Shaft alignment industrial wiki odesie by tech transfer. Traditionally alignment has been described in terms of dial indicator readings at the coupling face or position values at the machine feet. Jan 16, 2017 in this video we will describe alignment of pump and motor alignment system, alignment tool, alignment machine, alignment chart, alignment problem, alignment using dial indicator,shaft coupling. This could happen gradually and go unnoticed for awhile. The measured values from both of these methods are dependant upon the dimensions of the machines. It is followed by shaft alignment rim and face, and shaft alignment laser. 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. 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.
Ensure the rim and face dial indicator tirs are properly determined from the dials prior to performing calculations. As pictorially presented, it simply means the dial indicators were arranged, tightened, and adjusted to zeroes at the not shown opposite position, then rotated 180 and are now shown in the correct. To ensure perfect alignment dial readings must be carefully recorded. Reverse alignmentunderstanding centerline measurement by c. To obtain a complete set of asfound readings, perform the steps below. This method is usually used when laser alignment equipment is not available for use. The rim itself can vibrate excessively on the axle which could loosen the components which maintain the alignment. When these steps are performed, it is often found that the data is either not repeatable andor not valid. Alignment of the shaft is necessary when the motor or driven machinery is new or when it is dismantled due to improper running. There are several steps which need to be taken for a successful alignment job.
Since there are many different methods for mounting dial indicators reverse indicator, rim and face, double. Rim and face alignment formula method tamil rotating. Jan 29, 2014 final results showing a machine in alignment. An important understanding required is the confident use of dial gauges. When these steps are performed, it is often found that the data is either not repeatable and or not valid. Let us show you the theory behind the magic, or how the app is doing the math for you read more fixturlaser laser kit simplified laser shaft alignment making precision shaft alignment available for. In this training, we will focus on two dial rimface alignment and how to accurately determine shaft positions using calculation and graphing procedures. Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Draw a simple diagram in you alignment sheet to show how the dial indicators are fixed, and the distances of inner and outer boards ib, ob.
Shaft coupling alignmentprocedurerim and facemethod 22. We were using the fixturlaser go pro, so we took the chance to calculate the shaft alignment targets ourselves. In the right hands, a very accurate alignment can be performed with dial indicators. Rim and face alignment the classic, most often described and used rim and face format is the one described here in figure 1 of this chapter. Formula for face and rim alignment calculation free download as word doc. Formula for face and rim alignment calculation mathematics. In this stepbystep system, youll be guided along the way to quick, efficient and most importantly permanent gout cure. We recommend that you use a commercial package designed to.
Dial indicator method a rim face method b reverse rim method 3. Scribd is the worlds largest social reading and publishing site. Jul 02, 2015 in this stepbystep system, youll be guided along the way to quick, efficient and most importantly permanent gout cure. Notice the minus sign in the calculation of the vm, indicator 1. Improper alignment results in excessive vibration, short life of driven equipment compound bearing and. The final laser system results show the vertical and horizontal alignment to be in tolerance and once entered into the laserdials app. What is the formula of rim and face coupling alignment. Shaft alignment methods explained bright hub engineering. Be careful not to make mathematical errors when subtracting signed numbers. When using the rimface method, one common source of error. Shaft coupling alignmentprocedurerim and facemethod 2. Shaft alignment rim and face contact ihrdc sales for corporate purchases add to cart price. When using the rim face method, one common source of error. This course is designed to familiarize participants with the basic principles associated with measuring and correcting shaft misalignment using the rim and face method.
Alignment in order to obtain optimum service life from a cat engine and its driven equipment, correct alignment between the units is required. This interactive training unit is designed to familiarize trainees with the basic principles associated with measuring and correcting shaft. Its a simple calculationwe just needed a hot alignment point and a cold or ambient alignment point. Since there are many different methods for mounting dial indicators reverse indicator, rim and face. A practical guide to shaft alignment plant services. Shaft alignment procedures rim and face alignment method the step by step procedure of rim and face alignment method is explained below. These two points tell us how the machine moves when put in service. For maintenance personnel in drinking water and wastewater. The procedure for doing reverse dial indicator alignment is not a difficult one. Put feeler gauges, vernier callipers and straight edges to good use to achieve initial roughedin shimming and horizontal alignment.
Shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. Laser method alignment tolerances chart angular misalinment milsinch 0. Richard massey is the president of aline manufacturing company, incorpo. The vblock mounting clamps are 78 wide and supplied with chain to accommodate shafts from. Measuring and documenting asfound misalignment conditions. Converting laser alignment system readings to rim and face. This method produces acceptable results, but is less accurate than the reverse dial indicator method covered in this application note. Oct 08, 2017 shaft alignment procedures rim and face alignment method the step by step procedure of rim and face alignment method is explained below. Campbell senior alignment specialist bently nevada corporation houston, texas c. A practical guide to pulley alignment plant services. Rim and face method by calculation 38 reverse indicator method by calculation 41 indicator bracket sag measurement 43 alignment by laser 45 basic operation requirements 48 laser alignment case study laser alignment cuts energy costs 52. In this training, we will focus on two dial rim face alignment and how to accurately determine shaft positions using calculation and graphing procedures. Visually check coupling, pipehangers, base bolts, coupling spacing etc.
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. Dial indicator method a rimface method b reverse rim method 3. An engineers guide to shaft alignment, vibration analysis. Find out more about what makes your world spin more troublefree read more math giving you headache. The rim and face alignment method is one of the most common alignment techniques used in industry. This module teaches participants about the proper techniques for performing rim and face alignments. After completing this course, participants should be able to describe the basic types of misalignment, describe general preparations for a rim and face shaft alignment procedure, and explain how to use the. Complete a handson rough alignment using straight edge techniques.
Rim and face parallel misalignment calculation given the following information from figure 43, calculate the required shim moves to achieve perfect angular alignment. Ppt alignment powerpoint presentation free to download. What is the formula of rim and face coupling alignment answers. In addition to correct alignment of the pulleys, the runout errors of the pulley should also be measured and corrected. 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. However, even under the best of circumstances, it will be a timeconsuming task with many traps and pitfalls for the. Introduction the main propulsion shaft line is the essential part of a modern ship propulsion system, exposed to various conditions throughout the ships lifetime. Calculate the vertical misalignment v m for each dial indicator using the following formulas. The rotating equipment machine shaft coupling alignment training course covers several alignment methods like straight edge alignment, rim face alignment, reverse dial indicator alignment procedure and the basic principle applied to laser alignment technique. Proper alignment is the largest factor in determining the life of bearings, seals and couplings. Improper alignment results in excessive vibration, short life of driven equipment compound bearing and coupling clutch parts, and frequent realignment. Review the basic types of shaft alignment describe the arrangement of dial indicators and their mounting brackets for a rim and face shaft alignment describe equipment checks and adjustments that are generally made before alignment readings are taken using the rim and face method.
If this is not corrected the effect could be that the belts slacken. Additionally, reverse dial alignment does not require removal of the coupling to collect data. The shaft alignment reverse dial class is the first in our shaft to shaft alignment series. How accurate are dial indicators for shaft alignment.
In particular the fact that specialist equipment such as lasers are becoming available more and more cheaply, make aligning the various components of a propulsion installation into a childs game. The two types of runout rim radial and face axial should be corrected until they meet tolerance before final alignment of the pulleys takes place. Machine alignment for maintenance personnel in drinking water and wastewater facilities. Richard massey president aline manufacturing company, incorporated laporte, texas and alastair j. Piotrowski s allowable misalignment guidelines will be discussed with this. A popular method used for years and is still in use today is the rim and face method. Reverseface reverserim more familiarly called reverse dial method rimface, and laser a good reference in the discussion of alignment is a book by john piotrowski called shaft alignment handbook ref. 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. 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.