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Simple machine skates
PekkaNF:
Thank you
This one?
It's called (among others) Roller Crowbar or roller pry bar. Those are pretty good in some ocasions with other equipment.
That page had plenty of java and other scripts, 9 together on fast inspection. Google script record!
Those are cam rollers/followers or sometimes called track rollers. better ones have roller bearing inside and outer ring is extra thick. Normal roller bearing outer rings are way too thin to support nominal loads without support (thicker outer ring or close fitting wheel). Works ok when derated.
Pekka
PeterE:
Yup, exactly that one. Thanks for the naming, I didn't know that.
Having worked with it I know it works well and using one of those in one end and simple skates in the other it is quite easy to move hefty stuff round corners.
mc:
I made a set of machine skates a few year ago. One of the best things I done, as it's surprising just how handy they are to have.
Here's my castor one, although I've still never made a handle for it -
I used a big thrust bearing, which I machined a groove to help locate it on the base plate -
And welded a stub onto the rotating plate, which has a bolt/big washer on the underside to hold everything together-
And I've got two of these-
I just welded the axles in for simplicity. I did consider drilling/tapping them to accept retaining bolts, but if I ever do need to dismantle them, the weld can be ground of.
They were all built from 1/2" flat plate, as I happened to have a big sheet of it lying around at the time.
PekkaNF:
Very good.
How does the four wheel dolly turns under the load?
Pekka
mc:
--- Quote from: PekkaNF on August 24, 2018, 11:48:32 AM ---Very good.
How does the four wheel dolly turns under the load?
Pekka
--- End quote ---
It turns fine.
I really need to weld a handle onto the pivot to help with steering and pulling/pushing, but it works well just wedging a suitable lever/bit bar in when steering is needed. Made moving my big Shizouka into place easy.
I just checked, and I used a 51115 thrust bearing (75*100*19).
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