Posted by Banditfarmer on May 02, 2014 at 06:48:57 from (65.27.225.54):
In Reply to: Heating Bearings posted by Jared in wi on May 01, 2014 at 21:09:41:
I use an old hot plate and a small skillet with a lid to heat them up. Were I us to work we had an Alcoa capper (bottling line) that needed an overhaul and new main shaft bearings. The main shaft had 2 6 inch inside bore bearings that had to be but on. Alcoa said the bearings were $1600 each and did not recommend we try to put them in and would send a service man down to put them in for us at no charge.
He showed up with 2 dozen bearings 2 huge coolers full of dry ice and a small over to heat the bearings. We had the main shaft hanging on a fork lift with the bottom in the dry ice while the bearing was in the oven. You have one shot to get them on right and if you don't you have to bust the bearing off and start all over. It took 8 tries on the top one to get it right and 4 on the bottom, He was there 2 day and 4 of us working with him to get it done. Alcoa only charged them for 2 bearings and nothing else. I was 19 at the time and this was the first time to see how heating and cooling worked together in this way. I learned a lot working for that company and it was better than going to school. Bandit
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