Bearings onto Shafts - Microwave

Haggis

Haggis

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UK
Should work, as long as the rag stays mighty wet, otherwise, sparky sparky

https://www.youtube.com/watch?v=LVODJm05plw
 
I put them on a stove hot plate.  Check temps with spit a wetted finger, when it sizzles, it's good to go.

piet
 
You need to have some form of control over the heating process.  Like to see you sticking your hand in a toaster or steamer. :o  How you getting the thing out of a sealed bag at over 100?C?  Will be cooled too far when you eventually do.  Gotta move FAST!

Place the bearing on an electric hot plate AND STAY WITH IT!  No use letting it simmer for an hour, it'll be ripe for the bin then.  Takes less than 2 minutes on full heat.  A saucer with water next to it so you can wet your finger(if you're too chicken to use your finger, rob some Q-tips from the bathroom), and an occasional test, easy as.  Once the water sizzles, it's expanded enough for a normal interferance fit to simply slip on.  A BBQ heat protective glove is enough protection to grab it and slip it on the shaft, which you have hopefully placed close by...

Industrial induction appliances are available, they do much the same at a far higher cost.  I have an old kitchen stove in the workshop, the oven is useful for heating cases and heads, etc, hot plates for bearings and bushes.  Picked it up for peanuts at the local secondhand store.  Single,stand-alone hot plates avaialable for the smaller workshop. :D

piet
 
... old news that LJ. Several years have passed since his prime and the same ring needs a a dunk in liquid oxgen these days.
 
Induction heaters might be expensive, but you can control the temperature very accurately.
I haven't got my own though, perish the thought!

The sizzle test can't be far out, 110 oC is about right.
 
I wouldn't think a microwave would be the right tool for the job.

I use a hot air gun. A bit like a lady's hair dryer but with more testosterone. It'll heat bearings to "spit sizzle" temperature quite evenly.
 
Dellortoman said:
I wouldn't think a microwave would be the right tool for the job.

I use a hot air gun. A bit like a lady's hair dryer but with more testosterone. It'll heat bearings to "spit sizzle" temperature quite evenly.
Click to expand...
Yep, heat gun as in paint stripper gun - or I use the little butane flamer - either works well. And like Piet says, work fast!!
 
I fit a lot of bearings with plastic cages, bit dodgy heating them with an open flame. :D  Prefer the gentler electric heating.

piet
 
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