The selection and maintenance of Morteng brushes directly determine the motor's commutation stability and service life. The core focus should revolve around four key dimensions—“material compatibility, precise pressure, good contact, and dynamic monitoring”—to establish a standardized operating system.
Choosing the right brush is the first step to ensure smooth motor operation. Start by matching the brush material to your actual working conditions: For high current density scenarios (e.g., heavy-duty motors), metal-graphite brushes with varying copper content deliver excellent conductivity and wear resistance. In environments with high circumferential speeds, carbon-graphite options offer superior self-lubrication, reducing friction damage. For precision applications (like medical or aerospace motors), silver-graphite brushes are ideal—their ultra-high conductivity minimizes contact voltage drop and heat generation.
Precise brush pressure control is equally critical. Replace standard springs with constant-pressure springs or upgrade to optimized brush holder designs; these ensure uniform, stable pressure within the manufacturer’s recommended range (typically 15-30 kPa). Don’t forget regular spring inspections: Use a force gauge every 3 months to check elasticity—if it drops by over 10% or deformation occurs, replace the spring immediately to avoid uneven current distribution.
Good brush-ring contact guarantees reliable performance. New brushes require break-in: Run the motor at low load for 1-2 hours or use a specialized tool to polish the contact surface, ensuring over 75% contact area. Weekly checks are a must: Inspect brush length (replace when worn to 1/3 of the original), check for cracks or jamming (caused by holder deformation or carbon buildup), and clean the ring surface with anhydrous ethanol if oil stains or scratches are found.
Finally, set up proactive monitoring: Install wear-limit alarms in the motor control system to alert you when brushes near replacement. Establish a science-based replacement cycle—every 6 months for high-load motors, 12 months for standard operations. These steps extend motor life and cut maintenance costs!
Post time: Dec-01-2025
