Boring a stationary part - GIF

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Jul 3, 2021, 10:58 AM
Jon

Boring a stationary part - GIF

Boring a stationary part.

<video controls autoplay loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/boring_stationary_part.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>

Previously:

https://www.homemadetools.net/forum/...986#post129701
https://www.homemadetools.net/forum/...519#post166600
https://www.homemadetools.net/forum/...540#post162560
https://www.homemadetools.net/forum/...165#post153733
https://www.homemadetools.net/forum/...850#post152505
https://www.homemadetools.net/forum/...841#post100173
Jul 4, 2021, 02:54 PM
that_other_guy

I would like to know the application.......and the machine!
Jul 6, 2021, 06:19 AM
C Tucker

I've spent many hours line boring ""stationary" parts, like main bearing bores on big presses. we used a pretty much all shop built hydraulic set up to turn the bar and feed it.
Jul 7, 2021, 02:05 PM
nova_robotics

Quote:

Originally Posted by C Tucker

I've spent many hours line boring ""stationary" parts, like main bearing bores on big presses. we used a pretty much all shop built hydraulic set up to turn the bar and feed it.

Yup. Line boring is a big deal, particularly on job sites. We did a few 40-ish foot wide ones last year. They weren't continuous, but there were bushings at each end that had to line up. So we needed a bar that long to go between both bushings. It was on one of the two machines in this video (either foreground or background, not sure which).

https://www.youtube.com/watch?v=4ZA7-qX3Pxk
Jul 9, 2021, 07:28 PM
Toolmaker51

Quote:

Originally Posted by that_other_guy

I would like to know the application.......and the machine!

The video too brief 'down hole' to be accurately guessed, could be engine cylinder, main bearings, yoke of construction machinery, any of a variety of pumps, infinite range. Near certainly too big or far to haul indoors to a jobber. Can't get a good pause on the label of the rotating head, but one commercial example is called 'Rottler'. Over time many manufacturers, but always called a portable boring bar. Everything is included to mount in place, locate centerline, affix cutters and proceed.