If necessary, the dial reading can be compensated for the actual. With different types of fixtures extended across the coupling, the shafts are rotated to. If there is a difference from end to end, make it equal by shims. A typical pump in an hvac application requires a fourpole motor 1,750 to 1,800 rpm, depending on slip. This 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. This is the maximum distance, and at this point the dial indicator will read the minimum value. Perform reverse dial indicator alignment, using a graphical alignment chart. This is probably the most common configuration of coupled machines in industry.
Special dial indicators series 2 optional accessories. Several equipment alignment methods, especially the reverse dial indicator method, which is the principle used in laser alignment is covered in explicit detail. There are several steps which need to be taken for a successful alignment job. Vibration wear energy usage proper alignment increases reliability. Z to the current z shown in the software and type it in as the new position.
The motor is the prime mover, transferring power to the pump by the use of a coupling. This pump alignment tool for the 6l80e takes the guess work out of aligning the pump to the bell housing. Combo beltsheave red laser la12000r and reverse dial indicator system. To measure vertical misalignment, perform the following steps. Production technicalities also necessitate the joining of long shafts. If the shaft is misaligned, you must realign the unit to prevent shaft breakage and damage to bearings, pump casing wearing rings, and throat bushings. The mathematical formula for calculating adjustments to properly align a shaft using the reverse double dial indicator alignment method follows a basic rise over run geometric principle. Additionally, reverse dial alignment does not require removal of the coupling to. Precision shaft alignment using dial indicators abstract even with the advent of new computerized dial indicator and laser alignment systems, knowledge of the basics of shaft alignment is a must. Rating is available when the video has been rented. The plunger is a spring loaded part that can be depressed into. Dial indicators are measuring devices designed expressly to measure relative position.
A better approach is to combine the vertical and horizontal plots onto a. Check the t where the gauge was screwed in for buildupblockage. 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. Used with a magnetic base or indicator stand, this gauge will show the difference in position from a zero point set at a reference position. A practical guide to shaft alignment plant services. Precision alignment with no manual input of data and no graphical or.
The proper shaft alignment procedure is to secure the driven equipment first because moving a pump, for example, would stress the connecting piping. Using your own dial indicators, dial indicator we use is a ls starrett, 81141j. Next, install the coupling to the driven equipment. It is a major cause of repeatability problems in shaft alignment measurements. Cant set injection pump timing with dial indicator page. For those currently using dial indicators without the budget to throw down on a laser alignment system, the free lovejoy dials app will help provide some of the automated calculation benefits of using laser tool. Figure 52 shows the calculation using the reverse dial alignment form. For maintenance personnel in drinking water and wastewater. Do not try to remove the pump piston from the rear. 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. Step 4 precision alignment with a dial indicator youtube.
Complete hardware kit that aligns shaft couplings using the rim and face method. Set your dial gauge with 1mm over zero by adjusting gauge body by sliding gauge into extension and watching needle rotate once or there abouts when engine is positioned off before tdc. Ritec alignment kit is a powerful tool to adjust shafts alignment using dial indicators accurately and easily. Simple and more accurate method is use of dial gages. Simply put, a differential pressure gauge measures the difference in pressure between two connections. How to properly use the dial gauge to determine zposition. Vemc presents pump motor alignment process with help of dial gauge method for accurate and smooth functioning of machines in your manufacturing units. Shaft alignment industrial wiki odesie by tech transfer.
The primary parts of a dial indicator are the face or dial, the case, and the plunger. Listed below are descriptions of some of the components most closely associated with the unit alignment. Accsk1d broken coupling alignment kit with dial indicator gauges a basic stainless steel hardware set for taking readings off the coupling rim and face. Its flexible components are intended to cater for different shaft dimensions and coupling configurations. Dial indicator alignment basics dial indicators are measuring devices designed expressly to measure relative position. True measurement dial reading x compensation value examples if a 0. As a result, lets imagine an application where you have a tank at 100 psi and another at 95 psi. Aim to have all soft foot readings within 2 mils thou. The shafts are collinear at 12 the total indicator reading. The absolute encoder combining the electrostatic capacitance and optical. Im very busy reading vinces awesome tutorial on setting the timing and realized that i do not have a dial gauge and a probe to set the timing. 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. The plunger is a spring loaded part that can be depressed into the case causing the dial to move clockwise. Ensure fixtures are mounted at a position where rotation is possible.
Practice alignment procedure when one or both shafts are locked practice alignment when one or both shafts have limited rotation. Soft footwhat it is and how to minimize it vibralign. There are many reasons why dial indicators are a viable option to measure alignment. Correct the run out by your experience and also you can use equal triangles rule. It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or.
Laser devices provide higher levels of accuracy and also have automated features that simplify and speed up the work of measuring alignment. Machine type pump motor vertical angle horizontal angle horizontal offset thermal compensation stationary s machine movable m machine vertical offset offset 2. Is it possible to time the injection pump without a dial indicator on. When you install or assemble pumps driven by electric motors, make sure the unit is aligned properly. Additionally recommend strobe to combine ma chine rpm and belt speed to check for belt slip. Reverse dial indicator alignment procedure machines. Prepare a ring gauge to use as a reference standard for setting the zeropoint. By following this principle, the alignment of machinery can be easily accomplished using the formulas. This may be what messed up the existing gauge in the first place. Under the indicator position mark the point that is 12 the indicator reading.
Document asfound results using a format similar to that shown below. Combinations of brakes and reverse locks can be used to pre vent reverse pump. The procedure for doing reverse dial indicator alignment is not a difficult one. Motorpump alignment is the process of aligning shaft centerlines between a motor and a pump. For those not doing shaft alignment at all, for the longevity and reliability of your equipment, we highly recommend that you start now. Practice and learn different shaft alignment methods using dial indicators or lasers. Forget swinging the pump for the time being, as its just fine adjustment of rotating engine.
Dial indicator alignment basics alignment knowledge. Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication. Dial gauge alignment procedure in covered with detailed animation. Use teflon tape or pipe dope on the threads, and screw in. If the face dial contacts the coupling face directly, ensure the plunger of indicator contacts the coupling near its outer edge. Live view supports intuitive measurements and facilitates horizontal and. With the help of dial, mounted on a vertical stand generally refered as height gauge pick up the height of axis line of the motor. Basic shaft alignment workbook preface w elcome to the introductory book on. Those who purchase new alignment instruments and hand them out to field technicians who lack the knowledge of alignment fundamentals are often. Axial misalignment, end float, where the shaft centre lines are in alignment although the. Instruction manual thank you for purchasing the niigata seiki dial gauge. This paper is written by a laser alignment iconoclast. Sometimes by using the feeler gages alignments are also carried out.
Alignment report hung seng huat engineering product co. However, spacing them at the 9, 12, 3, andor 6 oclock positions only three of the four are needed will give a wider span, will give a more accurate. Maximize the sweep distance of the face dial indicator for the geometry of the machine being aligned. 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. Reverse alignment module 1550109 annotated instructors. Pdf basic shaft alignment workbook for industrial rotatin. The shaft alignment training course provides a highly practical knowledge of the use of dial gauge in coupling alignment. Alignment simple steps to accurate alignment its a long. Basic shaft alignmenl workbook combining the side and top views f yjew. Reverse dial indicator alignment procedure free download as pdf. Rotating only one shaft and using dial gauges to measure the opposing. The tksa 31 is skfs most affordable solution for easy laser shaft alignment.
If you can afford use laser alignment if you dont have dial gauge,then i. Use the straight edge for radial runout and feeler gauge for. Dial gauges or laser measurement devices are often used to provide more accurate measurements of the degree of misalignment between the motor and pump shafts. Install two dial indicators radially against the top of the pump shaft, at ninety degrees to each other, lets say at 3 and 6 oclock. When using this form, you may find it convenient to use mils instead of thousandths of an inch. Machine alignment for maintenance personnel in drinking water and wastewater facilities. Always check the shaft alignment with all the piping in place.
In cross section perpendicular to the axis of the ring gauge, position the gauge along diameter. Shaft alignment by dial test indicator dti horizontal alignment parallel shaft alignment by dial test indicator dti vertical alignment angular pump motor the indicators are zeroed on the top and read at the bottom record the indicator reading and consider the sag compensation by subtracting it from the recorded reading move the motor to. Shaft laser alignment 3 benefits over dial indicators. Is it possible to time the injection pump without a dial. Therefore, less accurate methods can be used at slower shaft speed. The capital cost outlay for a laser system versus a set. Perform reverse dial indicator alignment, using the mathematical equation. Formflex couplings permit great axial misalign ment with. Performance tasks under the supervision of the instructor, the trainee should be able to do the following. This allows the use of whole numbers and avoids confusing decimals.
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