Understanding the ISO 10816-3 Vibration Severity Chart

The ISO-10816 Vibration Severity Chart hovers above industrial machinery.

The Smart Machine Checker (SMC), and the Falcon (vibration data collector/analyzer) use Accurex™ automatic diagnostic software to determine vibration problems on rotating equipment. Accurex™ performs a first order diagnostic based on ISO 10816-3 specifications (based on overall vibration levels in velocity, in inches per second/peak, or mm/sec/rms), and a second order diagnostic based on several…

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Implementing a Hybrid Model to Monitor Machinery Vibration

Monitoring machinery vibration can use many tools and models, including a hybrid model. Some of the monitoring tools available today include: Portable vibration data collectors and analyzers.  Short-term surveillance vibration data collectors and analyzers (which can be installed temporarily). Embedded sensors mounted to equipment which can monitor vibration, temperatures, and other inputs. Permanently mounted accelerometers…

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Belt Drive Basics

All over the world belts provide power transmission in transportation, industrial and commercial machines. Belt drives for power transmission are classified as frictional drives. The belt transmits power by contacting the sides of the drive and driven sheaves. Belts are available in several styles: Flat belts, v-belts, Synchronous (timing) belts and Multi-ribbed belts. While belts…

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Root Causes of Machinery Failure

As maintenance and reliability professionals we have a tremendous responsibility to keep the machines in our facilities up and running. As the entire world navigates through this pandemic, water, power, food, medicine and many other essentials have continued to be provided. Having the necessary skills and knowledge is critical to ensuring that we are able…

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Mechanical Looseness Identification

A common vibration signature on equipment is looseness. There are two types of looseness: structural/fastener, fit between rotating components. For this discussion, we will focus on structural and fastener looseness.  Typically, it is highly directional, occurs at 1xRPM, and will look similar to this spectrum. In this case, the vibration was confined to the vertical…

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Vibration Sensor Mounting Tips

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

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

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?

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?

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

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!

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

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

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

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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