Troubleshooting Case Studies: Preventive Maintenance via Field Data

In the maintenance of rotating machinery within a factory, there are many challenges that cannot be solved by textbook theories alone. In this category, we share specific processes and insights on how the wireless vibration meter "conanair" detected anomalies and prevented sudden failures in actual work sites, including a major automobile manufacturer's plant in Mie Prefecture.

A Maintenance Philosophy that Values the "Usual State" of the Field

Introducing high-performance analyzers is meaningless if they cannot be fully utilized. What is truly needed in the maintenance field is a system that allows maintenance personnel to easily perform "trend management" themselves. NSXe recommends understanding the "quirks" of individual equipment through the accumulation of raw data utilizing our patented "under-sampling" technology.

• An approach to threshold setting tailored to the field, without relying solely on ISO standards (absolute values).
• Early detection mechanisms to avoid the risks of bearing damage and shaft breakage.
• Establishing a reliable maintenance cycle of "data-driven action and effect verification."

Introduction to Key Troubleshooting and Improvement Cases

In the individual pages below, we provide more detailed explanations using actual measurement data and numerical values during disassembly inspections.

1. The Importance of Threshold Setting and Trend Management

We explain the correct answer to "threshold setting," a common dilemma when introducing vibration monitoring. We demonstrate with empirical data the importance of capturing fluctuations in specific directions, such as the radial direction of the rotating shaft (Z-axis direction), rather than adhering strictly to absolute value judgments based on ISO standards.

2. Centrifugal Pump Disassembly Inspection and Repair Examples

We introduce the on-site inspections and actions taken for a pump that detected vibrations three times higher than normal. We detail specific repair contents such as impeller cleaning, precision centering adjustment from 0.5mm to 0.02mm, and consumable part replacement, along with the subsequent vibration improvement effects using FFT analysis results.

Smart Predictive Maintenance Realized "By Your Own Hands"

The introduction of the wireless vibration measurement system "conanair" is the first step toward realizing comprehensive, high-frequency monitoring "by your own hands."
The ability to install it at a low cost without wiring work enables a shift to predictive maintenance based on quantitative data, simultaneously realizing a sense of security in the field and addressing labor shortages. Passing down hands-on field experience to the next generation with reliable data is the maintenance approach proposed by NSXe.