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Accusize R8 Shank Plus 15 Pcs ER40 Collet System, 3/32" - 1", 0223-0984
R8 shank threading: 7/16"-20
- Wide holding range of each collet requires fewer collets and changes
- Unique self-releasing system eliminates sticking
- Suitable for all milling and drilling operations
- Flute holding capability for the highest concentricity and clamping power
- Accuracy to 0.0004"
- Run-out Tolerance: 0.0004"
- Complete kits include chuck holder, nominal size collets, non-slip spanner wrench, and case.
- 15 Pcs. Set includes the following collet sizes: 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16" and 1"
- Includes the wrench & R8 Bridgeport shank.
- The collet nut is made eccentric, ISO 15488:2003(E) compliant
ER collects are the most widely used chucking tools(clamping system) in the Mechanics of today. Its versatility continues to grow. The rate of growth continues to increase. We provide various ER collets such as ER11, ER16, ER20, ER25, ER32, and ER40 collets. Also, we supply a great number of ER collet chucks for the ER collets, e.g. CAT50, CAT40, BT40, BT30, R8 Shank, Morse Taper Shank, Straight Shank, ISO40 Shank, Collet Blocks, 5C Shank, etc.
Moreover, we have various ER collet and ER collet holder bundles that save your time of selecting collet sizes and ER collet holder types. E.g. MT2 Shank ER32 Chuck with 11Pc Collets Kit, 5C Shank ER40 Chuck with 15 Pc Collet Set, BT40 Shank and 12 pcs of Er32 Collet Set, etc.
Furthermore, we are increasing the number of types of ER collets and collet holders we carry. Meanwhile, we keep upgrading the quality, reliability, design and affordability of our professional tools.
Specifications of R8 Shank to ER40 Collet Chuck.
Run-out Tolerance: 0.0004"
The ER collets and the ER collet chucks are designed and made in accordance with ISO 15488:2003(E). Especially the eccentric design of the inside of the collet nut is to help increase the capacity of the collet nut and improve the assembling efficiency of the entire tool kit.
- Run-out Tolerance: 0.0004"
- R8-ER40-2.83"
- R8 shank threading: 7/16"-20UNF
Design, Assemble, and Dissemble
Eccentric Design, ISO 15488:2003(E)
The inside of the ER collet nut is intentionally designed like off-centering to help mount the ER collet much easier. It is in accordance with the requirements listed in ISO 15488:2003(E). If it is made symmetrical, the ER collet with the diameter larger than the inside size of the collet nut cannot be installed.
Assemble
Insert the ER collet into the nut at an angle. Lock it onto the eccentric groove of the collet nut and push it in. (Insert the cutter right after the step, before connect it to the holder/chuck/arbor.)
Inspection
Inspect the RPM of the ER collet, ER collet nut, ER collet holder/chuck/arbor, etc.
Runout Tolerance: 0.0004"
Dissemble
take out the tool bit, press the end of the ER collet until the collet off the position. Push it out of the nut. (after take out the nut out of the holder.)
skeeter
Reviewed in the United States on August 16, 2024
First, the fit & finish is excellent, very good. However the measured runout of the collet holder is an order of magnitude larger than specified. Having worked in a mechanical laboratory and metrology for 30+ yrs I'm well aware of how to measure tolerances on spindles, bearings, etc. The spec says 4 tenths (0.0004) runout but I've not been able to get better than 2.5 thousandths (0.0025) on any given measurement attempt in the machine. With ground pins installed (0.375 & 0.5) in their respective collets I've measured 0.0025 at best (0.0045 at worst) but that's in the machine where you can expect a thousandths or two runout on most any tool installed anyway. The machine spindle alone measures 1.2 tenths (0.00012). Measuring just the holder itself on the collet taper surface shows the about same 2 thousandths as with the pins. Measurements on the surface plate with fixturing shows a little less than 0.002 at 0.0014. Either way it's not close to 4 tenths (0.0004) as indicated. Is it a big deal? Probably not for most applications but be aware that you're not going to get NASA level accuracy with this set. Although, your mileage may vary :)
OverACliff
Reviewed in the United States on July 1, 2024
An R8 collect cannot hold a 3/4 inch endmill all the time. So you have to purchase another end mill tool holder. I first pulled the trigger on a Weldon Shank tool holder, sent them back, and then purchased the ER32 tool holders. I am please so far. Using a 3/4 inch endmill on tool steel - no slippage. Good purchase.Would recommend.
Customer
Reviewed in the United States on May 15, 2024
its funny that people are complaining about the off center hole in the collet nut. the purpose is to retain the collet. it only works when you snap the collet into the nut first and then tighten it down. at first I thought it was not right but then compared it to another known good collet nut and it is the same off center hole. they do it on purpose lol. i haven't checked for concentricity yet so cant give a complete review, but they seem nice and no burrs or poor quality to mention yet. i just wanted to mention what i found about the off center hole before more people turn it on a lathe to "fix it" lol
AP
Reviewed in the United States on December 29, 2024
This is a good set of collets.Can’t beat the price.Made a collet chuck for my lathe and used this collet nut. Still working great.
Matt
Reviewed in the United States on January 30, 2024
works very nice if your always changing out different tools for a certain job makes the job alot faster than always loosening up the drawbar and pulling out the r8 collet for another one..i like the tool and use it everyday
Mike H
Reviewed in Canada on December 9, 2023
Nice finish and accurate.
jonathon pearce
Reviewed in Canada on February 18, 2022
Works great no issues
D Shepherd
Reviewed in Canada on October 5, 2022
Came in good condition and on time ..
Donald S. Frost
Reviewed in the United States on September 3, 2020
I am very pleased with this set. I bought it to increase the size and flexibility of my R8 collets. I have found this easy to use (once I figured out the “trick” of tipping the collet to get it in and out of the nut). I get 0.001” TIR with various collets and tools.I did receive a “special” collet set with two 3/16” collets and no 1/2” collet. I contacted the company and within two days I had a 1/2” collet. I was very happy with their quick response time and with their customer service department.If you want a collet set that covers from 0.079”-1.024” (2 mm - 26 mm) without any gaps, you will need to purchase the metric collet set. Each collet has a 0.039” (1 mm) gripping range, and there are a few small gaps in the inch collet set.I am thinking about getting the inch collet and holder for my son. I have found this set a great addition to my home machine shop.
Andy
Reviewed in the United States on June 3, 2020
Quality control on the product is not very good. The chuck seats well with no collet in it. When I placed a collet in to test fit, it only fought about 2 threads, which I knew could not be correct. On inspection I saw that the ID had not been finished out. There is a very off-center rough hole that a simple visual inspection before packaging would have caught.The material quality seems good and the collets were fine, so I chucked it up on the latch and finished building the tool...It works well now, but I shouldn’t have to machine my own tools when they arrive. I wasn’t looking for DIY. If you don’t have the tooling required to do this, you are going to have a useless chunk of metal. Caveat Emptor. Make sure you can finish machining the part on your own. I added before and after photos for your consideration.I considered sending it back, calling the company, complaining....Then I figured I’d leave an honest review and save others some potential trouble.
Nick P.
Reviewed in the United States on October 4, 2018
I haven't used this one all that much yet, but it appears to be of very good quality and the R8 fit like a glove. This will be much more efficient than removing the draw bar for each tool change.4/22/20 Update: I've now put a lot of use on this set, and it is still performing great!I noticed a review saying that the "clamping nut was not machined correctly," but I think he may just not fully understand how to properly use the item; the hole in the ring is supposed to be off-center as shown in his picture. You have to clip the collet into this piece before you put an end mill into the collet. The ring is machined in such a way that it fits into the groove on the collet and pulls the collet out of the taper when you unthread it. You can't just set the collet in there and thread it together. Hope this helps.
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