I’ve stratet to build my own jig for brazing quills for bicycles. I’m close to finished and so far all material used are scrap material I got as a bonus when buying a couple of steel benches for my and a friends workshops.
Here are some pics from when I changed the bearings in the gear of the Högboholm mill, in Mars 2018.
Bearing change in a older model of Arboga 308 grinder.
This is a good example of when the map is not not corresponding with reality. The exploded view I got shows a newer model with only two bearings. My machine turns out to have three bearings, two on the right side and one on the left side.
Here I’m rotating a rotary table by hand when milling in aluminium.
You can hear there is a little rattle in the noise and it comes from the cogs when using the planetary gear to decrease the motors rpm from 2910/1470 rpm to here approximately 775 rpm (slowest speed is 390 rpm). The carbide insert is a little dull as you can hear from the sound when cutting, and therefore the cut depth is only 0.2mm.
If you want just to replace the bearings you do not need to open up the electrical switch. If you need to open up the the electrical switch make sure all cables go free from the rotor when you put it together again. Also make sure the internal cables do not push to hard on the motors copper windings.
The rotor looks really nice