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5 HP Electric Motor for Air Compressor | Single-Phase | 208-230V | 3450 RPM | 7/8-In. Keyed Shaft | Castair

Original price $710.00 - Original price $710.00
Original price
$710.00
$710.00 - $710.00
Current price $710.00
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What Sets Us Apart
12-Month Warranty (Industry-Leading Coverage)
Free Shipping (Lower 48 US States)
• Comes with hoses, fittings, and couplers (Jobsite ready)
  • 5 HP single-phase power
  • 3450 RPM operating speed
  • 1.15 service factor
  • 7/8-inch keyed shaft
  • Open drip proof design
  • TEFC cooling system
  • UL and CSA listed
  • Explosion proof certified
  • 45 pound construction
  • 208-230V electrical requirements
Overview

When your air compressor goes down, you need a replacement motor that delivers reliable performance without the hassle of hunting for compatible parts. This 5 HP single-phase electric motor from Castair provides the power and dependability that contractors, shop owners, and facility managers count on for critical compressed air applications.

Built to industrial standards, this motor operates at 3450 RPM with a robust 7/8-inch keyed shaft that accommodates standard couplings and pulleys. The single-phase design eliminates the need for three-phase electrical service, making it practical for smaller shops, remote job sites, and facilities where only 208-230V single-phase power is available.

The 1.15 service factor gives you 15% additional capacity above the rated 5 horsepower, providing peace of mind during peak demand periods. This extra margin means you won't damage the motor during temporary overloads that happen in real-world applications.

Forge Claw stocks this Baldor motor because it represents the quality and reliability our customers demand for mission-critical equipment. Whether you're rebuilding an aging compressor or designing a new installation, this motor provides years of dependable service with minimal maintenance requirements.

The open drip proof design protects internal components while allowing proper ventilation for optimal cooling. This balanced approach handles typical shop environments where moisture and debris are present without compromising thermal management or performance.

Safety certifications include UL and CSA listings, meeting electrical standards for commercial and industrial installations. These approvals simplify permitting and inspection processes while ensuring your installation meets local electrical codes without complications.

TEFC construction provides superior protection against dust, dirt, and airborne contaminants that could otherwise damage internal components. The totally enclosed fan cooled design maintains efficient heat dissipation while keeping harmful particles out of the motor housing.

At 45 pounds, this motor balances substantial construction with manageable installation weight. The compact footprint fits standard mounting configurations while the robust build quality ensures vibration resistance during continuous operation.

The predictable 23.5-21.5 amperage draw at 208-230V makes circuit planning and breaker sizing straightforward. Understanding these electrical requirements upfront prevents nuisance trips and electrical issues that can sideline operations.

Castair's precision manufacturing processes and quality materials translate directly to reduced maintenance and extended service life. The attention to construction detail means fewer unexpected failures and more uptime for your critical compressed air systems.

For air compressor applications, the 3450 RPM speed perfectly matches standard pump requirements for efficient compression. You won't need speed reduction systems or complex drive arrangements that add cost and potential failure points.

Professional installers appreciate the straightforward mounting and connection process that follows industry standards. Standard shaft configuration and electrical connections reduce installation time and get your equipment back online quickly.

Beyond air compressors, this versatile motor adapts to various industrial applications where 5 HP single-phase power is required. From shop equipment to processing machinery, the proven design handles diverse operational demands with consistent performance.

The explosion proof certification expands application possibilities for environments where flammable vapors or gases may be present. This certification provides additional flexibility for installations in challenging industrial environments.

Specifications
  • Motor Type: 5 HP Single-Phase Electric Motor
  • Voltage: 208-230V
  • Amperage: 23.5-21.5A
  • Speed: 3450 RPM
  • Service Factor: 1.15
  • Shaft Size: 7/8-inch diameter with key
  • Frame: 56HZ
  • Weight: 45 pounds
  • Design: Open Drip Proof (ODP)
  • Enclosure: TEFC (Totally Enclosed Fan Cooled)
  • Safety Ratings: UL and CSA Listed
  • Construction: Explosion Proof Certified
  • Frequency: 60 Hz
  • Mounting: Standard industrial mounting configuration
  • Manufacturer: Castair
Features
  • 5 HP Single-Phase Design — eliminates the need for expensive three-phase electrical service, making installation possible in locations with standard residential or light commercial power supplies
  • 3450 RPM Operating Speed — matches standard air compressor pump requirements perfectly for direct drive applications without speed reduction systems
  • 1.15 Service Factor — provides 15% additional capacity above rated horsepower for handling temporary overloads and peak demand periods without motor damage
  • 7/8-Inch Keyed Shaft — accommodates standard couplings and pulleys with secure, anti-slip connection that prevents slippage during high-torque operations
  • Open Drip Proof Construction — protects internal components from moisture and debris while maintaining proper ventilation for optimal operating temperatures
  • TEFC Enclosure — totally enclosed fan cooled design prevents contamination from dust and particles while ensuring efficient heat dissipation for extended motor life
  • UL and CSA Safety Listings — meets rigorous electrical safety standards for commercial and industrial installations, simplifying code compliance and inspection processes
  • Explosion Proof Certification — approved for use in hazardous environments where flammable vapors or gases may be present, expanding installation possibilities
Benefits

This motor eliminates the time-consuming search for compatible replacement parts during air compressor rebuilds. Standard specifications and mounting configuration mean you can focus on getting your equipment operational instead of hunting for hard-to-find components.

The single-phase design saves thousands of dollars in electrical upgrades by working with existing power infrastructure. You won't need costly three-phase service installations or phase converters that add complexity and potential failure points to your system.

Castair's industrial-grade construction reduces unplanned downtime through superior durability and reliable performance. The robust design handles demanding applications while requiring minimal maintenance, keeping your compressed air system running when you need it most.

The 1.15 service factor provides real protection during peak usage periods that occur in busy shops and job sites. This extra capacity margin prevents motor damage during temporary overloads, extending equipment life and preventing costly emergency replacements.

TEFC construction keeps your motor running in dusty, dirty environments where open motors would fail prematurely. This protection translates to longer service intervals and reduced maintenance costs over the motor's operational life.

Professional installation is faster and more straightforward thanks to standard mounting patterns and electrical connections. Reduced installation time means lower labor costs and quicker return to productive operations.

The explosion proof certification opens up revenue opportunities in industrial environments where standard motors aren't permitted. This versatility allows you to take on jobs in chemical plants, refineries, and other facilities with strict safety requirements.

Additional Information

This motor is ideal for contractors, shop owners, facility managers, and maintenance professionals who need reliable compressed air for tools, pneumatic equipment, and industrial processes. The single-phase compatibility makes it particularly valuable for smaller operations and remote locations where three-phase power isn't available.

The 7/8-inch keyed shaft accommodates most standard air compressor pump configurations without modifications. Before installation, verify your pump's shaft requirements and coupling specifications to ensure proper fitment and alignment.

For optimal performance and longevity, ensure adequate ventilation around the motor and keep air intake areas clean. Regular inspection of electrical connections and proper voltage supply help maintain peak efficiency and prevent premature failure.

Routine maintenance involves periodic cleaning of external surfaces and verification of mounting bolt tightness. The enclosed design minimizes internal maintenance requirements while the quality construction provides years of reliable service with minimal intervention.

Warranty Info

Manufactured by Castair, this product is covered under the manufacturer's standard warranty for defects in materials and workmanship. Contact Forge Claw for full warranty details and authorized service options. Order your 5 HP Single-Phase Electric Motor for Air Compressor | 208-230V | 3450 RPM | 7/8-In. Keyed Shaft | Castair from Forge Claw today. Multiple financing options are available for qualified buyers.

What CFM and PSI does this compressor deliver?

This is actually a replacement motor for air compressors, not a complete compressor system. The motor itself doesn't determine CFM or PSI output - those specifications depend on the compressor pump it drives. This 5 HP motor operating at 3450 RPM provides the power needed to drive various compressor pumps that can deliver different CFM and PSI ratings based on their design. When paired with appropriate pump configurations, motors of this power class typically support compressors producing anywhere from 15-25 CFM at 175 PSI, though exact output depends entirely on the pump specifications. The motor's 1.15 service factor ensures reliable operation even during peak demand periods when your compressor is working hardest. For determining your system's actual CFM and PSI capabilities, you'll need to reference the specifications of your compressor pump. This motor provides consistent, reliable power to drive whatever pump configuration your application requires. Forge Claw offers multiple financing options for qualified buyers.

What air tools can I run with this compressor?

Since this is a replacement motor rather than a complete compressor, the air tools you can operate depend on the compressor pump this motor drives and your air tank capacity. However, a properly configured system with this 5 HP motor typically provides sufficient power for most professional air tools. You can generally run impact wrenches, pneumatic drills, air sanders, spray guns, nail guns, air hammers, and blow guns effectively. The motor's robust 3450 RPM speed and 1.15 service factor ensure consistent performance even when operating multiple tools or high-demand equipment. For continuous operation of air-hungry tools like sanders or grinders, ensure your compressor pump and tank combination can maintain adequate CFM at your required PSI. The motor's reliable single-phase design eliminates power interruptions that could affect tool performance. Professional contractors often use systems powered by motors of this class for framing, automotive work, woodworking, and general construction applications where reliable compressed air is essential for productivity.

Is this compressor portable enough for job sites?

This 5 HP electric motor weighs 45 pounds and requires 208-230V single-phase electrical service, making it suitable for stationary installations rather than portable job site use. The motor is designed for permanent or semi-permanent mounting in shops, garages, or facilities with established electrical infrastructure. While the single-phase power requirement eliminates the need for three-phase service found in many commercial buildings, you'll still need access to appropriate 230V outlets and proper electrical circuits. The motor's substantial construction prioritizes durability and performance over portability. For job sites, you'd typically use this motor in workshop-based compressors that remain stationary while portable tools and hoses bring compressed air to work areas. The robust build quality and reliable operation make it ideal for contractors who need dependable shop equipment supporting their mobile operations. Consider this motor for base shop installations where you can properly mount and wire the complete compressor system for long-term reliable service.

What maintenance does this compressor require?

This electric motor requires minimal maintenance compared to gas-powered alternatives, but regular attention ensures long service life. Check and clean the cooling fan and ventilation openings monthly to prevent overheating, as the TEFC design relies on proper airflow for temperature control. Inspect electrical connections quarterly for tightness and signs of corrosion, especially in humid environments. The open drip proof construction handles typical shop conditions well but benefits from keeping the motor area clean and dry. Lubricate bearings according to the manufacturer's schedule, typically annually under normal use or more frequently in dusty conditions. Monitor amperage draw periodically to identify potential issues before they cause failures. The explosion-proof certification and UL listing ensure safe operation when properly maintained. Unlike complete compressor systems, this motor doesn't require oil changes, air filter replacements, or valve adjustments. However, when installed as part of a complete compressor, follow the pump manufacturer's maintenance schedule for optimal system performance. The motor's quality construction minimizes unexpected failures when basic maintenance procedures are followed consistently.

How does tank size affect how long I can run tools continuously?

Tank size significantly impacts continuous tool operation by providing stored compressed air between motor cycles, though this motor itself doesn't include a tank. Larger tanks store more compressed air, allowing longer tool operation before the motor must restart to refill the system. With this 5 HP motor driving an appropriately sized pump, a 60-gallon tank typically provides several minutes of continuous tool use, while an 80-120 gallon tank extends that significantly. The motor's 1.15 service factor ensures reliable restarts even during demanding cycles. For tools requiring continuous air flow like sanders or spray guns, larger tanks reduce motor cycling frequency, extending both motor and pump life. Smaller tanks work fine for intermittent tool use like nail guns or impact wrenches that operate in short bursts. The motor's robust construction handles frequent start-stop cycles, but larger tanks reduce this stress while improving overall system performance. Consider your specific tool requirements and duty cycle when selecting tank size, as this motor provides ample power for various tank configurations from 60-120 gallons in typical shop applications.

Overview

When your air compressor goes down, you need a replacement motor that delivers reliable performance without the hassle of hunting for compatible parts. This 5 HP single-phase electric motor from Castair provides the power and dependability that contractors, shop owners, and facility managers count on for critical compressed air applications.

Built to industrial standards, this motor operates at 3450 RPM with a robust 7/8-inch keyed shaft that accommodates standard couplings and pulleys. The single-phase design eliminates the need for three-phase electrical service, making it practical for smaller shops, remote job sites, and facilities where only 208-230V single-phase power is available.

The 1.15 service factor gives you 15% additional capacity above the rated 5 horsepower, providing peace of mind during peak demand periods. This extra margin means you won't damage the motor during temporary overloads that happen in real-world applications.

Forge Claw stocks this Baldor motor because it represents the quality and reliability our customers demand for mission-critical equipment. Whether you're rebuilding an aging compressor or designing a new installation, this motor provides years of dependable service with minimal maintenance requirements.

The open drip proof design protects internal components while allowing proper ventilation for optimal cooling. This balanced approach handles typical shop environments where moisture and debris are present without compromising thermal management or performance.

Safety certifications include UL and CSA listings, meeting electrical standards for commercial and industrial installations. These approvals simplify permitting and inspection processes while ensuring your installation meets local electrical codes without complications.

TEFC construction provides superior protection against dust, dirt, and airborne contaminants that could otherwise damage internal components. The totally enclosed fan cooled design maintains efficient heat dissipation while keeping harmful particles out of the motor housing.

At 45 pounds, this motor balances substantial construction with manageable installation weight. The compact footprint fits standard mounting configurations while the robust build quality ensures vibration resistance during continuous operation.

The predictable 23.5-21.5 amperage draw at 208-230V makes circuit planning and breaker sizing straightforward. Understanding these electrical requirements upfront prevents nuisance trips and electrical issues that can sideline operations.

Castair's precision manufacturing processes and quality materials translate directly to reduced maintenance and extended service life. The attention to construction detail means fewer unexpected failures and more uptime for your critical compressed air systems.

For air compressor applications, the 3450 RPM speed perfectly matches standard pump requirements for efficient compression. You won't need speed reduction systems or complex drive arrangements that add cost and potential failure points.

Professional installers appreciate the straightforward mounting and connection process that follows industry standards. Standard shaft configuration and electrical connections reduce installation time and get your equipment back online quickly.

Beyond air compressors, this versatile motor adapts to various industrial applications where 5 HP single-phase power is required. From shop equipment to processing machinery, the proven design handles diverse operational demands with consistent performance.

The explosion proof certification expands application possibilities for environments where flammable vapors or gases may be present. This certification provides additional flexibility for installations in challenging industrial environments.

Specifications
  • Motor Type: 5 HP Single-Phase Electric Motor
  • Voltage: 208-230V
  • Amperage: 23.5-21.5A
  • Speed: 3450 RPM
  • Service Factor: 1.15
  • Shaft Size: 7/8-inch diameter with key
  • Frame: 56HZ
  • Weight: 45 pounds
  • Design: Open Drip Proof (ODP)
  • Enclosure: TEFC (Totally Enclosed Fan Cooled)
  • Safety Ratings: UL and CSA Listed
  • Construction: Explosion Proof Certified
  • Frequency: 60 Hz
  • Mounting: Standard industrial mounting configuration
  • Manufacturer: Castair
Features
  • 5 HP Single-Phase Design — eliminates the need for expensive three-phase electrical service, making installation possible in locations with standard residential or light commercial power supplies
  • 3450 RPM Operating Speed — matches standard air compressor pump requirements perfectly for direct drive applications without speed reduction systems
  • 1.15 Service Factor — provides 15% additional capacity above rated horsepower for handling temporary overloads and peak demand periods without motor damage
  • 7/8-Inch Keyed Shaft — accommodates standard couplings and pulleys with secure, anti-slip connection that prevents slippage during high-torque operations
  • Open Drip Proof Construction — protects internal components from moisture and debris while maintaining proper ventilation for optimal operating temperatures
  • TEFC Enclosure — totally enclosed fan cooled design prevents contamination from dust and particles while ensuring efficient heat dissipation for extended motor life
  • UL and CSA Safety Listings — meets rigorous electrical safety standards for commercial and industrial installations, simplifying code compliance and inspection processes
  • Explosion Proof Certification — approved for use in hazardous environments where flammable vapors or gases may be present, expanding installation possibilities
Benefits

This motor eliminates the time-consuming search for compatible replacement parts during air compressor rebuilds. Standard specifications and mounting configuration mean you can focus on getting your equipment operational instead of hunting for hard-to-find components.

The single-phase design saves thousands of dollars in electrical upgrades by working with existing power infrastructure. You won't need costly three-phase service installations or phase converters that add complexity and potential failure points to your system.

Castair's industrial-grade construction reduces unplanned downtime through superior durability and reliable performance. The robust design handles demanding applications while requiring minimal maintenance, keeping your compressed air system running when you need it most.

The 1.15 service factor provides real protection during peak usage periods that occur in busy shops and job sites. This extra capacity margin prevents motor damage during temporary overloads, extending equipment life and preventing costly emergency replacements.

TEFC construction keeps your motor running in dusty, dirty environments where open motors would fail prematurely. This protection translates to longer service intervals and reduced maintenance costs over the motor's operational life.

Professional installation is faster and more straightforward thanks to standard mounting patterns and electrical connections. Reduced installation time means lower labor costs and quicker return to productive operations.

The explosion proof certification opens up revenue opportunities in industrial environments where standard motors aren't permitted. This versatility allows you to take on jobs in chemical plants, refineries, and other facilities with strict safety requirements.

Additional Information

This motor is ideal for contractors, shop owners, facility managers, and maintenance professionals who need reliable compressed air for tools, pneumatic equipment, and industrial processes. The single-phase compatibility makes it particularly valuable for smaller operations and remote locations where three-phase power isn't available.

The 7/8-inch keyed shaft accommodates most standard air compressor pump configurations without modifications. Before installation, verify your pump's shaft requirements and coupling specifications to ensure proper fitment and alignment.

For optimal performance and longevity, ensure adequate ventilation around the motor and keep air intake areas clean. Regular inspection of electrical connections and proper voltage supply help maintain peak efficiency and prevent premature failure.

Routine maintenance involves periodic cleaning of external surfaces and verification of mounting bolt tightness. The enclosed design minimizes internal maintenance requirements while the quality construction provides years of reliable service with minimal intervention.

Warranty Info

Manufactured by Castair, this product is covered under the manufacturer's standard warranty for defects in materials and workmanship. Contact Forge Claw for full warranty details and authorized service options. Order your 5 HP Single-Phase Electric Motor for Air Compressor | 208-230V | 3450 RPM | 7/8-In. Keyed Shaft | Castair from Forge Claw today. Multiple financing options are available for qualified buyers.