9 Best Replacement Motors for Ingersoll Rand Air Compressors (November 2026)
The best Ingersoll Rand air compressor replacement motors include the VEVOR 5HP Air Compressor Electric Motor for 5 HP 230V replacements, the VEVOR Air Compressor Motor for quieter oil-free compressor systems, and the VEVOR 2HP Air Compressor Electric Motor for dual-voltage 2 HP setups.
On this page (5 sections)
The best Ingersoll Rand air compressor motor replacement is the one that matches the original horsepower, voltage, frame, shaft and rotation. The VEVOR 5HP motor is the strongest pick here for a compatible 230V, 56HZ-frame compressor with a 7/8 in keyed shaft.
That match matters because a motor that bolts on but runs the wrong way, draws too much current, or sits too far from the pulley will not do the job properly. A correct replacement should keep the compressor working as intended without forcing changes to the mounting or wiring.
Horsepower is only the starting point. Frame size controls mounting, shaft diameter and length control pulley fit and belt alignment, and voltage and amperage control the electrical match.
Rotation also deserves attention before you order. Some motors can be reversed for clockwise or counterclockwise use, while others have a fixed direction that must suit the pump.
If your old motor has failed, compare it with our guide to the Best Replacement Motor For Air Compressor before you narrow the list. Photograph the nameplate and measure the shaft and mounting points while you can still check them against the old unit.
Even a well matched motor may still need the right circuit breaker, wiring and pulley position. Confirm those details with the motor instructions and, where needed, a qualified electrician.
You can then rule out motors with the wrong shaft, frame or voltage early, instead of relying on horsepower alone.
Our picks at a glance
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1
Best for 5 HP 230V replacementsVEVOR 5HP Air Compressor Electric Motor
9.7/10 our score
See it on Amazon -
2
-
3
Best for dual-voltage 2 HP setupsVEVOR 2HP Air Compressor Electric Motor
9.5/10 our score
See it on Amazon
- 4
Check itVEVOR 3.7HP Air Compressor Motor
Best for mid-power 230V compressors - 5
Check itVEVOR 5HP SPL Air Compressor Electric Motor
Best for a lower-amp 5 HP frame - 6
Best for a 56-frame alloy-steel motorCheck it - 7
Check itVEVOR 7.5HP Air Compressor Electric Motor
Best for high-power 184T compressors - 8
Check itCentury 3D 5 HP 3450 RPM R56Y Frame
Best for a traditional 5 HP 56Y frame - 9
Check itJIAXINPRO 2HP Air Compressor Motor
Best for dual-voltage home workshops
The best Ingersoll Rand air compressor motor replacements
The VEVOR 5HP motor leads this group because its 5 HP, 230V, 56HZ frame, 25 amp draw and 7/8 in keyed shaft cover a common replacement pattern. The other motors suit different horsepower, voltage, shaft and frame requirements.
Our score weighs specs, features and buyer feedback against the needs of this search. We checked the stated motor data, then compared each option with the measurements that control replacement fit.
VEVOR 5HP Air Compressor Electric Motor: Best for 5 HP 230V replacements
- 5 HP
- 230V
- 25 amps
- 56HZ frame
- 7/8 in keyed shaft
- 3450 RPM
- CW/CCW rotation
This 5 HP motor suits a 230V compressor setup that matches its 56HZ frame and 7/8 in keyed shaft. Its reversible rotation helps when the compressor requires a different direction.
Pros
- 5 HP output
- Reversible CW/CCW rotation
- CSA tested
Cons
- 230V setup only in the stated specifications
- Open drip-proof design needs a clean, dry environment
The VEVOR 5HP Air Compressor Electric Motor is the best fit in this roundup for a 5 HP, 230V compressor that uses a 56HZ frame and 7/8 in keyed shaft. It runs at 3450 RPM and has a 25 amp full-load draw.
The 2.25 in shaft length matters when checking pulley position and belt alignment. A shaft that is too short can leave the pulley poorly supported, while one that is too long can change the belt angle.
The motor supports clockwise and counterclockwise rotation, with counterclockwise as the factory setting. That flexibility can help during installation, but the direction still needs to match the compressor pump.
Its open drip-proof design is intended for clean, dry environments. That means less protection against dust and moisture than a sealed design, so the compressor location matters.
The rolled steel shell is made for steady workshop use, and the package includes one motor and one instruction manual. Keep the manual for the wiring and rotation details.
The stated customer-supplied circuit breaker is 60 amps. Confirm your compressor electrical requirements before installation, and do not treat the 5 HP label as proof that it fits every Ingersoll Rand model.
This is a strong choice when the original motor matches on frame, shaft, voltage and rotation. It is a poor choice when any one of those measurements is different.
Before ordering, check the pulley bore as well as the shaft size. The keyed shaft needs to suit the pulley, and the shaft length needs to place the belt correctly.
VEVOR Air Compressor Motor: Best for quieter oil-free compressor systems
- 2 HP
- 5.2 CFM at 90 PSI
- 145 PSI maximum pressure
- 78 dB
- Oil-free
- 1680 RPM
This is an oil-free 2 HP compressor motor and pump assembly for systems using the stated air delivery and pressure. It suits tire inflation, auto repair, spray painting and woodworking tasks.
Pros
- Oil-free design
- 5.2 CFM at 90 PSI
- 78 dB operating noise
Cons
- Not a like-for-like replacement for every belt-drive motor
- The stated setup is 2 HP
The VEVOR Air Compressor Motor is different from the belt-drive replacement motors around it. It combines a 2 HP oil-free pump and motor with 5.2 CFM at 90 PSI and a maximum pressure of 145 PSI.
That oil-free design removes the need to add or change compressor oil for this pump. It also helps keep the air supply cleaner for tasks where oil carryover would be unwelcome.
At 78 dB, it is a quieter option for a workshop or garage setting. Lower noise can make longer work sessions easier, although it does not remove the need for normal hearing awareness around compressed air equipment.
The stated air delivery suits a small to medium tank setup rather than a large belt-drive compressor. That makes the matching of pump, tank and tool use more important than the horsepower label alone.
Its stated uses include tire inflation, auto repair, spray painting and woodworking nailing. The 145 PSI maximum pressure should still be checked against the tank and tools being used.
Cooling holes and a large fan help the pump shed heat during extended use. Good airflow around the unit remains part of everyday care.
Choose it when your compressor system calls for these 2 HP pump specifications. Do not choose it as a frame-and-shaft replacement for a separate belt-drive motor.
The pump head uses cold-rolled steel and aluminum components in the stated design. That construction is intended to handle wear, but correct mounting and clean intake air still matter.
VEVOR 2HP Air Compressor Electric Motor: Best for dual-voltage 2 HP setups
- 2 HP
- 115/230V
- 20/10 amps
- 56 frame
- 5/8 in keyed shaft
- 3450 RPM
- CW/CCW rotation
The dual-voltage design gives you a choice between 115V and 230V wiring when the compressor and circuit support it. Confirm the 56 frame and 5/8 in shaft before choosing it.
Pros
- 115V and 230V options
- 3450 RPM
- Reversible rotation
Cons
- 2 HP capacity
- The circuit breaker requirement changes with voltage
The VEVOR 2HP Air Compressor Electric Motor suits a 2 HP system where 115V or 230V wiring is useful. It draws 20 amps at 115V or 10 amps at 230V and runs at 3450 RPM.
Dual voltage gives you a choice at installation time. That can suit a home garage on one circuit or a shop wired for higher voltage, provided the compressor and wiring match the setting.
The motor uses a 56 frame, a 5/8 in keyed shaft and a 1.88 in shaft length. Those measurements must match the old motor before you consider the voltage options.
It also supports clockwise and counterclockwise rotation, with counterclockwise as the factory setting. Reversing rotation through the wiring can help match the pump direction.
The open drip-proof design is intended for a clean, dry location. Dust, moisture and direct exposure can shorten the life of this kind of motor.
The required customer-supplied circuit breaker is 50 amps at 115V or 25 amps at 230V. That difference is easy to miss, so voltage and breaker size need to be checked together.
Use the wiring diagram and match the compressor original electrical setup before connecting power. Domestic wiring choices are not a place to guess.
This motor suits a 2 HP compressor with the same frame and shaft pattern. It will not suit a system built around a larger shaft or a higher horsepower motor.
VEVOR 3.7HP Air Compressor Motor: Best for mid-power 230V compressors
- 3.7 HP
- 230V
- 17.2 amps
- 56 frame
- 5/8 in keyed shaft
- 3450 RPM
- CW/CCW rotation
This 3.7 HP motor fills the gap between 2 HP and 5 HP choices. Its 230V, 56 frame and 5/8 in shaft make it a match only for compressors with those same requirements.
Pros
- Mid-range 3.7 HP output
- 3450 RPM
- Reversible rotation
Cons
- 230V only in the stated specifications
- Open drip-proof construction needs a clean, dry location
The VEVOR 3.7HP Air Compressor Motor is the middle-power choice for a 230V compressor needing 3.7 HP and 17.2 amps. It uses a 56 frame, 5/8 in keyed shaft, and 1.88 in shaft length.
That rating suits a compressor designed around 3.7 HP, not a nameplate calling for 2 HP or 5 HP. Check the original rating first.
It runs at 3450 RPM. Shaft length affects pulley position, so give it the same attention as shaft diameter.
Reversible CW/CCW rotation lets you match the required direction. Set the direction before running the compressor under load.
The open drip-proof design suits a clean, dry location. Keep the motor clear of shop dust and damp air to protect internal parts.
The rolled steel shell supports long service life. Keep cooling space clear around the housing so the motor runs at a sensible temperature.
Choose it only when the nameplate calls for 3.7 HP, 230V, and the same frame and shaft measurements. A close horsepower figure is not close enough.
Check the keyed shaft and keyway before ordering. A pulley that does not fit cannot be made safe by force.
This option sits between the 2 HP and 5 HP motors. Its value comes from matching a specific design, not from being a general upgrade.
VEVOR 5HP SPL Air Compressor Electric Motor: Best for a lower-amp 5 HP frame
- 5 HP SPL
- 230V
- 17.6 amps
- 56 frame
- 5/8 in keyed shaft
- 3450 RPM
- CW/CCW rotation
This 5 HP SPL motor differs from the larger-shaft 5 HP options by using a 5/8 in keyed shaft and 1.88 in shaft length. Those mounting measurements must match your compressor.
Pros
- 5 HP output
- 17.6 amp draw
- Reversible rotation
Cons
- 5/8 in shaft may not replace a 7/8 in shaft
- 230V setup
The VEVOR 5HP SPL Air Compressor Electric Motor is the right 5 HP choice when your compressor uses a 5/8 in keyed shaft and 1.88 in shaft length. It runs at 230V, draws 17.6 amps and uses a 56 frame.
That shaft size separates it from the larger 5 HP motors with 7/8 in shafts. Equal horsepower does not mean equal fit.
The 3450 RPM speed and 56 frame need to match the compressor design as well. A motor can be the right power and still be the wrong physical replacement.
Check the pulley bore and shaft length before ordering because equal horsepower does not mean equal fit. The keyway also needs to suit the pulley.
The motor reverses between CW and CCW rotation. That can help with installation, but the compressor still needs the correct direction.
The stated customer-supplied circuit breaker is 45 amps. That figure should be checked against the circuit and the motor instructions.
The open drip-proof design needs a clean, dry environment. The rolled steel shell helps protect the motor, but it does not make it suitable for wet or dusty conditions.
This motor suits a 5 HP compressor built around the smaller shaft pattern. It is not a way to fit a 7/8 in pulley onto a 5/8 in shaft.
Measure the old shaft with care, rather than relying on memory. A small difference here decides whether the replacement fits or does not.
POWORFOL 5 HP Electric Motor: Best for a 56-frame alloy-steel motor
- 5 HP
- 230V
- 20 amps
- 56 frame
- 7/8 in keyed shaft
- 3450 RPM
- CW/CCW rotation
The POWORFOL motor shares the 56 frame, 7/8 in keyed shaft and 2.25 in shaft length used by some 5 HP compressor systems. Its alloy-steel construction weighs 47 lb.
Pros
- 5 HP output
- 56 frame
- Reversible rotation
Cons
- 230V only in the stated specifications
- Open drip-proof design is recommended for clean, dry environments
The POWORFOL 5 HP Electric Motor suits a 230V, 56-frame compressor needing a 7/8 in keyed shaft and 2.25 in shaft length. It runs at 3450 RPM and draws 20 amps.
Its alloy-steel build weighs 47 lb. The mounting base must hold it securely.
It supports clockwise and counterclockwise rotation. Set the correct direction to match the compressor pump.
The open drip-proof design is for clean, dry environments. Keep dust and moisture away where possible.
Its size is close to the VEVOR 5 HP motor, but the brand and 20 amp draw differ. That matters for breaker and wiring checks.
Compare the old nameplate and mounting holes before choosing between them. Check frame, shaft, rotation, and electrical figures together.
This motor also serves as a table saw motor in stated use. For compressor use, pulley alignment and belt position remain key.
Keep the cooling path clear and the base stable after fitting. Choose it only when all stated measurements match.
VEVOR 7.5HP Air Compressor Electric Motor: Best for high-power 184T compressors
- 7.5 HP
- 230V
- 31.6 amps
- 184T frame
- 1-1/8 in keyed shaft
- 3450 RPM
This high-output motor is for a compressor designed around a 7.5 HP motor and 184T frame. Its larger shaft and higher current rule it out for many smaller Ingersoll Rand units.
Pros
- 7.5 HP output
- 184T frame
- 3450 RPM
Cons
- Requires a 60 amp customer-supplied circuit breaker
- Larger 1-1/8 in shaft and 184T frame
The VEVOR 7.5HP Air Compressor Electric Motor is the high-power option for a compressor built around an 184T frame and 1-1/8 in keyed shaft. It runs at 230V, draws 31.6 amps and reaches 3450 RPM.
Its shaft length is 2.75 in, so it does not match the 56-frame, 7/8 in shaft pattern used by several 5 HP choices. The frame difference alone will rule it out for many compressors.
The stated circuit breaker supplied by the customer should be 60 amps. Higher power brings higher electrical demands, and the circuit needs to be ready for them.
The open drip-proof design is intended for a clean, dry environment. Dust and moisture can be harder on a motor working under a heavier load.
The motor is reversible for rotation, with counterclockwise as the factory setting. Correct rotation is still required for the compressor pump.
Choose it only when the original motor and mounting system call for 7.5 HP and the 184T frame. Higher horsepower is not an upgrade if the compressor, circuit or pulley system is not designed for it.
The larger keyed shaft also needs a matching pulley. A pulley made for a smaller shaft will not fit, and a loose fit is not safe.
Check every measurement against the old motor before ordering. Frame, shaft, voltage, amps and rotation all need to line up.
Century 3D 5 HP 3450 RPM R56Y Frame: Best for a traditional 5 HP 56Y frame
- 5 HP
- 3450 RPM
- 208-230V
- 56Y frame
- 7/8 in keyed shaft
- 22 amps
- Capacitor-start/run
This Century motor suits a 5 HP compressor requiring a 56Y frame, 208-230V power and a 7/8 in keyed shaft. It has a rigid base, ball bearings and manual thermal protection.
Pros
- 208-230V compatibility
- 56Y frame
- 1.15 service factor
Cons
- CCWSE rotation
- Open drip-proof enclosure
The Century 3D 5 HP 3450 RPM R56Y Frame suits a 5 HP compressor needing 208-230V power and a 56Y frame. It uses a 7/8 in keyed shaft with a 2.25 in shaft length and draws 22 amps.
The 208-230V range can suit a wider set of shop circuits than a single 230V figure. The compressor and wiring still need to match the selected voltage.
This motor has a rigid base, ball bearings, capacitor-start/run design and manual thermal protection. The rigid base helps keep the motor steady on the compressor frame.
Ball bearings support smooth shaft operation under load. The capacitor design is part of how the motor starts and runs, so it should be left as supplied.
Manual thermal protection can shut the motor down if it overheats, and it then needs to be reset. That is a safety feature, not a fault to ignore.
Its stated shaft rotation is CCWSE, so check the original compressor required direction. A motor with the wrong rotation will not drive the pump correctly.
The motor is open drip-proof and has a 1.15 service factor, which describes load capacity under stated conditions. It should not be read as a reason to overload the compressor.
Its overall length is 14-5/8 in, useful when checking space around the frame and belt guard. Keep the motor in a clean, dry position and keep cooling openings clear.
JIAXINPRO 2HP Air Compressor Motor: Best for dual-voltage home workshops
- 2 HP
- 115/230V
- 56 frame
- 5/8 in keyed shaft
- 1.88 in shaft length
- 3450 RPM
- 75 dB
This 2 HP motor is aimed at compressors matching a 56 frame, 5/8 in keyed shaft and 3450 RPM. Its 115V and 230V options suit a home garage or shop circuit that supports the selected wiring.
Pros
- 115V and 230V options
- 75 dB operation
- CW/CCW rotation
Cons
- 2 HP capacity
- Open drip-proof construction needs protection from dust and moisture
The JIAXINPRO 2HP Air Compressor Motor is a practical choice for a 2 HP compressor using a 56 frame, 5/8 in keyed shaft and 1.88 in shaft length. It runs at 3450 RPM and supports 115V or 230V wiring.
Dual voltage can help a motor suit a home garage or a shop circuit. The wiring needs to be set for the chosen voltage before the motor is used.
The motor operates at a stated 75 dB and uses an open drip-proof enclosure. That makes it one of the quieter stated options in this group.
Its rolled-steel construction weighs 31 lb, and its rotation can be changed between CW and CCW. Correct rotation still needs to match the compressor pump.
An external manual-reset overload protector is part of the stated design. If it trips, the cause should be checked before resetting the motor.
Pre-drilled mounting holes and a standard shaft length make fitting more straightforward. Pulley alignment and belt tension still need careful checking after mounting.
Use the motor wiring diagram when switching voltage or rotation. Do not copy wiring from the old unit.
The 2 HP rating means it belongs with a matching compressor system, not with a 5 HP or 7.5 HP unit. Keep it clear of dust and moisture, and check the nameplate first, then the pulley and circuit.
How do you choose an Ingersoll Rand compressor motor?
Choose by the original motor complete nameplate and mounting pattern, not by horsepower alone. Record these details before comparing replacements.
- Horsepower and RPM
- Voltage, phase and full-load amps
- Frame number
- Shaft diameter and shaft length
- Keyway size
- Rotation direction
- Mounting holes and base style
- Pulley alignment and belt position
Horsepower gives the power class, while RPM gives the expected speed. A different speed can change pump performance and may not suit the system.
Voltage, phase, and full-load amps show what the supply must provide. Those figures also link to the correct breaker and wiring.
The frame controls the mounting pattern. Two motors with the same horsepower can have different frames, and the wrong frame may not bolt to the compressor.
Shaft diameter and length control pulley fit and belt line. The keyway must match too, since the key joins pulley and shaft.
Rotation must suit the pump. Some motors reverse by wiring and others are fixed, so confirm the direction before fitting.
Mounting holes and base style affect how the motor sits. Check pulley alignment and belt position after mounting, since poor alignment can cause wear.
Frame and shaft matter most. A 56 frame with a 5/8 in shaft is not the same fit as a 56 frame with a 7/8 in shaft.
Start with the old motor in place if you can. Photograph the nameplate, note the wiring, and measure shaft and mounting points.
For a 240V setup, compare this roundup with our guide to the best 240V air compressor motor. If your unit is rated around 5 HP, our best air compressor 5 hp motor guide covers the same key matching checks.
Those guides do not replace the nameplate. The original data should make the final decision.
What voltage and amp rating should you match?
Match voltage and amp draw to the compressor circuit and original requirements. Some motors support dual voltage, while others are listed for 230V only.
Voltage is the supply to use, and amp draw is the current under load. Both must suit the circuit and compressor design.
The VEVOR 2HP motor uses 20 amps at 115V or 10 amps at 230V. The lower figure at higher voltage is normal, but wiring and breaker must match the setting.
The JIAXINPRO 2HP motor also supports 115V and 230V. Set it according to its wiring diagram.
The VEVOR 5HP, POWORFOL 5 HP, Century 5 HP, and 7.5 HP options center on 230V setups. The Century motor is stated for 208-230V, so its range is wider.
Circuit protection must match the motor and wiring. Breaker guidance differs across products, so use the instructions and have a qualified electrician verify the circuit.
Do not copy breaker size from another motor. A different amp draw may need different protection in the same compressor.
Dual voltage does not mean any circuit will do. Outlet, wiring, breaker, and motor setting must all agree.
Higher horsepower generally draws more current. A 7.5 HP motor is not a simple swap for a 2 HP or 5 HP motor.
Check nameplate amps against the circuit before wiring. If they do not line up, it is not a safe match.
How should you install and care for the replacement?
Install the motor on a stable, correctly aligned base, then check pulley, belt, and rotation before regular use. Disconnect power before working near the motor, and keep open drip-proof motors in clean, dry environments.
A stable base matters because vibration can affect belt alignment. The motor should sit firmly, with the pulley in line with the pump pulley.
A shaft that is too short can prevent correct alignment. A shaft that is too large can stop the pulley fitting, while wrong rotation can affect operation.
Measure shaft and pulley before fitting the belt. The key and keyway must match so the pulley sits securely.
Keep cooling openings clear and let heat leave the housing. Blocked airflow can make the motor run hotter than it should.
Do not change wiring based on color alone. Use the diagram for the exact motor, since layouts can differ between brands.
Check belt tension after mounting and again after short use. Keep the area dry around open drip-proof motors.
If the compressor needs a new pressure reading component, compare our guide to the Best Replacement Gauge For Air Compressor. For oil-lubricated Ingersoll Rand systems, check What Oil For Ingersoll Rand Air Compressor? before selecting lubricant.
Treat those as separate decisions. Run the compressor briefly, watch rotation and belt movement, and stop to correct any problem before regular work.
Regular care is mostly keeping the motor clean, dry, and well ventilated. That routine supports longer service life.
Which Ingersoll Rand motor replacement should you buy?
Choose the VEVOR 5HP Air Compressor Electric Motor if your compressor matches its 230V, 25 amp, 56HZ-frame, and 7/8 in keyed-shaft requirements. That is the clearest match for that common 5 HP pattern.
Choose the VEVOR 2HP or JIAXINPRO 2HP when the original is a dual-voltage 56-frame unit with a 5/8 in shaft. Both suit 2 HP systems, but amp and breaker details differ.
Pick the VEVOR 5HP SPL when your 5 HP compressor needs the smaller 5/8 in shaft. The 1.88 in shaft length must also match pulley position.
Choose the Century motor for a 56Y, 208-230V setup. Its rigid base, ball bearings, and manual thermal protection suit that design.
Reserve the VEVOR 7.5HP motor for a confirmed 184T, 1-1/8 in shaft system. It is a specialist motor, not a general upgrade for smaller compressors.
The POWORFOL 5 HP motor suits a 56-frame, 7/8 in shaft, 2.25 in length pattern. Its 20 amp draw separates it from the VEVOR 5 HP motor.
The VEVOR 3.7HP motor fits a 230V, 56-frame, 5/8 in shaft compressor. Choose it only when the nameplate calls for 3.7 HP.
The VEVOR 2HP oil-free pump and motor suits a system built around its stated pump, pressure, and air delivery figures. It is a different kind of choice.
Match horsepower, voltage, frame, shaft, rotation, and circuit protection together. The right horsepower with the wrong shaft or frame is not the right replacement.
Start with the old nameplate, then measure shaft and mounting points. When one measurement is out, keep looking.
Our top 3 picks at a glance
-
1
Best for 5 HP 230V replacements
VEVOR 5HP Air Compressor Electric Motor
9.7/10 our score
See it on Amazon -
2
-
3
Best for dual-voltage 2 HP setups
VEVOR 2HP Air Compressor Electric Motor
9.5/10 our score
See it on Amazon
Frequently asked questions
What is the best Ingersoll Rand air compressor motor replacement?
The best replacement is the motor that matches your compressor's horsepower, voltage, frame, shaft diameter, shaft length, rotation and circuit needs. The VEVOR 5HP motor is the top pick here for a matching 230V, 56HZ-frame, 7/8 in shaft setup, but it is not a universal fit.
Can any 5 HP motor replace an Ingersoll Rand motor?
No. Two 5 HP motors can use different frames, shaft sizes, shaft lengths, amp draws and voltage requirements.
Compare the old motor's nameplate and mounting measurements with the replacement before wiring it.
A 5 HP motor with a 5/8 in shaft cannot replace a required 7/8 in shaft without a compatible mechanical solution.
What motor size does an Ingersoll Rand air compressor need?
Use the horsepower shown on the compressor or original motor nameplate. The motor must also match the compressor's voltage, phase, frame, shaft and rotation requirements.
Moving from 2 HP to 5 HP or 7.5 HP changes the electrical load and may require different wiring, protection and mounting.
How do I match a replacement compressor motor?
Record the original motor's horsepower, voltage, amps, phase, RPM, frame, shaft diameter, shaft length, keyway and rotation. Then compare those measurements with the replacement.
Check pulley alignment and belt tension after mounting, and have electrical work completed by a qualified person.
How long does an air compressor motor last?
Motor life depends on load, wiring, ventilation, dust, moisture, starts and maintenance. A clean, dry installation with correct electrical protection can reduce avoidable stress, but no fixed lifespan applies to every compressor.
See our guide to the average lifespan of an air compressor motor for the main wear factors.
