How Long Do Brushless DC Motors Last?

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Brushless DC motors can have a very long lifespan when properly maintained. Read on to learn what factors affect brushless motor longevity and how to maximize the operating life of your brushless DC motor.

What is the Typical Lifespan of a Brushless DC Motor?

Properly maintained brushless motors can operate for 10,000 hours or more. That’s over a year of continual operation.
Brushless motors last significantly longer than brushed DC motors. Removing the brushes eliminates friction, sparking, and excessive heat.

Why Do Brushless Motors Last So Much Longer Than Brushed Motors?

No brushes means no friction and wear. The commutator and brushes are common failure points in brushed motors.
Increased efficiency means less heat buildup. Without brush friction, brushless motors stay cooler.
Fewer parts means fewer things to fail. The simple design improves reliability.
Electronic control versus mechanical commutation improves precision.

What Reduces the Lifespan of a Brushless Motor?

Contamination from dust, liquids, or debris can damage the bearings and internal components.
Excessive vibration, shocks, or improper mounting stresses the motor.
Overheating due to high speeds, frequent cycling, or insufficient cooling.
Operating the motor outside its rated specifications for voltage, current, speed, or torque.
Failure to perform routine maintenance and inspection.

How to Extend the Lifespan of Your Brushless DC Motor

Keep the motor clean and dry. Protect it from contamination.
Handle and store properly to avoid physical damage.
Install and align the motor correctly to minimize vibration.
Allow adequate airflow for cooling.
Strictly follow the manufacturer’s operating recommendations.
Perform regular inspection and maintenance like lubricating bearings.
Use a premium efficient coreless brushless motor.

With proper care and maintenance, a quality brushless DC motor can provide many years of reliable service. Follow the manufacturer’s guidelines and inspect periodically to maximize the lifespan.