It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or reference to the manufacturers of the machinery. The horizontal move is the part of the alignment process that aligns the shaft s centerlines from side to side. Shaft alignment training ppt presentation slides sample. Selection and use of a commercial package designed to accommodate a variety of shaft diameters is recommended. Compressor engineering corporation in the optical alignment field, until the formation in i985 of bently nevada alignment service corporation. The fixtures should include an assortment of rods to span various coupling lengths. Feb 04, 20 shaft alignment of rotating equipment is an essential part of machinery maintenance.
Alignment of pumps one of the most important parts of pump setup is making sure that the pump and the drive motor are carefully aligned. Shaft alignment of rotating equipment is an essential part of machinery maintenance. Abstract shaft alignment is a key factor in reducing vibrations and. Basic shaft alignment workbook for industrial rotatin n1achincrv. The basic engineering tradesmen and operators need to keep plant reliability up and operating costs down. Proper alignment is the largest factor in determining the life of bearings, seals and couplings. 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. Up to 4 different measurement methods makes it possible to perform shaft alignment in any conditions. Update your shaft alignment knowledge peerless pump. Dial gauge alignment procedure in covered with detailed animation. Dec 17, 2011 proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. Shaft alignment is our business for more than 20 years.
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. Shaftalign is the entrylevel device for starting smoothly with shaft alignment, providing even untrained millwrights with highaccuracy measurements. The way to complete the online pump alignment form on the internet. Laser shaft alignment pump laser alignment easy laser. 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. Shaft centerline alignment is the positioning of the rotational centers of two or more shafts such that they are colinear when the machines operate. From au the world best practice plant and equipment maintenance site. Proper alignment of rotating equipment has a long been recognized as a prerequisite to safe, reliable operation.
Achieving proper alignment, however, involves much more than merely adjustment the machines so that the shafts are coaxial. In the article temperature growth influence on the shaft alignment of centrifugal pump unit is examined. Centrifugal pumps shaft alignment in an order to provide reliable and long work a pumping unit figure 1, it is necessary to provide the precision. It also has important functions that aid the user in obtaining faster and better results. If the movable shaft is above the horizontal stationary shaft reference line the shaft is too high. For appropriate applications, the time, expertise and instruments needed to achieve precision alignment tolerances of less than 0. The alignment training is suitable for technicians undertaking machine alignment, coupling alignment, motor alignmnet, pump alignment, etc. Machine type pump motor vertical angle horizontal angle horizontal offset thermal compensation stationary s machine movable m machine vertical offset offset 2. Start with 3 mm 18 of shims under each foot with the hold down bolts centered. A motor with a starting temperature of 70 f is perfectly aligned to the pump shaft it will be driving. Machinery alignment tolerance tables the suggested alignment tolerances shown here are general values based upon experience and general industry standards and should not be exceeded. Reverse alignmentunderstanding centerline measurement by c.
The shaft was found to be grossly misaligned and drawing 174 amps. Now the shaft alignment measurement procedure can begin. A variety of shaft alignment fixtures are available for performing rimface alignment. If a manufacturer of a machine or coupling require tighter alignment tolerances, those should be used. Pump alignment form fill out and sign printable pdf. Use this stepbystep guide to fill out the pump alignment form swiftly and with ideal precision. Here you can download the pdf template of the tksa 20 shaft alignment report, which can be used for documenting of your alignment activities. For example, the only correct way to express shaft alignment tolerances is in terms of alignment conditions at the coupling, and we will describe several ways to do this. Motorpump alignment is the process of aligning shaft centerlines between a motor and a pump. Several equipment alignment methods, especially the reverse dial indicator method, which is the principle used in laser alignment is covered in explicit detail.
The goal of the alignment process is to create a straight line through the coupling. 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. Shaft alignment is the process whereby two or more machines typically a motor and pump are positioned such that at the point of power transfer. Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication.
Pdf shaft alignment on pumps joseph henry academia. The roughin alignment involves bringing the pump and drive shaft coupling halves square and inline. A practical guide to shaft alignment plant services. Rotalign touch is the first laser shaft alignment tool fully designed to meet the requirements of industrial iot with rfid, wifi, and cloud data transfer. Update your shaftalignment knowledge peerless pump. The horizontal move is the part of the alignment process that aligns the shafts centerlines from side to side. Proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. Shaft alignment training course ppt presentation and.
Using a straight edge across the coupling, jack and shim the feet and retighten bolts till the coupling halves are within 0. The bent shaft affects alignment process by showing improper reading. Pdf a laser shaft alignment by ipspsds for rotary machine. The shaft alignment training course provides a highly practical knowledge of the use of dial gauge in coupling alignment. Shaftalign shaft alignment system for beginners pruftechnik. View the machine from the pump end, zero the indicators on the left, and then rotate and read on the right. With feeler gauge find obvious gaps and fill them with shims, taking care of any rough soft foot condition.
Shaft alignment status pro maschinenmesstechnik gmbh bochum. Eugene vogel has worked in the machinery repair industry for more than 30 years, specializing in vibration analysis of rotating equipment. Misalignment in pumps possible causes and solutions. It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or. The most secure digital platform to get legally binding, electronically signed documents in just a few seconds. Oct 08, 2017 shaft alignment is the process of aligning two or more shafts with each other to within a tolerated margin. Benchmark was asked to align a long jack shaft on a cooling tower at a steel mill. Shaft misalignment is responsible for as much as 50 percent of all costs related to rotating machinery breakdowns.
The shaft centerline of a moveable machinetypically a motoris aligned to the shaft centerline of a machine that generally is not moved, such as a pump. Dec 01, 2002 shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. The alignment of misaligned shaft are done by using different types of shaft alignment methods which are mention below. The book is reference material on rotating machinery basics, pump overhaul, mechanical seals, basic vibration, and shaft alignment. This next application was undertaken by benchmark maintenance. Shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. Rotalign touch advanced laser shaft alignment system. If, on the other hand, you update your knowledge of shaft alignment techniques and acceptable alignment tolerances, you might be on the way to becoming more reliabilityfocused. Since the pump shaft can not be turned when uncoupled and resting on the bottom, the laser readings were taken using the static measurement mode, which is a process that permits a reading to be taken in any cardinal or subcardinal position. Fill out, securely sign, print or email your pump alignment form instantly with signnow. Make sure that you always view the pump from the same direction in order for you to keep the left and right directions correct.
The primary reasons why machinery is misaligned is lack of proper training, improper tools to do the job, and that people are not given enough time to do it right. The intuitive and affordable laser shaft alignment system skf shaft alignment tool tksa 31 the tksa 31 is skf s most affordable solution for easy laser shaft alignment. Where misalignment exists in coupled shafts, the shafts are forced to rotate in an eccentric manner which increases power consumption and creates vibrations and stresses on the shafts, couplings and machines. With a loadonpad design, figure 1 the shaft is free to laterally within bearing clearance, and alignment data is difficult to obtain without temporary bearing shims to stabilize the sham with a loadbetweenpad design, figure 1 b, the shaft remains stable during the alignment procedure. This shaft alignment video presents the most basic concepts of alignment.
Pdf basic shaft alignment workbook for industrial rotatin. Thanks to flexible brackets you can mount the equipment in the most appropriate place. In severe instances, coupling misalignment can lead to fractures in the pump casing, increased noise, and failure of the pump shaft. This is probably the most common configuration of coupled machines in industry. When interpreting the graph to determine the movable shaft s front and rear feet positions in the ertical plane, observe the following rules. 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. The data validity rule 1 shown in following equation. We plan your individual system and offer training programms for installation, trouble shooting and maintenance. A modern shaft alignment system can measure all the above types of machine. 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. Aim to have all soft foot readings within 2 mils thou. If the movable shaft is below the horizontal stationary shaft reference line, the shaft is too low. Start a free trial now to save yourself time and money. The ergonomic display unit with touch screen makes the instrument very easy to use and the builtin machine library helps storing alignment reports for multiple machines.
Machinery alignment tolerance tables impact engineering. All functions are available in a single app with programs for pump laser alignment of both horizontal and vertical machines. Shaft alignment training course ppt presentation and machine. Tmea2skf laser shaft alignment alignment performed by. Create a pdf report directly when measurement is complete it is possible to generate a pdf report containing. A laser shaft alignment by ipspsds for rotary machine article pdf available in international journal of engineering and technology 44. The advanced tools of the editor will direct you through the editable pdf. He is a member of asme, the vibration institute, and the pacific energy association. Misalignment may account for over 50% of malfunctions in rotating machinery, leading to problems such as worn or broken couplers, vibration, and excessive wear of bearings, seals and wear rings. Engines, gearboxes and propeller shafts on ships are aligned using easylaser system. Products and services adaptive alignment uses singlelaser technology and active situational intelligence to adapt to the asset, the situation, and the maintenance team.
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