One of the biggest challenge in mills causing headache and loss of time during laser alignment procedure is still coupling backlash. Certain type of couplings are designed to have backlash after installation. This infamous backlash is more than often the main cause of false measurements and repeatability issues during laser alignment correction step, thus causing …
1. What are the 2 factors which influence the natural frequency of an object? R: Mass and Stiffness 2. What is the frequency response of an accelerometer mounted with a 2 poles magnet (skate magnet)? R: 2000 Hz
TOP 3 REASONS TO CONSIDER CONDITION ONLINE MONITORING SYSTEM When thinking about online monitoring, many things can come to mind: The most common questions asked by all vibration specialists, plant managers, and reliability personnel are : The 3 Top Reasons for installing an Online Monitoring System are: While writing these lines, I am on a plane, …
HOW TO MEASURE THE ROTATION SPEED WITH A STROBE LIGHT? Identifying the rotation speed of your rotating equipment can be challenging. Variable frequency drives, safety guards and transmission components with speed ratio (ex: belts, gearboxes, etc.) are all elements which could make this task more difficult. Discover the tips to make your task easier ! 1. …
1. When doing an alignment, what is the maximum number of shims that should be under one foot? R: Shims under one foot, should not be more than 3 or 4. 2. Before starting your alignment of movable machine, what are some of the important, pre-alignment checks? …
New FixturLaser RunOut Probe – safe and reliable measurements of Axial and Radial Runout Fixturlaser expands the range of measurement functions with the Fixturlaser Runout probe for measuring axial and radial runout checks on flanges and shafts. “Fixturlaser Runout Probe is of wireless design, and has a superior interface with quick mounting” says Peter Strömberg, Head …
THE CURE FOR ALIGNMENT FRUSTRATION BY STAN RIDDLE When laser alignment tools are not repeatable, it’s not the laser – IT’S YOU. During an alignment it’s easy to take a short cut, put in an incorrect shim, or an incorrect value in the laser. Alignment frustration isn’t new, but it is treatable. The secret – …
Data Collector Maintenance WHY? VISUAL INSPECTION: ERROR SYMPTOMS: Should you have a doubt with the data collected, do a counter verification with a different transducer or cable, if possible. Some data collector allow you to perform a ‘’Bias voltage’’ readings of your accelerometer. The ‘’Bias voltage’’ could differ from the manufacturer, generally between 7 Vdc …
REPEATABILITY ISSUES? IS ANYTHING ELSE AFFECTING YOUR ALIGNMENT RESULTS? During the “heat of the battle” to get the precision shaft alignment job finished it is easy to overlook simple items that can cause unexpected results, non-repeatability, and soft foot issues. Here are some examples; Chain Hoists: Vertical Jack (lifting) Bolts: Horizontal Jack Bolts: By Brad …
DOES THE Z AXIS AFFECT ALIGNMENT? In short, no it does not. There are aspects of the z axis that could affect the running of a machine, but rotational shaft alignment is not of them. What is the Z axis? The X and Y axes are references to horizontal and vertical planes respectively. With regard to precision …
