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10 years 10 months ago #9608 by mike malcolm
mike malcolm created the topic: casters
can anyone tell me if mark VII casters [that is the whole set] are the same as on the mark V? The ones I have seen in pictures on the 'bay seem \"different\"
Also has anyone replaced the wheels. It would seem to be the same prochedure as I have read about for the m5.
One machine rolls good, another kindof sticky and the \"headless horseman\" [no headstock] that I use to store spt's has no casters at all which is becoming very inconvient.

thanks mike

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10 years 10 months ago #9609 by DPF
DPF replied the topic: Re:casters
The casters are different than a V. The stem is shorter. I tried in vain to find adequate replacements. Any replacements have swivel bearings that increases the height just enough to keep the machine from fully resting when retracted. The original casters do not have swivel bearings, the stem is rigid to the body. The added 1/8\" of the swivel is enough height increase to keep the machine off the ground.

Also, many wheels are a slight bit wider or larger in OD. As a result, since space for rotation inside the boxes is limited, a small increase in either causes binding of the wheels in the feet/boxes when the casters rotate about the stem.

Best advice and what I plan to do. Get wheels and replace wheels on the the existing caster assemblies. Look to the post about casters in the MarkV forum. I'll have to track that down. There's a link to wheels I think will work.


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10 years 10 months ago #9611 by AZ IRONWOOD
AZ IRONWOOD replied the topic: Re:casters
Since I've not access to the particular model or casters mentioned, this may/may not work. From the description though, it seems as that removing the wheels, placing each on a thru-bolt [with fender washers], then lathe turning will reduce OD resolving height issue. Not sure if reducing thickness with a belt sander [etc] would cure the binding issue. I'm assuming the wheels are either hard rubber/plastic, that the pins can be drilled allowing for wheel demounting & that re-mounting can be via a mostly smooth-shaft bolt; the bolt to be nylocked/double-nutted/locktite.

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