Shaft alignment methods

What are the different methods of pulley alignment? What is shaft alignment and why is it important? However, the task of shaft allignment can be made easy by following a few guidelines.

In this method two dial indicator ( rim and face dial ) are used to determine the relative position of movable shaft with respect to stationary shaft. Alignment of the shaft is possible only if the two ends of the shaft are not bent or crooked but faces each other in perfect symmetry. Now these two ends when to be aligned can be done in two main methods.

Laser alignment method Laser alignment methods are a marked improvement on traditional ones. A laser-driven shaft alignment device allows one to adjust alignment with far more speed and accuracy than with traditional methods. There are many devices available on the market, with different degrees of sophistication and price ranges.

Anyone who knows how to use analogue dial indicators will recognize this method. Two methods will be covered: straight edge alignment , and rim and face alignment. The course is taught hands-on with standard alignment tools. Another measurement is taken on the face of the coupling to determine shaft angularity.

When using a reverse dial method , two measurements are taken on the rims of the couplings to determine shaft offset at two points.

If the movable shaft is below the horizontal stationary shaft reference line, the shaft is too low. When interpreting the graph to determine the movable shaft s front and rear feet positions in the horizontal plane, view the graph the way you view the machine, that is, standing behind the movable machine facing the stationary machine. EasyTurn is a unique further development of the shaft alignment 9-12-method , with the freedom to choose at which clock position (which angle) you start collecting measurement values.

Shaft Alignment Method 2: EASYTURN. With the help of some mathematics, we can also restrict the total measurement range to degrees full rotation. An important understanding required is the confident use of Dial Gauges.

The have led to a much different method of evaluating the quality of a shaft alignment and to increasingly accurate methods of correcting misaligned conditions. The most popular method of measurement is reverse alignment. The laser method of alignment is similar to the rim and face method , but it uses light to span the shaft -to- shaft distance.

As both shafts are rotate the misalignment is determined by the movement of the laser beam on the detector surface. It is an absolute requirement for machinery before the machinery is put in service. Alignment Methods — Poor, Fair, Good and Best IV.

Pre- Alignment Considerations V. This is shown in Figure 17. Rim and Face Alignment B. Across the Flex Element Alignment I. Why Align Rotating Equipment?