Alignment of couplings pdf

The caliperstraightedge alignment procedure is described below. Additionally, shaft hubs include hub flats for ease of alignment. When initial align ment is incorrect and the coupling is heavily stressed due to torque or other forces, it will have little. Improper alignment results in excessive vibration, short life of driven equipment compound bearing and coupling clutch parts, and frequent re alignment. Insert the feeler gauge between the coupling faces of the shafts. Couplings can be rigid or flexible depending on the alignment. This method can be used by inserting a feeler gauge and here are the steps listed below. Feb 04, 20 shaft alignment of rotating equipment is an essential part of machinery maintenance. Various alignment tool vendors and industry consultants had published tolerances for acceptable alignment of flexible couplings, but these varied among sources. Select a gear coupling to connect a 500 hp, 1170 rpm electric motor. The importance of motor shaft alignment department of energy. Generally there are two main types of misalignments.

Shaft alignment training course ppt presentation and. Hrc, resilient couplings from 30 to 3,150nm, available in taper lock and pilot bore variants jaw couplings from 0. Actuator accessories actuator products linear alignment 4tk series prl series linear alignment couplers are available in 12 standard thread sizes. F12 tb woods 8888296637 p1686tbw 1219 table of contents sureflex plus couplings utilize epdm, neoprene, and hytrel flexible elastomer sleeves to transmit torque and. Pdf a practical guide to shaft alignment ahmad rohman. In power transmission, a coupling alignment is a device used to connect two or more machine shafts together for the purpose of transmitting power. Festo didactic 3696520 v table of contents preface vii.

The reducer low speed shaft diameter is 215 mm, the conveyor head shaft is 225 mm. 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. There are several steps which need to be taken for a successful alignment job. The proper alignment of a vertical shaft hydrounit is critical to trouble free. Shaft alignment is one of the major problems related to machinery with shaft coupling. This article describes what is a coupling, types of couplings, rigid couplings, flexible couplings, universal couplings, hookes coupling, pin bush coupling, flanged coupling etc. Maximum reliabilty for troublefree operation, long life and lower operating costs increased cylinder life by reducing wear on piston and rod bearings. Condition monitoring, machinery diagnostics, shaft and belt alignment. Quality certificationquality certifications the pmi registered education provider logo is a registered mark of the project management institute, inc. If vibration is detected it could indicate there is an issue with alignment or other problems. Couplings are mechanical elements that couples two drive elements which enables motion to be transferred from one element to another.

Machinery manufacturers published various shaft alignment guides for their specific machines, but these varied widely in methodology and acceptable tolerances. 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. Therefore, the service life of these couplings is practically unlimited when operated within the acceptable range of allowable misalignment. This could point to problems related to the motor, coupling. Residual dipolar couplings rdcs have attracted attention in light of their great impact on the structural elucidation of organic molecules. Coupling alignment you must check the pumps flexible coupling alignment immediately and then again just before startup.

Powershim alignment shims contribute to the safe practice of reducing worker injuries and cuts during installation. Machinery alignment tolerance tables impact engineering. Couplings and shaft alignment provides positive practical guidance to engineers dealing with shaft couplings for the transmission of power, and concerned with the related problem of shaft alignment. Understand the difference between aligning couplings and aligning shafts. Vibraligns recommended shaft alignment tolerances are based on acceptable tolerances used by industry and should be used in place of coupling tolerances when no alignment tolerance is specified by a companys engineering or reliability department. Gear couplings are normally grease lubricated and must maintain their internal lubrication. A practical guide to shaft alignment plant services. Read the article to know more about shaft alignment. As an example, a machine with a short flexible coupling running at 1800. Jaw couplings lline l, al, ss, c, h installation guide 1. 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. Produce pdf reports directly from the display unit and save to usb memory. However, the effectiveness of rdc measurements is limited by the shortage of alignment media compatible with widely used organic solvents, such as dmso.

Basic shaft alignment workbook preface w elcome to the introductory book on shaft alignment of rotating machinery. For example, the only correct way to express shaft alignment tolerances is in terms of alignment conditions at the coupling. Pdf laseroptical alignment of shafts in rotating machinery is simple and more accurate than conventional mechanical methods and can. 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. A simple and effective procedure for doing shaft alignment of rotating machinery. 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. It features a dropout center assembly for easy equipment maintenance. These can be clamped straight to the cylinder rod, offering a superior strength connection. Accurate laser shaft alignment of the driver to the driven machine requires that the cardan shaft and its couplings be removed. Coupling alignment is essential to ensure the troublefree mechanical operation of a pump set and to avoid damage to the transmission elements. Magnaloyproductscatalog northamericasfavoritesourcefor. Elas tomeric couplings transfer element typically a rubber or urethane compound or a derivative. While accurately aligned at the factory, this alignment may shift or twist during shipment. Between two shafts and occurs at the coupling between the generator and turbine.

Misalignment shaft couplings misalignment shaft couplers. There is no dispute between vibration and reliability trainers, practitioners and commentators that. However, the task of shaft allignment can be made easy by following a few guidelines. Step beam couplings are electrically isolating and do not wind up.

Jul 10, 2017 the major topics that will be covered include. Load stress on formflex couplings is maintained at very low levels, except in special cases. The electric motor rating is 50 hp at the base speed and the system peak torque at the coupling is estimated to be 150,000 lbin. Proper alignment is the largest factor in determining the life of bearings, seals and couplings.

In those cases, bellows couplings with fully split clamping hubs are often used, since they can be installed aft er the shafts have been aligned. The ships engine room is full of such rotating equipment such as pumps, generators and so forth. Since then, our couplings have been widely accepted in japanese market under the bland name of formflex coupling. Alignment couplers are designed to simplify alignment issues, resist vibrational loosening, and allow excellent freedom of movement.

For permanent couplings couplings that are insitu all the time, as opposed to clutches or nonpermanent couplings, there are two main groups based on the transfer element, with typical features listed as follows. Fixed spacer length type coupling helps to provide independent running requirement. This could point to problems related to the motor, coupling, or driven operation. 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. It is therefore necessary for a marine engineer to have thorough knowledge about shaft alignment methods, techniques and concept. Fill out, securely sign, print or email your pump alignment form instantly with signnow. Spiral beam couplings offer up to 7 degrees of angular offset and torques to 1240 inchlbs.

Pdf basic shaft alignment workbook for industrial rotatin. Good alignment practices include proper shimming, correct torque on hold. The objective of optimized shaft alignment is to increase the operating life span of rotating machinery. Pdf a laser shaft alignment by ipspsds for rotary machine. The procedure for doing reverse dial indicator alignment is not a difficult one.

Misalignment of flexible couplings can lead to excessive force on either the motor or the driven load. Couplings must be of proper design and with adequate. Misalignment will severely shorten the lifespan of your coupling. Installation and maintenance instructions atraflex. Dec 01, 2002 shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. Shaft couplings are available in different sizes and material finishes. First published in 1991, this useful text has been revised and reprinted in a more readable, updated format. Angular misalignment an overview sciencedirect topics. In most cases a quick glance at the table will tell whether coupling misalignment is allowable or not. The suggested tolerances shown on the following pages are general values based upon over 20 years of shaft alignment experience at. Linear alignment couplers are available in 12 standard thread sizes.

To achieve this goal, components that are the most likely to fail must be made to operate within their acceptable design limits. The following document is intended for the explicit use of lovejoy customers to aid in the installation of lovejoy power transmission products. How to do the alignment of shafts, compressors and. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. The most secure digital platform to get legally binding, electronically signed. How to use this manual this manual provides detailed instructions on installation, maintenance and parts identification for falk lifelign gear couplings, types g20, g32, and g52. Rotating machinery is the heart of many industrial operations, but many engineers and technicians perform shaft alignment by guesswork or with limited knowledge of the tools and methods available to accurately and effectively align.

Learn more here about the cost, thrust capacity and sizes of rod end couplings by gagne inc. Alignment allowances can eliminate the need for expensive precision machining in rigidly mounted applications. Although omega couplings can withstand gross misalignment, care should be taken for best possible alignment to assure optimum performance. Coupling alignment is directly related to equipment and coupling life. It involves maintaining the prescribed distance a between the coupling halves see shaft coupling. Equipment required c universal base assembly, model 46603 c motor package, model 46609 c couplings shafts panel, model 46610 c pillow block bearings panel, model 46611 c alignment and couplings. Less down time of replacement of cushions and rapid disconnection without disturbing existing alignment.

Make sure the probe of the dial indicators touch a smooth surface on the rim of the coupling hubs. Maximum reliability for troublefree operation, long life and lower operating costs increased cylinder life by reducing wear on piston and rod bearings. Solid magnesium alloy permanent mold castings are heat treated and offer the highest strengthtoweight ratio available. All pads are finished with rounded corners and supplied entirely in stainless steel. There are two families of couplings rigid and flexible. The book is reference material on rotating machinery basics, pump overhaul, mechanical seals, basic vibration, and shaft alignment. A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Describe the types of misalignment in motor couplings. The information may be considered privileged and should. It is agreed a laser makes coupling alignment is so much easier and the most accurate method. To achieve this goal, components that are the most likely. Step 4 precision alignment with a dial indicator youtube. The alignment training is suitable for technicians undertaking machine alignment, coupling alignment, motor alignmnet, pump alignment. Flexible couplings can accommodate some misalignment but should not be used as an excuse for poor alignment or lack of maintenance.

Misalignment for gear couplings needs to be minimized by not exceeding the manufacturers recommendations for installation limits for the gap to hub separation, angular alignment, and parallel offset alignment measurements. Easy mounting and dismounting couplings can be mounted and unmounted quickly and easily due. 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. They should be used only if no other tolerances are prescribed by existing inhouse standards. The other advantage you can save the alignment results and down load a pdf report. Rigid taper lock couplings in 8 sizes up to 10,500nm section 5. This shaft alignment video presents the most basic concepts of alignment. Rotating machinery is the heart of many industrial operations, but many engineers and technicians perform shaft alignment by guesswork or with limited knowledge of the tools and methods available to accurately and effectively align their machinery. Once the vertical angular and off set correction has been made it only requires one more reading and it is easy to correct the horizontal alignment in live mode. Alignment and couplings 5 objectives in this job, you will align two shafts using the reverse indicator method. Flexible couplings an overview sciencedirect topics. The readings on the feeler gauge are checked at four points on the shaft coupling. 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.

Industrial maintenance alignment and couplings, model 46101. Select a coupling for reversing service to connect a gear drive lowspeed shaft to a runout mill table roll. The primary purpose of couplings is to join two pieces of rotating. Alignment couplers help reduce binding and simplify field alignment problems, enhancing cylinder performance and reducing seal and bearing wear. 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. Pump alignment form fill out and sign printable pdf. If a manufacturer of a machine or coupling require tighter alignment. Rotate the couplings so that the dial indicator 1 is at the 12 oclock position and the dial indicator 2 is at the 6 oclock position. Foundations, base plates, installation, and piping strain. Coupling design factors in many variables, such as horsepower, load, specific gravity, head pressure, torque, shaft sizes, safety factors etc. Servobeam can operate at up to 10,000 rpm, up to 7 degrees angular compensation and with torques up to 300 inlbs. 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.

In cases where precision shaft alignment is simply not practical, special. Alignmentinsensitive coupling for plcbased surface mount photonics article pdf available in ieee photonics technology letters 161. The 350 kw, 1 440 rmin electric motor is driving the reducer with an output speed of 38 rmin. An alignment medium for measuring residual dipolar couplings. A shaft coupling is a mechanical device used to connect rotating shafts and absorb misalignments between them. Pdf alignmentinsensitive coupling for plcbased surface. Gear coupling selection procedure table 1 torque and horsepower ratings standard selection method the standard selection method can be used for most motor. Our zero backlash beam shaft couplings are offered in four options.

Select a coupling to connect the low speed shaft of an ore conveyor drive to a speed reducer. Vibraligns recommended shaft alignment tolerances are based on acceptable tolerances used by industry and should be used in place of coupling tolerances when no alignment. Install the appropriate coupling guard per osha supply. This procedure, the four easy steps to good shaft alignmentis simple. After the feeler gauge is put, both couplings are rotated half way simultaneously. Basic shaft alignment workbook for industrial rotatin n1achincrv.