Five "Symptoms" of Axial Misalignment

When it comes to industrial machinery, precise alignment plays a crucial role in ensuring optimal performance and longevity. Misalignment between rotating machines can lead to various "symptoms," which, if left unresolved, can cause severe operational issues.

Whether we're discussing pumps and motors, turbines and compressors, or engines and generators, misalignment can be costly and disrupt your daily operations. Below, we explore five common consequences and symptoms of not performing precise alignment, and discuss the harmful impacts these issues can have on various industrial facilities.

Vibration This can easily become one of the most apparent imbalances in a rotating machine. When the shaft centerline is not properly aligned, uneven forces are generated during operation, causing the entire system to vibrate. This vibration not only affects the smooth operation of the machine but also accelerates the wear of its components. For instance, in centrifugal pumps, misalignment between the motor and the pump shaft can cause vibration, leading to premature failure of bearings and seals.

Increased Noise Levels - Misalignment can also lead to increased noise levels in rotating machinery. When components rub against each other due to misalignment, they produce louder and more noticeable noise than usual. This noise ranges from a low hum to a loud clinking sound, depending on the severity of misalignment and the machine's speed. For instance, in a turbine-compressor system, misalignment between the turbine and compressor shafts can result in a distinct humming or grinding sound, indicating potential misalignment issues that need to be addressed promptly.

3. Rising Temperatures - Another symptom is the excessive heat generated during operation. When components are not properly aligned, they rub against each other, creating friction and heat. The accumulation of this heat not only reduces the machine's efficiency but also leads to greater thermal expansion, exacerbating misalignment issues. This overheating can also have harmful effects on the lubricant in the machine's bearings, compromising their performance. In engine-generator sets, misalignment between the engine and generator shafts can cause overheating, potentially damaging critical components such as bearings, flywheels, and crankshafts.

4. Premature Wear - Misalignment accelerates the wear of rotating machine components, significantly shortening their lifespan. When an axis is misaligned, the stress on couplings, bearings, and other parts increases. Over time, this can lead to premature fatigue and failure, necessitating costly repairs or replacements. For instance, in conveyor systems driven by gearboxes, misalignment between the gearbox and conveyor shaft can cause accelerated wear of gears and bearings, leading to unexpected downtime, additional maintenance costs, not to mention production losses.

5. Decreased Efficiency

The most significant symptom of misalignment may be a decrease in efficiency. Misalignment can hinder the smooth operation of machinery, leading to increased energy consumption and reduced performance. Inefficient operation not only results in higher operating costs but also affects productivity and operational capabilities. For instance, in centrifugal compressor systems, misalignment between the compressor and the drive shaft can decrease the efficiency of the compressor, resulting in a reduction of compressed air or other gases output, thereby impacting production efficiency.

Accurate alignment is a necessity for achieving optimal performance.

In summary, alignment of rotating machinery with precise tolerances is crucial for maintaining optimal performance and reliability across all industrial sectors. By actively addressing misalignment issues, the maintenance department can minimize the negative impact of the symptoms discussed here.

The XT770 Laser Alignment Technology offers an accurate and user-friendly solution for achieving and maintaining alignment in rotating machinery. With the aid of laser alignment tools, industrial facilities can optimize asset performance, minimize downtime, and reduce long-term maintenance costs. Investing in precise alignment is not only best practice; in today's cost-conscious market, it should be a priority to ensure the continuous success and efficiency of industrial operations. Software Features: Axis Alignment - This application provides all the tools needed for alignment, whether it's horizontal or vertical mounted shafts or universal joints. Need to measure multiple machines coupled together? The Machine Train Planning feature is just for you.

Twist and Basic StraightnessUtilizing the flatness program, you can measure the foundation to ensure that the machinery placed on it is perfectly level. This is crucial to avoid future wear issues with bearings, shafts, and other machine components.

Trend Analysis

Utilizing trend programs for dynamic measurements, we track the movement of machines over time. This is to ensure that your equipment is unaffected by stresses such as thermal expansion and pipeline strain, which can lead to severe damage.

Numeric

If you'd like to delve deeper into these numbers, take a look at the "Value" program. It converts the measurement units into two-digit decimal places. You receive measurements in both the vertical and horizontal directions. With this program, you can almost measure and calibrate anything you can think of!