everything that rotates
                        needs to be balanced

 

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Vibration Information for rotating machinery applications.

 

Vibration in the Workplace

Monday, July 09, 2012

Worker in industries such as construction, mining, manufacturing and agriculture are at particular risk of exposure to potentially unsafe vibration levels. Exposure can be caused from operation of rotating, reciprocating, and percussive machinery and tools. Read More

Acceptable Levels of Vibration

Friday, March 16, 2012

It is essential to design a device that has to meet a certain vibration level. Ideally, the desired vibration response must be clearly stated before a design can begin. Many different methods have been proposed to measure and describe acceptable levels of vibration in many different areas including building structures, power tools, cars. Vibration measurement should be established in terms of displacement, velocity, or acceleration, and how a device should be measured needs to be clarified. These measurement selections often depend on the specific application. It is generally accepted that the best indication of potential machinery damage is the amplitude of the machinery’s vibration velocity. Acceleration amplitude is the most perceptible by humans, for example acceptable level of vibration in angle grinders is 2.5m/s2 for 8 hour use. Some common ranges of vibration frequency and displacement are given in Table. Read More

Risk Assessment: Selecting the Best Technology for Vibration Monitoring

Monday, January 16, 2012

It is recommended to perform review of all the plant equipment before selecting the technology to monitor vibration and detect faults. There are issues that should be considered when selecting technology such as: Read More

Vibration Meters

Tuesday, January 10, 2012

Vibration meters are handheld instruments which are connected to and receive a signal from a vibration transducer and have a capability to process data so as to give an indication of vibration parameters. They are sometimes made specifically to meet certain standard, for example, ISO 2631 for Human Vibration or ISO 2372 for Vibration Severity of Rotating Machines. This blog article is focused on more general-purpose vibration meters. Read More

Vibration Caused by Misalignment

Saturday, January 07, 2012

Misalignment can occur when the centerline of coupled shafts are not coincident. Misaligned shafts cause overloading and vibration in a system; this condition can be diagnosed by examining spectral data and looking for specific patterns. Two types of misalignment conditions are possible: Read More