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Reviewed in the United States on March 22, 2025
The machined nut for the ER32 collects are defective, unable to install collects. Machining process in not complete the area between the threaded portion and tapered head, has a out of round shoulder blocking the passage of the collet into the tapered head!This a chronic problem with the vendor making the nuts 3 separate orders were placed with 3 separate vendors all 5 nuts are defective.
christopher.robot
Reviewed in the United States on February 16, 2025
Pretty low quality - runout is pretty severe. I tossed it, but might be okay for your application, or with some tweaking.
Doug P
Reviewed in the United States on January 31, 2025
The media could not be loaded.
Ravanja
Reviewed in the United States on December 21, 2024
There are ER tools and then there are "ER" tools.The real question is what are you intending to use it for.This is an example of an almost there product. The threads are silky smooth, it is hardened, it looks good.If you are using this as a holder in the tailscock of a lathe, yeah, you'll have no problems.If you are using this in a milling machine, it will depend on what you are doing if its a suitable choice.The reason is runout.ER holders can be made extremely precise with near zero runout. If you use high precision parts throught, you can use it for most general purpose milling. If the runout is too high, then we get into issues of tool life and breaking.My particular sample has about 1.5 thou runout, tested without a collet. So the best I can get out of it will be 1.5 thou or higher with near perfect collets. This may be ok for the bigger ER sizes in non critical applications, but it's not going to cut it when using smaller endmills (pun intended).So applications you can use this in:Drilling holes in soft materials, milling soft materials.Drilling or milling in larger sizes in harder materialsLathe tailstock holder (rare application)If you need to make precisioin small holes or use small endmills. This is not for you. You will need to get higher precision tooling.This is one step above most drill chucks, but to be honest, I have a higher quality drill chuck that gets less than 1 thou runout at the bit. I may not be able to use it for endmills, it however can be used for small precise holes in hard materials while this collet chuck cannot.As can be seen in the pictures, the length is less than normal MT2 tapers. I imagine it is designed specifically for import small milling machines as opposed to general purpose MT2 tapers. So it works as a tailstock chuck on an import lathe, but not on an American made lathe with an MT2 tailstock. I have both, so 50% usage. An extra 1/2" in length would have made all the difference.Overall, I might get some useage out of it, but I was hoping for less runout and be able to use it for more demanding applications.
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