The vblock mounting clamps are 78 wide and supplied with chain to accommodate shafts from. The accelerometer, mounted on bearing 1 is required to measure the acceleration. Common cardan shaft alignment with laser the cardan shaft is removed and a longarm bracket is used to overcome the offset between the machine shaft centerlines. Baltech sa4300, misalignment, installation of electric. In practice, proper alignment is difficult to achieve without using alignment equipment such as dial indicators or laser alignment tools to check and correct for misalignment. The alisensor shaftlaser features a 3d layout with live alignment diagrams and graduated tolerance control to show both acceptable and excellent tolerances. Tmea2skf laser shaft alignment alignment performed by. Accurate laser shaft alignment of the driver to the driven machine requires that the cardan shaft and its couplings be removed. My back shaft is easy to photograph and it conforms to what the magazine refers to as having the yokes in the same plane.
Mechanical engineering a series of textbooks and reference books founding editor l. A proper alignment of engines gear box and utility increase the life time and efficiency of the machine. A machine properly aligned will be a reliable asset to the plant, it will be there when it is needed and will require less scheduled and unscheduled maintenance. Continuing education units ceus and contact hours upon completion of this training program, the attendee will receive a certificate of completion with 8. Offset denotes that the shafts of the driver and driven elements are not inline with each other. The easylaser system is very intuitive and reliable and guarantee precise and quick on site alignment.
I myself have seen electricians and mechanics alike becoming frustrated trying to determine the cause of speed fluctuations and vibration in offset shaft driven equipment. To achieve this goal, components that are the most likely. The minimum swing radius when mounted on a 1 shaft is 538. Typical alignment tolerances are summarized in table 1. Introduction the main propulsion shaft line is the essential part of a modern ship propulsion system, exposed to various conditions throughout the ships lifetime. Shaft alignment a proper alignment of engines gear box and utility increase the life time and efficiency of the machine. In practice, proper alignment is difficult to achieve without using alignment equipment such as dial indicators or laser alignment tools. Alignment supplies introduces new shaft alignment system. The motor shaft is 60mm diameter and the screen shaft is 55mm diameter. 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. Installation of electric motors and repair of fans are performed easier and faster if you also use the calibration steel shims baltech23458n series. Understanding the need for offset shaft alignment vibralign. Machine alignment for maintenance personnel in drinking water and wastewater facilities. Designed to clamp to shaft and reach over coupling.
Cardan shaft s without length compensati on have a constant length l1 corresponding to the working length. Alignment tolerances proper shaft alignment is especially critical when the motor is operated at high speeds. Sea trials showed that the alignment was very successful. Continuing education units ceus and contact hours upon completion of this training program, the attendee will receive a certificate of completion with 8 contact hours. Fixturlaser shaft alignment instruments are custom made with firmware features that ensure high measurement accuracy and with mounting hardware that is ideally suited for optimal alignment of the gearbox and generator shafts in wind turbines. The objective of optimized shaft alignment is to increase the operating life span of rotating machinery.
Do not run a w arrangement in plan and a z arrangement in elevation or vice versa at the same time on one shaft. Increase bearing life reduce stress on couplings and thereby the risk of overheating and breakage reduce wear on seals, helping to prevent contamination and lubricant leakage reduce friction and thereby energy consumption reduce vibration. Skf laser alignment system shaft alignment tool tksa 41. Grc phase 3 focused on identifying any abnormal loading on the gear, shaft. Correctly aligned and regularly controlled machines significantly reduce operating and maintenance costs. Fasteners are a critical component of the precision shaft alignment process, yet the importance of fasteners is many times overlooked. This is a fully automated set for shaft alignment of horizontal and vertical machines. Shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. Shaft line alignment analysis taking ship construction.
Combine laser and computer software technology with your handson skills to help with shaft alignment. Conventional methods for shaft alignment, such as straightedge, thickness gage or dial gage, are very time consuming. Shafts are breaking or cracking at or close to the inboard bearings or coupling hubs. Depending on the shaft configuration, one of the two available methods can be used. Monitor the machine corrections concurrently in both horizontal and verti cal directions with laser and sensor mounted at any angular position on the shaft. The length of the motor shaft between its bearings is the resistance arm. While at facilities across the country i noticed a lack of understanding regarding the need for precision alignment of offset shaft driven rotating equipment. With the bracket installed, a simple shaft alignment occurs using an uncoupled measurement mode as laser and receiver are both turned independently of each other to take measurements.
Skf is launching two new shaft alignment tools, tksa 20 and tksa 40, which are highquality, userfriendly instruments that enable users to accurately align shafts by means of laser beams. The thermal growth compensation function allows the measurement system to calculate the correct shims and adjustment values even in such cases. Mar 03, 2014 the driven shaft to rotate unevenly during operation, which results in increased vibration. The measurement principle the sweep measurement mode concurrent live move. Reducing energy consumption and avoiding machine breakdowns are important goals, says benjamin provoost, development engineer, skf maintenance products. When a driver like an electric motor or a turbine is coupled to a pump, generator, or any other piece of equipment, it is essential that the shafts of the two pieces are aligned. May 07, 2007 alignment tolerances proper shaft alignment is especially critical when the motor is operated at high speeds. Training classes back to all classes reliable precision maintenance date. The dummy shaft was lined up with the gearbox input shaft. Standard industry norms for alignment tolerances are cited in table 1. Shaft alignment has never been easier, quicker and more affordable accurate shaft alignment helps you.
These changes in the shaft alignment can be accommodated in a few different ways. Alignment in gearing i by geometer shafts driven one from another by gearing may be disposed parallel, at an angle or cross wiseaccording to the type of gearing employedand satisfactory operation can often depend as much on alignment of the gears on the shafts, as on the spacing of these or on precision in the gear teeth profiles. Shaft line alignment and lateral vibration analysis are especially sensitive to proper boundary conditions determination. Highend systems for shaft alignment and geometric measurements. Engines, gearboxes and propeller shafts on ships are aligned using the easylaser system.
Rotalign touch is the first laser shaft alignment system on the market to combine high precision onsite measuring tasks and cloud connectivity for worldwide data access and transfer. The shaft alignment store accepts orders and ships to usa based customers only. By helping industries worldwide to become perfectly aligned, and eliminating anything that might not be, we minimize unnecessary wear and production stoppages. It features the unique sensalign 7 laser and sensor heads offering a full range of everyday alignment routines up to expert degree alignment jobs such as cardan shaft alignment or coupling alignment. Then, through the use of a laseralignment system and a specially constructed cardan offset bracket, the angle between the machines can be easily determined and corrected. In nauticus machinery shaft alignment these effects can be carefully considered when designing an optimal shaft line in order to avoid problems in operation. Fluke 830 laser alignment tool manual pdf instrumart. Fixturlaser is a global player and leader in developing innovative, userfriendly equipment for shaft alignment. Cardan shaft alignment simplified using latest laser.
Now, to my astonishment my front drive shaft is set up exactly the opposite. The dummy axle was angled 140 and the intermediate shaft was aligned with the dummy shaft. Changes in the temperature of machines from off line to running can have a significant impact on the shaft alignment. Driving and driven shaft centerlines are parallel to each other driving and driven shaft centerlines intersect in both cases. It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or.
The ins and outs of engine and shaft alignment part i from the. Thanks to flexible brackets you can install the equipment in the most appropriate place. The product possesses a high resolution color backlit tft screen, file storage capacity of up to 200 measurement files, and an alignment condition led that gives. Jan 22, 2014 while at facilities across the country i noticed a lack of understanding regarding the need for precision alignment of offset shaft driven rotating equipment. If bolting is not selected, assembled, and torqued correctly, it can make the precision shaft alignment process less accurate, more difficult to achieve, and potentially harmful to the machines. Jul 26, 2014 alignment procedure taking alignment readings step no. Ive drawn a cross on each yoke so you can see clearly that they are indeed in alignment. Baltech sa4300 is an electronic and mechanical alignment system with digital electronic indicators. Shaft alignment is the process of aligning two or more shafts with each other to within a tolerated margin.
Intelligent cardan shaft alignment alignment solutions for all types of cardan shafts with specially designed brackets and new measuring methods, the rotalign ultra is platform allows cardan shafts to be aligned without removing the shaft. Shaft alignment has never been easier, quicker and more. While engine alignment is well understood by most marine industry professionals, shaft alignment is far more esoteric and well understood by far fewer folks in the industry. A practical guide to shaft alignment plant services. The ins and outs of shaft alignment part ii zf marine propulsion. Live view supports intuitive measurements and facilitates horizontal and vertical alignments. The objective of shaft alignment is to minimize coupling forces by making two rotational axes form a single line while the machine operates. On completion of training on the four easy steps to good shaft. Vibration wear energy usage proper alignment increases reliability. These changes in the shaft alignment can be accommodated in a.
Shaft alignment thermal growth compensation in many cases, the machines for example a pump and motor expand considerably from a cold to a hot state operating temperature. Shaft lines with pointwise, ideal stiff models of journal bearings are common. Proper shaft alignment is especially critical when the motor is operated at high speeds. The engine was aligned with the intermediate shaft. Sheng, ndition of the shaft alignment is crucial in order to make intelligent.
Apr 21, 2017 there is another side to the alignment story. Length defi niti on the working length ebl of your cardan shaft defi nes the distance between the drive and output units and the values of changes in length occurring during operati on or at standsti ll. In nauticus machinery shaft alignment these effects can be carefully considered when designing an optimal shaft line in order to avoid problems in. 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. Nowadays, it is still difficult to find out realistic data for all the shaft line foundation characteristics. Those systems are used to align generator and gear boxes in wind turbines, propellers pumps ecc ecc.
Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication. 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. The rotalign ultra and the optalign smart both feature superior single beam sensor technology that allow uncoupled measurements to be taken accurately. Dec 01, 2002 shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications. The laser is mounted on a rotating frame which simulates the centerline of the non.
Clean, dress up and file any burrs from mounting faces and anchor bolt. Good shaft alignment practice should be a key strategy in the. Page 6 manual cardan shaft fixture p0208gb alignment procedure preparations. Shaft alignment handbook, third edition, crc press, 2006.
Rotalign touch advanced laser shaft alignment system. Faulkner columbus division, battelle memorial institute and department of mechanical engineering the ohio state university columbus, ohio 1. Shaft alignment report measurement program horizontal operator user measurement unit mils temperature 80. For maintenance personnel in drinking water and wastewater. An offset shaft, or cardan shaft as it is typically called,is a drive shaft, with ujoints, used to transfer power from a motor driver to a piece of equipment driven.
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