On a reversible D.C. door operator motor, what angle is the brush mounted?

In a reversible D.C. door operator motor, the brush is mounted radially in a straight up and down position. This arrangement is crucial because it enables the brushes to maintain consistent contact with the commutator, which is vital for the efficient operation of the motor. When brushes are positioned straight up and down, it allows for optimal alignment and minimizes mechanical wear, thereby enhancing reliability and longevity.

This configuration is especially important in reversible motors, as it ensures that the motor can effectively switch direction without experiencing excessive friction or resistance, which could occur if the brushes were mounted at other angles. The radial position ensures that no matter the rotation direction, the brushes have the best contact with the commutator segments, allowing for smooth operation and quick response.

Understanding the brush positioning is essential for anyone working with D.C. motors to ensure proper maintenance and functionality.