Shaft alignment system 3d cad model library grabcad. The procedure for doing reverse dial indicator alignment is not a difficult one. Because of this, a good pdf editor that can move and align objects in pdf files easily is an important tool to have at your disposal. Produce pdf reports directly from the display unit and. 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. The distance from the front feet to the center of the coupling is 8 inches.
Use this simple and effective procedure for shaft alignment of your rotating equipment. It is the axial spacing between shafts to allow for expansion during operation. In that case the alignment is to be verified by the surveyor. Shaft alignment handbook third edition by john piotrowski pdf, lots of the substance amenities taken for granted in the modern society are made possible by the many rotating machinery systems found in each area of the planet. We presented the complete version of this ebook in doc, pdf, epub, djvu, txt formats. Acoem ab is the company behind the brand fixturlaser a global player and leader in developing innovative, userfriendly equipment for shaft alignment and geometric measurements. The re assembling of the joint is no more difficult then disassembling. Moreover, as the name suggests, 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. Pdf reports can be generated and directly saved from the system onto a usb stick.
Troubleshooting alignment data pdf posted on june 15, 2012. The importance of motor shaft alignment department of energy. Tmea2skf laser shaft alignment alignment performed by. This laser reference beam passes through the strut tube or cutlass bearing, the stern tube, support bearings, if any, and to the engine or reduction gearbox. It is aliniometer during concentricity measurements on the shaft bracket on the conro vessel. Changes in the temperature of machines from off line to running can have a significant impact on the shaft alignment. After removing the cardan shaft the special offset fixture mounts across the coupling flange of the driven machine. If, on the other hand, you update your knowledge of shaftalignment techniques and acceptable alignment tolerances, you might be on the way to becoming more reliabilityfocused. These changes in the shaft alignment can be accommodated in a few different ways. Our alignment software is used for preparing, analyzing, archiving measurement files and printing professional reports.
Shaft alignment of rotating equipment is an essential part of machinery maintenance. A static condition observed at the bearings supporting the propulsion shafts. Cte, new videos added to cte skills library the importance of shaft alignment. This video is intended to guide a user through the shaft alignment process for a typical mid engine, direct drive tournament ski boat. Shaft alignment industrial wiki odesie by tech transfer. Laser alignment is an essential component of a viable maintenance.
At a yard i once managed, i clearly recall watching a contractor, who specialized in this work, take a decidedly seatofthepants approach to calculating shaft weight and the associated sag or droop. The participant is able to learnbydoing in the course. This centers the shaft in the shaft log and gets rid of the wiggle, assuming your cutless bearing was recently replaced. Troubleshooting alignment data pdf shaft alignment. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. It is an absolute requirement for machinery before the machinery is put in service.
Veedrive ski boats require additional steps and instruction. Avace mafactri office the importance of motor shaft alignment the objective of optimized shaft alignment is to increase the operating life span of rotating machinery. Achieving proper alignment, however, involves much more than merely adjustment the machines so that the shafts are coaxial. Welcome to the world of intelligent shaft alignment using rotalign ultra is shaft. To achieve this goal, components that are the most likely to fail must be made to. Shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. Engineer guide to shaft alignment if you are searched for the ebook engineer guide to shaft alignment in pdf form, in that case you come on to correct site. You must first take the wobble out of it, then align the coupling flange on. Any type of alignments are wanted two fixed center. Shaft alignment tool utilising tablets and smart phones skf.
Sighting through as part of shaft alignment procedure eliza jaryszkami ska west pomeranian university of technology, szczecin, institute of manufacturing engineering, al. These reports can be exported as pdf files and shared with other mobile apps. Live view supports intuitive measurements and facilitates horizontal and vertical alignments. Shaft alignment handbook third edition by john piotrowski pdf. Shaft align1 requirements apply as the basic criteria. The alignment training is suitable for technicians undertaking machine alignment, coupling.
The alignment of shaft with the bearing and housing, which is a manufacturing tolerance stackup of the bearing parts and the housing bores and faces. Measure and correct alignment of the machine to achieve the final alignment to the required targets within tolerances. The speed of use and the precision in alignment means that investing in a laser based shaft alignment system usually pays for itself within 36 months. Man diesel, recommended main engine alignment before chocking afloat condition, coupled to shafting system and main engine in sagged condition. Visually check coupling, pipehangers, base bolts, coupling spacing etc. Propeller shaft alignment forward alignment approach.
Understanding the need for offset shaft alignment vibralign. In some very large ships, however, the main shaft thrust bearing is located farther aft in a machinery space or a shaft alley. Shaft alignment thermal growth compensation oftentimes, machines expand considerably when moving from a cold to hot operating temperature. A machine properly aligned will be a reliable asset to the plant, it will be there when it is needed and will require less scheduled and unscheduled maintenance. Thats why the shaft alignment software was designed to help walk you through the stepbystep process of aligning your rotating machinery. Good shaft alignment practice should be a key strategy in the. Shaft alignment is the act of measuring the relative position of two machines that are coupled and repositioning them so that the rotational axes of the two shafts form a straight line collinear when the machines are at normal. Easylaser e530 is a precise and competent alignment system for your. Alignment of the shaft is necessary when the motor or driven machinery is new or when it is dismantled due to improper running. The original function of a flexible coupling was to accommodate the small amounts of shaft misalignment remaining after the completion of a shaft alignment using a straight edge or feeler gauges.
This alignment technique uses a laser mounted in the region of the propeller and projects a laser reference beam forward. This shaft alignment video presents the most basic concepts of alignment. Incorrect alignment occurs when the centerlines of the motor and the driven equipment shafts are not in line with each other. Checking the alignment in way of crankshaft deflection bearing load engine sag main bearing clearance before chocking the engine. A good static alignment is required for troublefree dynamic operation of the propulsion shafting. Shaft alignment methods explained bright hub engineering.
For example, the only correct way to express shaftalignment tolerances is in terms of alignment conditions at the coupling, and we will describe several ways to do this. Jaryszkami ska, sighting through as part of shaft alignment procedure. The thermal growth compensation function allows the measurement system to calculate the appropriate shims and values needed to make adjustments in such cases. Article describing how to compare rim and face dial indicator data to the alignment data produced by laser systems. Clean, dress up and file any burrs from mounting faces and anchor bolt. If the front foot of the motor is left 2 mils high and the back feet are left 2 mils low, the shaft alignment results will be as follows.
The content of this infographic is a basic guide to realign machines. Design and follow up requirements are published in part 6, chapter 2, section 10 and part 7, chapter 1, section 6 38 respectively of the dnv gl rules for classification of ships. For ease of use, the reverse dial formula has been incorporated into a shaft alignment data form, shown in figure 50. Alignment report hung seng huat engineering product co. Slip four pieces of carefully milled hardwood or square steel rod back a couple inches into the shaft log around the shaft, one each on the top and the bottom and one each on the sides. Regarding john gross question about how a shaft can be aligned with so many things being so wobbly. Example of sighting through using optical or laser instrument fig. Many consider runninggear alignment to be a black art. The difference is also that in using a laser based alignment system the machines are actually checked. This 2day course begins with the fundamental principles behind shaft to shaft alignment and concludes with students conducting a series of alignment exercises using conventional alignment tools. This is because checks are so easy and fast to carry out.
It is very important that the approved alignment specification contains tolerance on the parameters to be checked. When the shaft of two rotator machines are directly coupled via a flexible coupling, any misalignment between their centerlines of rotation can result in vibration. Shaft alignment report measurement program horizontal operator user measurement unit mils temperature 80. The primary and optional data entry windows intuitively tells you what information is required, and if you make a mistake, there are background routines to point out your errors. Shaftalign os3 is easily extendable through the activation of powerful options as the alignment requirements grow. Measure, diagnose, and correct soft foot with the assistance of the laser system and feeler gauges. The fag toplaser equilign system must only be used for the alignment and.
In addition to a shaft alignment specification, also shaft alignment calculations may be required for approval. Sometimes pdf creators or converters do a poor job of maintaining the original layout of text and objects in pdf files. In isolation each strategy can help to reduce unexpected machine failure but taken together they form the hub. There are several steps which need to be taken for a successful alignment job. Proper alignment of rotating equipment has a long been recognized as a prerequisite to safe, reliable operation. The bent shaft affects alignment process by showing improper reading. Ntt recommends a class of no more than 12 participants for the best results.
Running gear alignment professional boatbuilder magazine. Dbse stands for distance between shaft ends during alignment. Shaft alignment training course ppt presentation and. Comprehensive and compact a range of included components, such as. In most ships, the main thrust bearing is located at the forward end of the main shaft within the main reduction gear casing. Shafts are breaking or cracking at or close to the inboard bearings or coupling hubs.
Virtually everything we consume or use has been touched or produced in some manner by rotating gear. It is calculated, conducted and verified when the system is at rest. Toplaser equilign can be saved directly as pdf files. The ins and outs of shaft alignment part ii zf marine propulsion. Offset shaft alignments require specific shaft alignment equipment. The fixturlaser xa is capable of doing this type of alignment using a special bracket set and alignment program. A practical guide to shaft alignment plant services. Between two shafts and occurs at the coupling between the generator and turbine. The proper alignment of a vertical shaft hydrounit is critical to trouble free. Shaft misalignment is responsible for as much as 50 percent of. By filling in the appropriate information into the proper boxes, the required shim changes for correcting both the angular and offset misalignments can be determined. Shaft alignment is the process to align two or more shafts with each other to within a tolerated margin.
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