Castair 43HP 3-Phase Rotary Screw Air Compressor Horizontal 230V — R433HP60-230
The Castair R433HP60-230 is a 3-phase, 230-volt horizontal rotary screw air compressor with a 60-gallon receiver tank. Based on the model number structure, this is a 4HP-class (43 designates approximately 4HP) 3-phase unit paired with a 60-gallon horizontal tank. It operates on 230V 3-phase power, which is standard in most shops with 3-phase service. The horizontal tank layout keeps the overall height low — useful when ceiling clearance is limited or when a lower center of gravity is preferred for stability.
Note: The R433HP60-230 was not listed individually on Castair's website at time of writing. Specifications below are based on Castair's rotary screw product line conventions and model number data. Contact us at 866-217-0063 for confirmed specs and current pricing.
Horizontal Tank Configuration — When It Makes Sense
- Low ceiling clearance: A horizontal unit with an 80-gallon tank typically runs 44" tall versus 70" for a vertical. When headroom is limited, horizontal is the practical choice.
- Stable footprint: Horizontal units sit lower to the ground. In environments with vibration or on uneven floors, the lower center of gravity helps.
- Longer footprint: The tradeoff is floor length. A horizontal 80-gallon unit runs roughly 64" long. Measure your available wall space before choosing horizontal over vertical.
- Condensate drainage: Horizontal tanks drain from one end. Ensure your auto drain or manual drain is accessible in your installation location.
3-Phase 230V Operation
- Confirm your power supply: 3-phase 230V and 3-phase 460V are different voltage systems. This unit is wired for 230V. Do not attempt to run on 460V service without the appropriate transformer or motor rewinding.
- Typical amperage: A 4HP 3-phase 230V motor draws approximately 11-13 amps per leg at full load. Wire sizing and breaker selection should be confirmed with a licensed electrician based on your circuit length.
- Pre-wired magnetic starter: Castair ships these units with the magnetic starter and controls mounted and wired. You connect the incoming 3-phase power — that's it.
Castair Rotary Screw Build Quality
- 100% duty cycle: Rotary screw compressors are designed for continuous operation. Unlike piston compressors with duty cycle limits, this unit can run as long as demand requires.
- Single solenoid control: One solenoid operates the air end. No computerized control panels, no lockout codes. Simple, field-repairable design.
- Industrial 1725 RPM motor: Full 15% service factor or higher. Runs cooler and lasts longer than consumer motors at comparable output.
- Cast iron construction: Castair builds with cast iron throughout — heads, cylinders, all primary components. Handles the thermal cycling of real shop use.
- Built-in air/oil separator with spin-on filter: Keeps oil out of your air lines. Spin-on replacement — same concept as an oil filter.
- Off-shelf V-belts with adjustable tensioner: Standard belts. Available at any industrial supply.
- Air/oil lines in copper pipe: No plastic hose. Copper stands up to heat and vibration.
- Air-cooled aftercooler/oil cooler standard: Removable for cleaning. Critical for oil temperature management and reducing moisture carryover.
- Factory-filled with Cast-Lube synthetic oil: 4,000-hour or one-year change interval.
- Hour meter standard: Track actual run hours for maintenance scheduling.
- 10-minute shutdown timer: Saves electricity when air demand stops.
- Pressure options: 135 PSI standard, 150 or 175 PSI available.
- ASME-rated tank: American Society of Mechanical Engineers certified. Required for insurance and code compliance in most commercial installations.
- 2-year warranty on air end, electric motor, and tank
Available Configurations — 3-Phase Rotary Screw Lineup with Tanks
- 5HP, 3-Phase, 80 Gal Vertical (R538VP75): 20 CFM @ 100 PSI — 470 lbs — 34×26×70"
- 5HP, 3-Phase, 80 Gal Horizontal (R538HP75): 20 CFM @ 100 PSI — 470 lbs — 64×32×44"
- 7.5HP, 3-Phase, 80 Gal Vertical (R738VP75): 31 CFM @ 100 PSI — 546 lbs — 34×26×70"
- 7.5HP, 3-Phase, 80 Gal Horizontal (R738HP75): 31 CFM @ 100 PSI — 546 lbs — 64×32×44"
- 460V variant: R433HP60-460 — same compressor, wired for 460V 3-phase
When Does a Shop Need This vs. Stepping Up or Down?
- Right for: Small commercial shop with 3-phase power, moderate air demand, ceiling height constraints that favor a horizontal tank. Body shop doing occasional air tool work, small service shop, or lube shop with 3-phase service.
- Step up to 5HP if: You're running multiple air tools simultaneously or have continuous demand. The 5HP 3-phase units deliver 20 CFM @ 100 PSI — meaningfully more output for production environments.
- Choose 460V variant (R433HP60-460) if: Your facility runs 460V 3-phase. Using the wrong voltage unit will damage the motor and void the warranty.
- Horizontal vs. vertical: Choose horizontal for low ceiling installations. Choose vertical to minimize floor footprint when ceiling clearance is adequate.
Technical Specifications
- Model: R433HP60-230
- Horsepower: Approximately 4HP (verify with Castair)
- Phase: 3-Phase
- Voltage: 230V
- Tank: 60 gallon, horizontal, ASME-rated
- Compressor Type: Rotary screw
- Duty Cycle: 100%
- Standard Pressure: 135 PSI (150 or 175 PSI available)
- Lubrication: Oil-injected, synthetic lubricant (4,000-hour / 1-year interval)
- Drive: Belt drive, standard V-belts
- Motor Speed: 1725 RPM industrial motor
- Controls: Single solenoid, pre-wired magnetic starter, hour meter, 10-minute auto shutdown
- Warranty: 2-year on air end, motor, and tank
- Manufacturer: Castair (Spicer, Minnesota)
CFM, exact dimensions, and weight pending manufacturer confirmation. Call 866-217-0063 for current data sheet.
What's in the Box
- Castair rotary screw compressor assembly mounted on 60-gallon horizontal ASME tank
- Pre-wired magnetic starter and controls
- Air/oil separator with spin-on filter
- Air-cooled aftercooler/oil cooler
- Hour meter
- Pre-filled with Cast-Lube synthetic oil
Why Buy From Air Compressor Factory Direct?
- Castair specialists: We stock and know the full Castair lineup — voltage variants, tank configurations, and accessories
- Free shipping on qualifying orders
- Free technical support: Call 866-217-0063 — talk to someone familiar with 3-phase installations and rotary screw systems
- Full manufacturer warranty honored and supported
- Honest sizing guidance: We'll confirm whether this unit fits your actual CFM needs before you order
Call 866-217-0063 for quick answers and help!
