HANDBOOK OF SHAFT ALIGNMENT PART 13 PDF

To determine the corrective moves for this drive system in the top view, a clear transpar- ency with the right-angled gear shafts transferred to the transparency will be of assistance in determining what lateral moves need to be made to correct the misalignment condition as shown in Figure[r]

(see Figure 11.13 and Figure 11.14), which gets rid of axial float, leaving only the face misalignment.
With a single vernier caliper, getting the bottom reading can become difficult or dangerous trying to use a mirror or borescope to observe the running reading there. A modified design s[r]

Based on how the measurements were taken, it is not known in this particular drive system if each of the machine cases expanded symmetrically. Since the measurements were taken on tooling balls located directly under the shafts, the machine cases could have bowed outward near the center of[r]

12. What effect does dirt, grease, oil, fingerprints, moisture, etc. have on the laser collimating lens or protective optics? If detrimental to the operation of the system, how should one clean the laser optics?
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7.4.2 MAKING CORRECTIONS IN THE VERTICAL DIRECTION
Well, that is, if you are talking about horizontally mounted machines. The most commonly used device to change the height or pitch of a machine case is shim stock. Shim stock is flat sheets of metal rolled or ground to thickness ra[r]

and you can then determine the side and bottom readings. Simple enough, but what if you had to zero the indicator on the right side of the shaft and only rotate 30 8 clockwise?
We know that the curve generated from the measurements around a shaft is a sine wave, but what ang[r]

over the mandrel, and a dial indicator is positioned against the bearing and then anchored to the table. The bearing is then moved toward and away from the dial indicator to measure the clearance.
The radial bearing clearances mentioned above are not for all types of sliding-type bear- in[r]

casing and rotor expansion and contraction are taken into account to minimize excessive positional change of the rotor during operation. However, movement of the shaft invariably occurs from OL2R conditions that can range considerably from unit to unit. In addition, rotor expa[r]

phase angle data
Operate the rotor at the balancing speed, and with your analyzer filter tuned to the rotating speed of the rotor (i.e., 1 x RPM). Proceed to measure and record the original unbalance amplitude and phase data. This will be called the “Original” or “O” vector. 6.

After an hour or so, each team was at their machine and I began to loop back to the first group that we dropped off to see how they were doing. As I approached I noticed that they were busily working on the machine and as I walked up one of the mechanics noticed I arrived and with a big smile[r]

Proper training must also provide information on runout detection and correction, soft foot correction, measurement instrument basics, rotating machinery design basics, foundation and baseplate repair techniques, bearing information, coupling information, machinery movement tools, alternative machin[r]

Encyclopedia Britannica , various volumes.
Garrison, E.G. A History of Engineering and Technology: Artful Methods , CRC Press Inc., Boca Raton, FL. Grun, B. (1991) The Timetables of History , Simon & Schuster Inc., New York.
Hecht, J. (1992) The Laser Guidebook , McGraw Hill, N[r]

of tubing is used to support a ‘‘radial arm’’ holding a measuring device, in this case, a dial indicator. Figure 21.90 shows a close-up of the radial arm assembly.
The radial arm has the capacity to slide up and down the center tube enabling one to measure any point along the lengt[r]

3. Pay particular attention to step 4 (the preliminary checks). Over half of the time someone is having problems aligning the machinery, it is due to something in this step. Again, without trying to be excessively repetitive, do not pretend you did these. Even if you did, go back and check th[r]

4.9.2 S TRAIGHT B ORE —S LIDING C LEARANCE WITH K EYWAYS
This method of shaft and coupling hub fit is used extensively in the industry and provides the easiest and the quickest installation of the coupling hub. However shaft fretting is likely to occur with this sort[r]

Measure the distances across each sheave at the upper and lower gap measurement locations. Determine what type of gap condition you have based on the four different configurations shown below. Using feeler gauges, measure and record the amount
of the gaps (in mils) in the appropr[r]

The operator interface module has two basic functions. It receives the electrical signals from the PSDs mathematically transforming the information into distance measurements along with information that we give it concerning the machinery we are working on. It then interprets all the data and direct[r]

On the other hand, when two or more shafts are connected together by some flexible or rigid element where the centerlines of each machine are not collinear, the forces transferred from shaft to shaft are acting in one direction only. These forces do not change their direction, a[r]

8.4.3 P LUS M EANS ‘‘L OW ’’ AND M INUS M EANS ‘‘H IGH ’’
Where and how to position the rotating machinery shafts on the alignment model will make far more sense if you reason out what the measurement sensor has told you. If you zero a dial indicator at the top of a shaft, swe[r]

As mentioned at the beginning of this chapter, very few people conduct OL2R machinery movement surveys. Assuming that your rotating machinery does not move from OL2R conditions is nothing more than burying your head in the sand and pretending that everything will automatically align itself[r]