<![CDATA[SoliForum - 3D Printing Community — Unthreaded Z rod size?]]> 2014-11-12T06:50:23Z PunBB https://www.soliforum.com/topic/8291/unthreaded-z-rod-size/ <![CDATA[Re: Unthreaded Z rod size?]]> the so called  lifetime sealed sleave bearings have oil soaked felt in pockets on sides with a few tiny weep holes to inside surface so when friction heats it makes oil wick towards heat but these dry out after a few years or wash out if used on outside condensers in weather. non oil impregnated bushings/sleave bearings have hair like groves scored on inside surfaces running in a crisscross diagonal spiral looking like the guide shaft on an open face spinning reel so when shaft turns either direction the oil/grease can be spread from outer ends where its added to inner surface of bushing and if those groves get worn or cut away from drilling etc lube fails to save shaft from burnning/waring out. babbet bushings that where formed onto shafts by poring molten  silver or bronze into form around shaft inside stuffing box before modern bearings came along relied on a grease or heavy oil bath with felt pacing holding it close to babbet like the jornal boxes on railroad car trucks hence the term "hot box" when they failed to lube good and got over heated melting babbet material allowing axle to seize possibly derailing train. I have replaced hundreds of different bearings and the soft steel or brass shafts due to poor lube and most times it cuts deep into shaft b4 getting noticed as needing serviced. causing lots of associated parts damage and smoking from glowing red burning old lube

]]> https://www.soliforum.com/user/795/ 2014-11-12T06:50:23Z https://www.soliforum.com/post/71591/#p71591 <![CDATA[Re: Unthreaded Z rod size?]]> N2ri, I thought most bushing didn't have grooves, but just had the oil impregnated in micropockets? Is that only a surface finish, as you suggest?

]]> https://www.soliforum.com/user/192/ 2014-11-12T06:25:05Z https://www.soliforum.com/post/71590/#p71590 <![CDATA[Re: Unthreaded Z rod size?]]> also for future ref. if not going linear which cant be drilled out lol. most bushings have weep groves inside to allow lube to spread around when turning and drilling would remove those

]]> https://www.soliforum.com/user/795/ 2014-11-12T05:19:28Z https://www.soliforum.com/post/71584/#p71584 <![CDATA[Re: Unthreaded Z rod size?]]> AZERATE wrote:

On a side note:
MAN! I just checked the cost of 3/8" rods and linear bearings!!! F(*^& expensive...$25 per unit for bearings and $33 for 36" long rod. Wish I had access to a lathe and just shave this rod down at this point.

?

$8 for precision ground tool steel, 3 feet long from McMaster.

]]> https://www.soliforum.com/user/221/ 2014-11-11T21:01:22Z https://www.soliforum.com/post/71527/#p71527 <![CDATA[Re: Unthreaded Z rod size?]]> At this point I would go your route.  After all you did screw up a rumba twice wink

]]> https://www.soliforum.com/user/2291/ 2014-11-11T20:58:21Z https://www.soliforum.com/post/71526/#p71526 <![CDATA[Re: Unthreaded Z rod size?]]> IronMan wrote:

How 'bout just buy 10mm bearings? smile

http://www.amazon.com/LM10UU-Linear-Bea … B00AGCOUBM

I didn't even see those and I searched and searched for a whole 45 seconds wink

]]> https://www.soliforum.com/user/4188/ 2014-11-11T20:58:09Z https://www.soliforum.com/post/71525/#p71525 <![CDATA[Re: Unthreaded Z rod size?]]> How 'bout just buy 10mm bearings? smile

http://www.amazon.com/LM10UU-Linear-Bea … B00AGCOUBM

]]> https://www.soliforum.com/user/131/ 2014-11-11T20:54:48Z https://www.soliforum.com/post/71524/#p71524 <![CDATA[Re: Unthreaded Z rod size?]]> Wow those rods are expensive. Am I to assume that those are not stainless steel prices as well? Holy cow. SD must get a good deal on them or something.

And I know how bulk pricing works but if they're that much more individually I'm sure the unit price in bulk is also higher.

]]> https://www.soliforum.com/user/7321/ 2014-11-11T20:46:22Z https://www.soliforum.com/post/71523/#p71523 <![CDATA[Re: Unthreaded Z rod size?]]> Do I really look like a guy that needs everything spelled out for me?
Yes. I suppose I do.... sad Sad panda.

Unfortunately I do not have immediate access to a drill press since it is not on site, nor do I have 10mm bits on hand, but that can be solved with $8. Plus, I would then have to widen the holes of the frame by about half a millimeter. I don't mind putting the work in at all, but if I could simply buy something and drop it in, I would take that route. Lazy consumerism, eh? wink

]]> https://www.soliforum.com/user/4188/ 2014-11-11T20:42:09Z https://www.soliforum.com/post/71521/#p71521 <![CDATA[Re: Unthreaded Z rod size?]]> But you have 10mm rods why would you buy 3/8 in linear bearings?  Couldn't you also just drill out the bushings?
If there was only some place that would say have things like drills to rent wink

]]> https://www.soliforum.com/user/2291/ 2014-11-11T20:21:50Z https://www.soliforum.com/post/71519/#p71519 <![CDATA[Re: Unthreaded Z rod size?]]> My primary concern is for the rods to fit the bushings for the stock platform.
Inner diameter of the bushings are 9.53, so that all works out.

On a side note:
MAN! I just checked the cost of 3/8" rods and linear bearings!!! F(*^& expensive...$25 per unit for bearings and $33 for 36" long rod. Wish I had access to a lathe and just shave this rod down at this point.

]]> https://www.soliforum.com/user/4188/ 2014-11-11T20:15:52Z https://www.soliforum.com/post/71518/#p71518 <![CDATA[Re: Unthreaded Z rod size?]]> elmoret wrote:

3/8" is 9.52mm.

They're not bad tolerance, they're SAE. Solidoodle loves mixing and matching SAE/metric.

Okay, so it's a poor tolerance SAE 3/8 rod then wink  Actaully having a really bad math day!!!  You might want to measure the bushings you are using or use linear bearings.  No reason not to utilize those rods.

]]> https://www.soliforum.com/user/2291/ 2014-11-11T20:02:08Z https://www.soliforum.com/post/71517/#p71517 <![CDATA[Re: Unthreaded Z rod size?]]> Couldn't you drill out the holes to make it work? And that rod looks like it has blood on it lol.

]]> https://www.soliforum.com/user/7321/ 2014-11-11T19:57:10Z https://www.soliforum.com/post/71516/#p71516 <![CDATA[Re: Unthreaded Z rod size?]]> elmoret wrote:

3/8" is 9.52mm.

They're not bad tolerance, they're SAE. Solidoodle loves mixing and matching SAE/metric.

Thanks!
I blindly ordered a 36" 10mm rod under the assumption that would be the proper size.
http://i.imgur.com/zh9w3Dg.jpg
No biggie though, at least I have a few uses for the rod I got. big_smile

]]> https://www.soliforum.com/user/4188/ 2014-11-11T19:52:57Z https://www.soliforum.com/post/71515/#p71515 <![CDATA[Re: Unthreaded Z rod size?]]> 3/8" is 9.52mm.

They're not bad tolerance, they're SAE. Solidoodle loves mixing and matching SAE/metric.

]]> https://www.soliforum.com/user/221/ 2014-11-11T19:41:06Z https://www.soliforum.com/post/71514/#p71514