Product Description
Brush holder
Frequently Asked Questions
Q: What is the function of a brush holder in an electric lift truck?
A: A brush holder secures and positions the carbon brushes against the motor commutator. It provides electrical contact with the brushes and conducts current into the motor armature. A damaged or worn brush holder results in poor motor performance or complete motor failure.
Q: When should a brush holder be replaced?
A: Replace the brush holder if you observe motor power loss, arcing inside the motor, visible wear or cracks on the holder body, or if carbon brushes are no longer making proper contact with the commutator. Preventive replacement during brush service extends motor life.
Q: What materials are brush holders made from?
A: Brush holders are typically molded from phenolic resin or similar electrical-grade insulating materials combined with copper or brass electrical contacts. The insulating material protects against electrical arcing while the metal components conduct current efficiently.
Q: How long does a brush holder typically last?
A: Brush holder life correlates with brush wear and motor duty cycle. In moderate-duty applications, expect 4 to 6 years of service. Heavy-use trucks may need replacement every 2 to 4 years. Replace it whenever carbon brushes require service to ensure maximum motor performance.