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