Hello all,
I am trying to find a guide for visual inspection on wear for open gears (girth gear and pinion). Specifically for ballmills or kilns. I saw the AGMA 1010 E95, but I am trying to find measurement points and how to take them.
In my country we do these measurements (backlash...
Hello,
I recently came across bearings for a ball Mill that has on the housings 2 pivoting guides. What are these for? I will try to find a picture to post it. They are underneath the base of the housings and I do not know if there are to allow movement in a direction or what is its...
Hello,
Recently a shaft for transmission of a ball mill was damaged. We want to use the same pinion, and are now fabricating a new shaft. We have doubts on the interference fit of the pinion with the shaft. I have not found any tables for this particular application, and I wonder if you can...
At one of the plants they are asking me the following:
They have a NEW double helical pinion (it has a gap in the middle) and they have a USED herringbone gear.. You can see where this is going...
They are supposed to be same pitch, et cetera... However, I have not seen before a double...
Hello all,
I have a bit of a problem. I have a spare girth gear that (might) belongs to a ball mill, and I need to check it with the pinion, and perform contact test, backlash, radial and axial runout (2 sections), et cetera). There is a distinct possibility the pinion does not correspond to...
I recently encountered a girth gear in an old ball mill with fasteners (to hold the sections of the girth gear) with threaded rods and nuts on both sides. I do not believe this to be the original design. And it got me thinking about the difference of fastening the gear sections with a...
Hello,
I have a problem in a cable drum for a mine shaft. This drum is smooth, so it has no lebus grooving for the cable to set, and also has 3 layers of cable, and it always works on the 2nd and 3rd layer, so I do not know if installing a lebus grooving would help.
The problem is that the...
Hello everybody,
I am looking to extend to the fullest the lives of our belts (in belt conveyor). We already do regular preventive maintenance (inspection, roller changes, lubrication, etc).
Want I want to find out is if there is any predictive maintenance that can be done in belts, like...
Hi all,
I am a maintenance engineer in a big firm and I always wanted to do a masters in engineering. I like my job, but I do not want to be here for the rest of my life (who does?). So I have a Bs in mechanical and electrical engineering and I want to do a Ms in energy but I don't want to...
Greetings gear people,
I am asking a gear vendor to provide me with a set of helical gears. And although I am not specialized in gears I seem to remember that the pinion and gear shouldn't be from the same material (I also consulted Mark's Handbook) and I asked the manufacturer to comply with...
I have seen in the skf page a program for choosing (depending on the bearing type and the working temperature) the viscosity that a bearing should work...
Where can I get the values of these graphs?? I there some other way to determine the correct viscosity??
Hello!
I have seen many and very interesting threads, but I have yet to find information (or where to get it) for vibration analysis for bearings.
I know some use Vdb in FTT, or mV in demodulated (only radial because it takes to long to measure in three directions). But I have not found an...
What is the best method??
I know about the formulas and charts, but I feel they're general and are not based in important parameters like application, grease, dusty environment, unbalanced loads, et cetera.
I have tried listening with an industrial stethoscope, but I couldn't detect much...
