One of the most important aspects of rotary kiln maintenance is ensuring your kiln is perfectly balanced and rolling as smoothly as possible. Ideally, ring-to-roller wear should be kept to a minimum, while keeping the load-balanced between the thrust rollers. This is done by making slight adjustments to the angle of the kiln support-roller shafts, a process known as “training” the kiln.
Training a kiln is tricky and takes practice, or else it can be handled by expert kiln maintenance professionals. Here are some tips to keep in mind!
Four Things to Remember When Training Rotary Kiln Support-Rollers
- Only make tiny adjustments
Put dial indicators on your bearing housings so that you can precisely record any adjustments made because these adjustments need to be minimal. Never move them more than 0.020″ (0.50 mm) at a time, or even less, because tiny changes here can potentially result in significant changes to the behavior of your kiln.
- Training takes time
This will be a slow-and-steady process that could potentially take a couple of days because it can take several hours for the full effects of your change to propagate and become apparent. Tweak, wait, measure, then tweak again if needed. Do not get into a hurry, changing too much at once could cause significant problems.
- Always keep detailed records
You want to have a complete maintenance log of every change you make to the support-rollers, no matter how minor. This will help you narrow down the best operating parameters for your kiln and can also be useful for troubleshooting should you ever need to call in kiln repair specialists.
- Use the ‘goalpost’ technique to remember the direction of changes
Face the running side of the rotary kiln, directly in front of a carrying roller. Then hold your hand’s palm down, index fingers out, thumbs pointing inwards – like a goalpost. Your index fingers should be pointing slightly outwards at the bearing roller, while your thumb points inwards. This indicates how changes will affect the mechanism. Moving the kiln support roller outwards will cause the kiln to shift slightly inwards, and vice-versa.
Kiln Technology LLC Has the Expert Support You Need
We are one of the nation’s leaders in kiln sales, maintenance, repairs, and spare parts. If your business relies on a kiln, you can rely on us to keep it turning! Contact us and let us know how we can help.