Why a quality air compressor motor matters:

A properly matched compressor motor:

• Delivers the starting torque your pump needs to come up to pressure
• Reduces nuisance breaker trips, overheating, and slow starts
• Protects your pump, belts, and controls from overload
• Cuts downtime and keeps air tools, blast cabinets, and production lines on schedule

What you’ll find in this collection:

Our air compressor motors are chosen around the most common builds used in shops and plants:

• Horsepower range: from small under 5 hp shop units up through larger hp compressor motors for serious industrial systems
• Voltages: popular 115 / 208–230 volt single-phase options, plus 208–230 / 460 volt three-phase motors for heavier installations
• Speed options: standard about 1750 rpm and about 3450 rpm to match pulley ratios and pump requirements
• Nema frame sizes: common 56, 56h, 143t, 145t and other compressor-duty frames so mounting and alignment stay straightforward
• Enclosure types: tefc (totally enclosed fan cooled) for dusty, dirty, or damp spaces and odp (open drip proof) for cleaner indoor areas
• Start and run designs: capacitor-start / capacitor-run and other compressor-duty styles built to handle frequent starts under load

If your current motor’s label is readable, there’s a very good chance we have a direct-fit replacement compressor motor or a better-performing upgrade sitting in this collection.

How to choose the right air compressor motor:

Before you add anything to your cart, grab the data plate on your existing motor. That tag tells you almost everything you need:

1. Horsepower (HP) – match your existing rating so the pump is neither starved nor overdriven.
2. Voltage and phase – confirm 115, 208–230, or 460 volt, and whether you’re on single-phase or three-phase power.
3. Speed (RPM) – usually around 1750 or around 3450 rpm. This controls pulley sizing and pump speed.
4. Frame size – look for 56, 56h, 143t, 145t or similar; this affects mounting bolt pattern and shaft height.
5. Shaft size – diameter and length matter for pulley fit and alignment.
6. Enclosure style – pick tefc for harsher, dusty environments; odp is fine for clean, dry indoor settings.

If you’re changing hp, switching from single-phase to three-phase, or building a new system, this collection is also where you’ll find motor upgrades for better efficiency and duty cycle.

Why buy air compressor motors from warthog

• Focused on compressed air: motors selected specifically for compressor duty, not random general-purpose leftovers
• Real tech support: you can reach a compressor specialist who can help you match data plates, troubleshoot failures, and recommend an upgrade path
• Serious uptime mindset: options that support frequent starts, continuous shop use, and demanding industrial cycles
• Clear, practical spec details: product pages that call out hp, voltage, rpm, frame, and enclosure up front so you can compare quickly

Ready to replace that tired motor?

Scroll through the air compressor motors below, match your hp, voltage, rpm, frame, and enclosure, and drop the right one into your cart.

Get a properly matched compressor-duty motor on your system and turn your compressed air from “barely hanging on” back into a reliable power source for your tools, your process, and your business.