Posts tagged with: machinery vibration

Vibration Sensor Mounting Tips

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By on September 13, 2018

Accelerometers by nature are sensitive tools. This sensitivity is heavily influenced by how the sensor is mounted. Standard accelerometers are mounted several ways based on need and application. Typical route-based data collecting will be done with a rare earth magnet. The magnet can be either flat or a two-pole type. This provides good data with […]

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Permanent Mounted Sensors

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By on June 20, 2018

At the wrap up of a recent Hawk/SMC class the discussion was around what rotating assets to collect vibration data on going forward. The conversation quickly turned to a few keys assets that had the ability to impact large percentages of the downstream processes. The area technicians said that even though the machine was very […]

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Calculating VFD Motor Speed

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By on March 13, 2018

When using the Fixturlaser Smart Machine Checker (SMC) or any of VibrAlign’s Condition Monitoring Tools, there are typically only two variables you need to know for an accurate diagnosis of your machine.  You need the horsepower of the motor and the correct rotating speed.  This information will usually be stamped on the motor data plate.  […]

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Soft Foot! Or Are You Just Pulling My Leg?

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By on February 12, 2018

It’s no joke that many machines operate with high levels of vibration due to soft foot.  These same machines often have a decreased life span due to this condition. Soft foot is a condition that should be eliminated during the precision shaft alignment process, if you’re performing proper alignments at all.  This condition can manifest […]

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X, Y, Z Axis. What do they stand for?

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By on February 1, 2018

Everything must have perspective, a point of view, to be communicated. To communicate the three spatial dimensions, we use the X,Y, Z coordinates. These denote height, width and depth. In referring to machinery we use the same X,Y, Z denotations, but we give them different values or meanings. To make it even more interesting, there […]

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The New Age of Machinery Diagnostics

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By on January 16, 2018

With the introduction of the OneProd Hawk in April of 2015, VibrAlign shed light on the idea that the future of Machinery Diagnostics was about to get easier; That you can achieve a second level diagnosis on any machine without help from a professional vibration analyst. It just took a tool that empowers mechanics to […]

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Fix the Easy Things First!

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By on October 26, 2017

One of the hallmarks of a good maintenance technician is the ability to troubleshoot – not just using vibration tools, or volt meters, or laptops with Ethernet plug-ins, but the ability to troubleshoot machinery in their minds.  In other words, the ability to visualize what the problem might be. “Fix the easy things first” is […]

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Using Bearing Defect Factor for Gear Defect Detection

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By on October 12, 2017

Bearing defect factor is a culmination of two technologies used for shock detection.  DEF is designed as an indicator for bearing defect detection, but can also be valuable in the detection of gear defects. Why is DEF significant? In the following data set are displayed Overall Vibration Velocity, Overall Acceleration, and Defect Factor.  The Overall […]

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One Resolution to Motor Resonance

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By on September 28, 2017

A customer was experiencing high levels of vibration on one of the HVAC motors. The cause for these high vibration levels was determined to be resonance. Resonance of this motor was seen in the vibration spectral data and was confirmed onsite with a bump test. This motor was not VFD driven and therefore the machine […]

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Vibration Sensor Mounting Tips

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By on September 13, 2017

A vibration sensor (or accelerometer) measures vibration-simple, right?  But how and where you mount the sensor is CRITICAL to getting good information.  Here are some good tips to keep in mind. 1. Mount the sensor as close to the bearing location as you can safely do it. These sensors can measure vibration anywhere on the […]

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Pump Vibration – Even Cavitation Isn’t Always Cavitation!

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By on August 2, 2017

Most people who work on, or around pumps are familiar with the term “cavitation”.  It is often used as a catch all phrase for any flow-related vibration on pumps, and is often reported by vibration analysts when: Pump noise level is high, Pump vibration is erratic, with lots of “noise” in the spectrum. But there […]

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Setting Up a Motor-Gearbox for Vibration Measurement

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By on May 25, 2017

Gearboxes are common in industry.  They are used to increase or decrease speed from the driver, provide increased torque, and change direction of power transmission.   There are two main types of commonly-used gearboxes:   GEARBOX TYPE Parallel or Standard Gearbox-one where the input and output shafts are parallel. Bevel or Right Angle Gearbox-one where […]

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Calculating Output Speed Using Pulley Diameters and Input Speed

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By on May 10, 2017

Knowing the correct shaft speed of both shafts on a belt-driven machine is important when performing machinery diagnostics. Ideally you would do this by first identifying the input and output speeds using a strobe light, photo tach or laser tach. Once you know the accurate speed of both components, use this formula to determine the […]

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Maintenance Strategies, Part Three – Predictive Maintenance

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By on February 21, 2017

Predictive Maintenance, also known as Condition Based Maintenance or affectionately known as “if it ain’t broke, don’t fix it” also has its own set of pro’s and con’s. The pro’s: Rotating equipment usually gives warning signs before failure. Vibration level or pattern changes, rise in temperature, wear detected via oil analysis, performance change, motor current […]

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So You Got Your New HAWK! Let’s Set it Up.

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By on February 15, 2017

So you received your new OneProd HAWK Supervisor or HAWK Supervisor with Balancing.  There are some steps to follow to insure your instrument is configured correctly. Nest Set-up:  You will need to make sure you are using only Microsoft Internet Explorer 8 (or higher) for the first connection and you will need to download MS […]

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