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. Dec 17, 2011 proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. View the machine from the pump end, zero the indicators on the left, and then rotate and read on the right. Shaft alignment is our business for more than 20 years. 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. Achieving proper alignment, however, involves much more than merely adjustment the machines so that the shafts are coaxial. The book is reference material on rotating machinery basics, pump overhaul, mechanical seals, basic vibration, and shaft alignment.
Update your shaft alignment knowledge peerless pump. Create a pdf report directly when measurement is complete it is possible to generate a pdf report containing. The horizontal move is the part of the alignment process that aligns the shafts centerlines from side to side. This is probably the most common configuration of coupled machines in industry. The alignment of misaligned shaft are done by using different types of shaft alignment methods which are mention below. 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. The shaft alignment training course provides a highly practical knowledge of the use of dial gauge in coupling alignment. Pdf basic shaft alignment workbook for industrial rotatin. The basic engineering tradesmen and operators need to keep plant reliability up and operating costs down. Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication.
Make sure that you always view the pump from the same direction in order for you to keep the left and right directions correct. Motorpump alignment is the process of aligning shaft centerlines between a motor and a pump. Use this stepbystep guide to fill out the pump alignment form swiftly and with ideal precision. It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or. When interpreting the graph to determine the movable shaft s front and rear feet positions in the ertical plane, observe the following rules.
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. Feb 04, 20 shaft alignment of rotating equipment is an essential part of machinery maintenance. Oct 08, 2017 shaft alignment is the process of aligning two or more shafts with each other to within a tolerated margin. Reverse alignmentunderstanding centerline measurement by c. In severe instances, coupling misalignment can lead to fractures in the pump casing, increased noise, and failure of the pump shaft.
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. 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. Start a free trial now to save yourself time and money. 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. Misalignment in pumps possible causes and solutions. Pdf shaft alignment on pumps joseph henry academia. It also has important functions that aid the user in obtaining faster and better results. 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 alignment of shaft with the bearing and housing, which is a manufacturing tolerance stackup of the bearing parts and the housing bores and faces. Basic shaft alignment workbook for industrial rotatin n1achincrv.
The alignment training is suitable for technicians undertaking machine alignment, coupling alignment, motor alignmnet, pump alignment, etc. Rotalign touch advanced laser shaft alignment system. Products and services adaptive alignment uses singlelaser technology and active situational intelligence to adapt to the asset, the situation, and the maintenance team. Laser shaft alignment pump laser alignment easy laser. 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. He is a member of asme, the vibration institute, and the pacific energy association. Pump alignment form fill out and sign printable pdf. If a manufacturer of a machine or coupling require tighter alignment tolerances, those should be used.
With feeler gauge find obvious gaps and fill them with shims, taking care of any rough soft foot condition. Proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. 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. 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. From au the world best practice plant and equipment maintenance site. 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. Fill out, securely sign, print or email your pump alignment form instantly with signnow.
A modern shaft alignment system can measure all the above types of machine. Benchmark was asked to align a long jack shaft on a cooling tower at a steel mill. Shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. This next application was undertaken by benchmark maintenance. Start with 3 mm 18 of shims under each foot with the hold down bolts centered. 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. Dial gauge alignment procedure in covered with detailed animation. We plan your individual system and offer training programms for installation, trouble shooting and maintenance. Shaft alignment training ppt presentation slides sample. A motor with a starting temperature of 70 f is perfectly aligned to the pump shaft it will be driving. 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 fixtures should include an assortment of rods to span various coupling lengths. The shaft was found to be grossly misaligned and drawing 174 amps. Abstract shaft alignment is a key factor in reducing vibrations and.
The horizontal move is the part of the alignment process that aligns the shaft s centerlines from side to side. Shaft alignment of rotating equipment is an essential part of machinery maintenance. 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. 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. The goal of the alignment process is to create a straight line through the coupling. Compressor engineering corporation in the optical alignment field, until the formation in i985 of bently nevada alignment service corporation. Proper alignment of rotating equipment has a long been recognized as a prerequisite to safe, reliable operation. The way to complete the online pump alignment form on the internet. If the movable shaft is above the horizontal stationary shaft reference line the shaft is too high. 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. Proper alignment is the largest factor in determining the life of bearings, seals and couplings. Using a straight edge across the coupling, jack and shim the feet and retighten bolts till the coupling halves are within 0.
Shaftalign is the entrylevel device for starting smoothly with shaft alignment, providing even untrained millwrights with highaccuracy measurements. Dec 01, 2002 shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. A laser shaft alignment by ipspsds for rotary machine article pdf available in international journal of engineering and technology 44. Engines, gearboxes and propeller shafts on ships are aligned using easylaser system.
In the article temperature growth influence on the shaft alignment of centrifugal pump unit is examined. Now the shaft alignment measurement procedure can begin. The motor is the prime mover, transferring power to the pump by the use of a coupling. Several equipment alignment methods, especially the reverse dial indicator method, which is the principle used in laser alignment is covered in explicit detail. The data validity rule 1 shown in following equation. Machinery alignment tolerance tables impact engineering. Shaftalign shaft alignment system for beginners pruftechnik.
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. The roughin alignment involves bringing the pump and drive shaft coupling halves square and inline. 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. Update your shaftalignment knowledge peerless pump. Here you can download the pdf template of the tksa 20 shaft alignment report, which can be used for documenting of your alignment activities. Shaft alignment status pro maschinenmesstechnik gmbh bochum. The most secure digital platform to get legally binding, electronically signed documents in just a few seconds.
Eugene vogel has worked in the machinery repair industry for more than 30 years, specializing in vibration analysis of rotating equipment. The advanced tools of the editor will direct you through the editable pdf. Shaft misalignment is responsible for as much as 50 percent of all costs related to rotating machinery breakdowns. If the movable shaft is below the horizontal stationary shaft reference line, the shaft is too low. The bent shaft affects alignment process by showing improper reading. 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.
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. Tmea2skf laser shaft alignment alignment performed by. All functions are available in a single app with programs for pump laser alignment of both horizontal and vertical machines. This shaft alignment video presents the most basic concepts of alignment. Thanks to flexible brackets you can mount the equipment in the most appropriate place.
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