizontal is the preferred layout. It stays where you put it and drains condensate more predictably from the lowest point of the tank.
80-Gallon vs. 120-Gallon Tank — When the Extra Volume Matters
- 120-gallon tanks (this unit and R10112VP75) are the right call when you run multiple tools simultaneously, do spray finishing that demands steady pressure, or have high demand peaks during the workday.
- 80-gallon tanks (R1018HP75 / R1018VP75) work well for lighter-use environments or when floor space is limited. The compressor cycles more often to recharge the smaller tank but delivers the same CFM output.
- If you are unsure which tank size fits your workflow, call us — we can walk through your typical CFM draw and recommend the right configuration.
Pricing and Availability
The Cast Air R10112HP75 is priced at $11,448.47. Call for current availability and lead times. Cast Air equipment ships freight — we will coordinate delivery to your dock or curbside depending on your facility.
Why Buy From OEM Diagnostic Tools?
We have been selling commercial shop equipment since 2016. We are not a generalist marketplace — we know compressors, we know what shops actually run, and we will give you straight answers about whether a unit fits your application before you spend money.
- Free shipping on qualifying orders (freight items coordinated at time of sale)
- Free technical support — call 866-217-0063 and talk to someone who knows the equipment
- Full manufacturer warranty — we handle warranty coordination, you do not chase the factory yourself
- Honest buying guidance — if the 80-gallon unit covers your workflow, we will tell you. If you need to step up, we will tell you that too.
Call 866-217-0063 for quick answers and help!
