Motor, 3-Phase, Series RECIPROCRATING COMPRESSOR, Compatible Grainger Part Number 20Y778, 20Y779, Product Type Motor, Compatible with Manufacturer Part Number 45465259, Compatible with Series 2475, Compatible with Brand Ingersoll Rand
What Our Experts Think
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This is the Ingersoll Rand three-phase motor (model G5525643) designed for compressor applications—specifically for reciprocating compressors in the 2475 series.
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Engineered to meet OEM standards for high reliability and consistent duty in demanding industrial environments.
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Compatible replacement for part numbers 20Y778 / 20Y779, and fits manufacturer part number 45465259.
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Highlights include industrial frame design, compressor-duty rating, and compatibility with 3-phase systems typical in manufacturing or plant settings.
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An excellent choice when replacing a worn or failed compressor main motor to restore optimum performance.
Q&A
Q: What does “3-phase” mean and why is it important?
A: It means the motor is designed to run on a three-phase electrical supply—common in industrial environments—giving smoother power delivery, better efficiency, and longer life than single-phase motors.
Q: Is this motor specific to a certain compressor model?
A: Yes, it is specified for the 2475 series reciprocating compressors from Ingersoll Rand, and it is matched to the compressor’s duty-cycle, frame, and shaft design.
Q: What should I check before installing this replacement motor?
A: Confirm your compressor’s model number, shaft size, mounting dimensions, voltage/phase, and replacement motor frame number to ensure a fit. Also verify that this motor’s specs match your original motor.
Maintenance Tips
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Ensure correct voltage and phase wiring before power up—three-phase wiring must be correct to avoid damage.
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Keep the motor’s ventilation clean, free of dust and debris, so it cools properly under load.
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Ensure proper shaft alignment and secure coupling between the motor and compressor pump to avoid vibration and bearing wear.
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Periodically check the motor’s bearings and insulation condition—unusual noise or overheating may indicate early failure.
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Always record installation date and motor hours in your maintenance log—motor replacements should ideally be part of a planned service schedule.
