Aligning vertical pumps empowering pumps and equipment. Offset alignment or radial alignment is checked using a straight edge ruler. Dial indicators are measuring devices designed expressly to measure relative position. Try to put the stem of dial gauge perpendicular to the surface of coupling. At present man diesel recommended procedure prior to chocking is. Dial gauge alignment method pdf download linkmilcho. Do not use force against the crankshaft or driven equipment shaft while taking the indicator readings. Basic shaft alignment workbook preface w elcome to the introductory book on shaft. However, several precision tools are commonly used in alignment work. The procedure for doing reverse dial indicator alignment is not a difficult one. Hot alignment in the past, a hot alignment check may have been used to check the accuracy of the cold alignment procedure. It is a major cause of repeatability problems in shaft alignment measurements.
Offset misalignment vs dial readings if a dial indicator measuring on the rim is set to zero and then rotated 180 degrees the dial reading tir will be 2x the offset misalignment. A measure of how well the process can operate within the tolerance limits set for the target. Shaft alignment industrial wiki odesie by tech transfer. This means you can add a thermal image of the machine before and after alignment. The alignment training is suitable for technicians undertaking machine alignment, coupling alignment, motor alignmnet, pump alignment, etc. Dial indicator alignment basics dial indicators are measuring devices designed expressly to measure relative position. Step 4 precision alignment with a dial indicator duration. Laser alignment is an essential component of a viable maintenance. Shaft alignment methods explained bright hub engineering. Practical alignment tools and techniques bruce lehmann sr. Dial indicator principle, diagram, working, application. Many commercially available reverse dial indicator alignment kits. In this training, we will focus on two dial rimface alignment and how to accurately determine shaft positions using calculation and graphing procedures. Dial indicator alignment procedure reliability direct.
The simplest method is using a straight edge to bring the machines into rough. The alignment of turbinegenerator sets poses unique challenges that only the best laser shaft alignment systems can overcome. It is normally a requirement to turn equipment shafts during the final alignment procedure. Process pumps to api 610 standard have spacer couplings in accordance with api 671. With a walk through alignment benefits and methods, combined with handson exercises, your understanding and appreciation of shaft alignment will skyrocket. A rough alignment is necessary due to the range limitations of the dial indicators. In isolation each strategy can help to reduce unexpected machine failure but taken together they form the hub. It is to note that none of the alignment is perfect. Performance tasks under the supervision of the instructor, the trainee should be able to do the following. Several equipment alignment methods, especially the reverse dial indicator method, which is the principle used in laser alignment is covered in explicit detail. The indicator bracket is mounted to the motor shaft, and the dial indicator is zeroed on the inside of the cface adapter.
For equipment of small to moderate size, jackscrevvs may be adequate. An important understanding required is the confident use of dial gauges. The rotating equipment machine shaft coupling alignment training course covers several alignment methods like straight edge alignment, rim face alignment, reverse dial indicator alignment procedure and the basic principle applied to laser alignment technique. Bring a wire brush for cleaning shims and baseplates. The actual movements are measured and then applied to the cold set positions to determine the reverse indicator readings required. Reverse dial indicator alignment procedure machines. With a focus on the core alignment tasks, the tksa 11 is designed to be a very easytouse instrument that is especially suitable for alignment learners and compact applications. Dial indicator alignment basics alignment knowledge.
The primary parts of a dial indicator are the face or dial, the case, and the plunger. If the face dial contacts the coupling face directly, ensure the plunger of indicator contacts the coupling near its outer edge. A dial indicator, sometimes know as test indicator, helps test equipment integrity in a variety of workshop environments. The main purpose of shaft alignment is to make sure that the center line of the motor rotor shaft coincides with the center line of the driven machinery i. In isolation each strategy can help to reduce unexpected machine failure. Dial indicator is a very important comparator used in mechanical industrial measurement applications. To achieve good, repeatable results, pre alignment steps must be done. Press alignment procedures may be divided into two parts. The amount of alignment correction at the motor can seem to be very large.
You can also get the xt11 display unit with a builtin ir camera. Precision alignment with no manual input of data and no graphical or numeric. Reverse dial indicator alignment procedure pdf if you are looking for a quick way to see who keeps calling you late at night from an unrecognizable number, then our reverse phone lookup services can help. Ensure fixtures are mounted at a position where rotation is possible. Shaft aligning procedure preliminary checks visually check coupling, pipe hangers, base bolts, coupling spacing etc. Dial indicators precision measuring tools grainger. Alignment of the main press frame and components, which must be carried out very precisely when the press is first installed. Vibralign is committed to helping businesses use their resources more efficiently and effectively. This method produces acceptable results, but is less accurate than the reverse dial indicator method covered in this application note.
As mentioned earlier, the reverse dial indicator method of alignment is probably the most popular method of measurement, because the dial indicators are installed to measure the relative position of two shaft centerlines. A better approach is to combine the vertical and horizontal plots onto a. Reverse dial indicator alignment system alignment is the procedure by which the shaft centerline of one machine element, such as a motor, is adjusted to be colinear with the centerline extension of another machine shaft, such as a pump. Perform reverse dial indicator alignment, using the mathematical equation. You can easily create and share a pdf report containing all measurement data and images. Reverse alignment module 1550109 annotated instructors. Shaft deflection, runout, vibration, and axial motion kalsi seals. Threaded couplings which connect the motor and pump shafts are aligned using a dial indicator and bracket. Mounting a dial indicator dial indicator contact point screw thread section is standardized on m2. Shaft alignment tool set equipment used during rim and face alignment method. Additionally recommend strobe to combine ma chine rpm and belt speed to check for belt slip. There are several steps which need to be taken for a successful alignment job.
The laser alignment course is ideal if want to know what shaft alignment is all about, then this onetotwoday course is ideal. Soft footwhat it is and how to minimize it vibralign. Combining the side and top views f yjew sipe u 46 shaft alignment. Plot the offset from the rim dial indicator on line dir. Large machines will likely require something more elaborate, such as provisions for hydraulic jacking equipment provisions for turning the shafts. Incomplete thread section at the root of the screw shall be less than 0. Xt660 new generation shaft alignment system easylaser. Dial gauge alignment procedure in covered with detailed animation.
Shaft aligning techniques shaft alignment by conventional method shaft alignment by dial test indicator dti shaft alignment by using laser equipment shaft alignment by using computer. Pdf basic shaft alignment workbook for industrial rotatin. Review recent maintenance records for valuable clues and begin safe lockout procedures. Before obtaining alignment measurements, determine dial indicator bar sag of the rim dial.
Laser method alignment tolerances chart angular misalinment milsinch 0. However, precision alignments are possible using dial gauges with magnetic bases. Choose a scale for the horizontal line and plot accurately the distances 12, and 14 you measured previously. Step 4 precision alignment with a dial indicator youtube.
Reverse dial alignment sti vibration monitoring inc. Skf data sheets pdf, newsletter archive, certificationsdocuments. Reverse alignmentunderstanding centerline measurement by. The skf tksa 11 is an innovative shaft alignment tool that uses smartphones and tablets and intuitively guides the user through the shaft alignment process. Again, reverse alignment is the measurement of one axis to the relative position of an opposing axis. This measurement will be made by using dial indicators that measure in 0. This means that all the alignments are rough alignments done with the help of a straight edge ruler or a filler gauges.
However, factory tests have shown that the results of the hot alignment check are inconsistent. Reverse dial indicator alignment procedure free download as pdf. Dial indicator method a rimface method b reverse rim method 3. They are highly specialized tools that have many safety and efficiency applications, including helping measure machinery. Stan shows you how to perform an alignment in just one or two moves using dial indicators and the vertizontal compound move method. Shaft alignment training course ppt presentation and. Use feeler gauges and dial indicators to test for irregular machine status. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. It is also possible to align three 3 or more elements in more complex machines. Here you can download the pdf template of the tksa 20 shaft alignment report, which can be used for documenting of your alignment activities. Even if you have a laser alignment system, it is a good idea to have a couple of dial indicators, a good feeler gauge and a micrometer in your alignment kit.
Before taking indicator readings during the alignment procedure, always move the engine crankshaft to the end of its endplay, toward the front of the engine, and the driven equipment shaft to the end of its endplay toward the engine. Axial misalignment, end float, where the shaft centre lines are in alignment although. In fact, the improvements in machine design were critical to the development of thin kerf sawing systems. Slide the long edge of the dial indicator onto the dovetail on the silver pin of the adapter circled in figure 2. Alignment simple steps to accurate alignment its a long. When performing an alignment whether using dial indicators or laser op.
Shaft misalignment is responsible for as much as 50 percent of all costs related to rotating machinery breakdowns. Vertical shaft alignment, hydroelectric generators. Dial gauges or laser measurement devices are often used to provide more accurate measurements of the degree of misalignment between the motor and pump shafts. Lock the indicator approximately onequarter 14 inch. Laser devices provide higher levels of accuracy and also have automated features that simplify and speed up the work of measuring alignment. The graphical illustration of a single dial indicator sweep is. Alignment of vertical shaft hydro units, september 2016 bureau of. A practical guide to shaft alignment plant services. A popular method used for years and is still in use today is the rim and face method. The shaft alignment training course provides a highly practical knowledge of the use of dial gauge in coupling alignment. Alignment is critical to modem sawmills using thin kerf saws. Now that we know that soft foot is bad, we will discuss how to measure and correct it. The starrett shaft alignment clamp is designed for.
Some models combine the advantages of both by mounting. A better approach is to combine the vertical and horizontal plots onto a single plot. The plunger is a spring loaded part that can be depressed into the case causing the dial to move clockwise. Dial indicators have a smaller increments for a precision measuring range that arcs around a point. In cases of gross misalignment where the offsets will not fit on the page, a larger scale, such as 23 mils per division, is sometimes required.
Dial indicator stand with magnetic base vbrackets assembled with chains. Engineer, thin kerf technologies inc accurate sawing requires attention to proper alignment and maintenance. Compensate for sag by dialing in the amount of indicator bar sag as a positive value at 12. And you are correcting two angles, one for each coupling.
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