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Is the problem electrical or mechanical?

Disconnect the motors from the unit and then run them. If the motors spin, then you have a mechanical issue (likely caused by binding from misalignment). ...

It could be in your program.... If you move in the x axis a 100 ipm and it's ok, then if you move in the y axis at 100 ipm and it's ok you're still going 100 ipm. HOWEVER, if you move in both the x...

You will not get "good" accuracry out of this component.

Screws are either rolled or ground. Ground screws are more accurate and more expensive. There's an ISO standard which rates the quality...

Start by tightening all of your bolts (just in case something worked its way loose). Then can you try to isolate the slop? is it coming from the bearings or from the screw (or the nut on the...

Without reading every letter of every post on this thread... I would like to confirm and correct some statements here...

A "Servo" really means "closed loop", regardless of the actualy motor...

Hi Matt,

you may have to do more than just change your bits. Regardless of what type of bit you get, you should be able to find out some information about that bit and how it likes to work. Just...

Hi RDCD,

Can you tell us more about your plans are? I've used these types of bearing successfully in the past and had no problems with them. It all comes down to understanding the application...

Yes, there is a difference between "square rail" (profile rail) and "round rail" (shafting + bearings)

Because this posting could go on forever about the difference between the two, can you please...

You can get what you need from PBC Linear.... give them a call at 1-800-962-8979

whenever I call, I usually ask for an application engineer. the last time I called, I spoke with "dave" and he...

Don't get us wrong, we're not saying that Igus does not make good products. The igus products work well, for certain applications. The problem people run into is that these bearings can not be used...

When you make your design (on paper) use only concentric rollers. I know this sounds weird, but it will make your life a lot easier! When you actually make your router, substitute the eccentric for...

Check out this new product from PBC Linear (aka Pacific Bearing)

http://ivt.pbclinear.com/IVT/integralvtechnology.asp

I saw this at a trade show and it looks perfect for a CNC gantry machine. ...

You could possibly turn it into a lead screw. If you kept it as a ball screw, the metal balls would eat through the plastic nut in short order and you would constantly be replacing the nut.

If...

The bevel is put into the ends of the rails to aid in the installation of the runner blocks (aka wagons, sliders, trucks, carriages, trolley). If you're not careful during installation, you can...

I looked for a ball screw calculator/formula, but I wasn't able to find one... so we can do a little logical assumption to help you come up with an answer. The stanards book I have says that the...

Sorry to be the bearer of bad news... as a general standard, profile rails are NOT made be be but jointed. If you want but jointed rails, you have to order them that way and the factory will grind...

I really like the technical section in NB's catalog. It's got some great pictures of how to mount profile rails to ensure high accuracy.

http://www.nbcorporation.com/product/slide_guide.html
...

Harry,

I think I've used just about every size of their redi rail product in one design or another. In general, I try to keep the system at 50% of max load or lower. I know that I could go...

I would also check out the following websites:

http://www.linearvguides.com
http://www.pacific-bearing.com

I've found both of these companies to be less expensive than BWC. From what I've...

Nobody can give you a straight answer at this point until we know the answer to this question:

What kind of tolerance do you want to hold on the part you are cutting?
a) +/- 0.001" (or better)...

You really only have one option: Steel shafting (I'm assuming that you don't need corrosion resistance)

Here are the main types of shafting:

1.) Feather Shafting (Ceramic Coated Aluminum) -...

THK has stocking locations throughout USA (main headquarters outside of Chicago). I would call their 800 number and ask what type of rail/carriage is most likely to be in stock and then go online to...

For my $0.02 worth, stick with brand names (Mitutoyo, Brown & Sharpe, Starrett). Any caliper or micrometer by these comapnies will give you great results--so long as you take care of it. Make sure...

I've spent lots of time banging my head agains my desk because of trying to mate the V-Guides up to one another. SolidWorks (and most other CAD programs) don't like tangential mates or any of the...

Haas is known in the industry for their great customer service and their high quality factory technicians. You can call them and they will give you a quote for replacing the ball screw in your...

There are two major players in the cable carrier business: Igus and KabelSchlepp Both are German companies with offices and manufacturing in the US (I think KabelSchlepp does more manufacturing in...

Couple of things... nobody has mentioned the obvious yet... the first thing that could be wrong is misalignment/binding in the Z-axis. Have you double checked to make sure that your system is...

I personally vote for Machinery Handbook... it has reference info for just about anything that you'll need.

No explination was given... there were some guesses... I talked to a two or three guys in order to try and figure out why... their best guess is that I didn't have it aligned properly and when we...

Here's some additional info on bearings:

All of the bearing guys (Thomson, THK, NB, INA, Pacific Bearing, SKF, etc) have two types of bearings: a precision fit which has a flat exterior and a...