Get Pdf Shaft Alignment Report Sheet

The bottom line of numbers (to the right of the machine icon with four feet) represents the angularity, offset, front foot and rear foot values in the horizontal plane. Bottom line, look at the angularity and offset in both the horizontal and vertical planes to quickly determine how good the alignment is.

Acceptable precision shaft alignment tolerances for 1800 RPM are 0.7mils/1” angular and 4.0 mils offset. The coupling manufacture's alignment tolerances for the 1070T grid coupling (installation limits) are from the installation and maintenance instructions found on the manufacture's website.

Dial Indicator Method: This is a traditional method where two dial indicators are attached to the shafts. Rotating the shafts shows how much misalignment exists, and adjustments are made ingly. Laser Alignment Tools: These are the most accurate and easiest to use.

Generally, flexible couplings are able to tolerate up to ±3 degrees of angular misalignment and up to 0.75 mm parallel misalignment depending on their design.

Diagnosis via laser shaft alignment system Checking for shaft misalignment is often the first course of action when a machine starts having a problem. A laser shaft alignment system determines misalignment at the coupling and calculates the appropriate machine movement to be performed at its base.

The tolerance for permissible variation from straightness of a shaft is maximum 0.006 in/ft. To check shaft straightness, use a dial indicator inside the boat, forward of the strut, just aft of the bearing and forward of the propeller. To check the trueness on the taper, the propeller must be removed.

Combined misalignment, which is the most common of the situations, occurs when there are parallel and angular deviations in the same set of centerlines.

- Acceptable tolerances for shaft alignment depend on the type of machinery, its speed, and the manufacturer's specifications. - Typically, parallel misalignment is allowed within 0.05 mm (0.002 inches) per inch of coupling diameter, and angular misalignment within 0.1 degrees.