DIAMOND CUTTER MOTOR BEARING FAULT
Diagnosed issue
In April 2026, Sonora detected new harmonic activity around 130 Hz on a diamond cutter motor, indicating possible cutter wear. As vibration levels and RMS values continued to increase, repeated recommendations were made to inspect the tool.
The cutter was replaced in May, but vibration levels continued to rise. Following the replacement, Viezo observed increasing RMS values, a shifting spectral centroid, and strengthening harmonics – indicating that the root cause had not been resolved.
Further analysis suggested that the issue originated from the motor rather than the cutter itself. As vibration levels approached 2.5 g RMS, Viezo recommended replacing the motor. Following the replacement, vibration levels immediately returned to normal operating ranges.
The defect was validated, and the root cause was confirmed as bearing wear inside the motor.
Savings
Continuous monitoring enabled maintenance teams to identify the true source of the problem after the initial corrective action failed to resolve it. Viezo helped distinguish between tool-related wear and motor bearing deterioration, enabling targeted maintenance and preventing further degradation of the equipment.