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Max TIR .0002" OD to ID
MT2 Shank ER32 Collet Holder
- Made of high-grade tool steel.
- Hardened and precision ground.
- Max RPM: 8,000 RPM.
- No wrench included
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High-Grade Tool Steel
42CrMo
Made of high-grade tool steel, 42CrMo
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"Off-Centric" Design
Feature of ER Collet Nut
The Eccentric Ring complies with ISO 15488:2003(E) and secures ER collets.
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Thread Size of Drawbar
3/8"-16
Features
Accusize 0223-0235 MT2 Shank ER32 Collet Holder
- For ER32 collets
- Made of high-grade tool steel.
- Hardened and precision ground.
- Max TIR 0.0002" O.D to I.D.
- Max RPM: 8,000 RPM.
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Diagram
Specifications
- Gage Length (L): 2.36"
- Collet Nut Diameter (D): 1.97"
- Drawbar End(d1) Thread: 3/8"-16
- Collet Capacity: 0.08"-0.787"
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Accuracy Inspection Cautions
- Clean All Parts: Dirt or improper installation affects precision.
- Check Spindle: Ensure your machine’s spindle is highly accurate.
- Use Quality Collets: Many marked 0.0005" don’t meet the spec.
- Overall Accuracy Depends: Low collet accuracy limits test results.
Attention: Eccentric Ring of the ER Collet Nut
Collet Nut's Eccentric Ring
The Eccentric Ring is designed per the requirements listed in ISO 15488:2003(E). It is to hold ER collets in place.
Assembly
- Tilt and insert the collet partway into the nut.
- Engage the ring into the collet's groove and press until fully seated.
Assembled
- Tighten the nut lightly with the collet holder.
- (Warning: never tighten the nut without a cutter in it as it will break)
Disassembly
- Take out the nut from the holder.
- Press the end of the ER collet until it disengages from its position.
- Push the collet out of the nut.
Auxiliary Tools and Replacement Parts
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Accusize 0223-0880 Precision ER32 Collet Set, inch
- 18pcs/set
- 3/32"-25/32"
- Strong storage case
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Accusize 3350-0585 Precision ER32 Collet Set, mm
- 18pcs/set
- 3-20mm by 1mm
- Strong storage case
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ER32 Collet Nut, Thread Tolerance Class: 4H
ER32 collet cap for CNC tool holder. Hardened alloy steel HRC 50-52, G2.5-20 000 RPM, TIR ≤ 0.0003 in.
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Wrench for ER32 Collet Nut
Consider Accusize ER32 Collet Holders for CNC Machines
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CAT40 to ER32 Premium Floating Tap Collet Holder
- For light-duty tapping tasks. TIR: 0.0004"
- All critical surfaces are precision-ground.
- Made from alloy steel, hardened to HRC 54-56.
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CAT40 to ER32, 2.76in, Collet Holder
- All ground body. Made from alloy steel hardened to HRC 52-56.
- Taper accurately ground exceeding AT3 standard.
- Balanced to 20,000 RPM at G2.5. TIR: 0.00012"
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CAT40 to ER32, 4in, Collet Holder
- All ground body. Made from alloy steel hardened to HRC 52-56.
- Taper accurately ground exceeding AT3 standard.
- Balanced to 20,000 RPM at G2.5. TIR: 0.00012"
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ISO40 to ER32 Collet Holder
- Thread 5/8'' to 11,
- 100 mm Long, 0536-0003
- TIR: 0.00012"
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CAT50 to ER32 4" Proj. Length CNC ER Collet Holder
- Constructed of alloy steel, hardened to HRC 52-56
- Through-spindle coolant capability.
- Collet seat taper TIR ≤ 0.0002"
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CAT50 to ER32 6" Projection Length Collet Holder
- Constructed of alloy steel, hardened to HRC 52-56
- Through-spindle coolant capability.
- Collet seat taper TIR ≤ 0.0002"
Accusize provides various ER CNC Tool Holders for CNC machines with spindles, including CAT40, CAT50, ISO40, BT40, etc.
Jeff S
Reviewed in the United States on February 3, 2025
Ok, first off, whenever I receive a new machine tool part, I run it through the sonic bath to remove any grease, machining crap, etc., and after cleaning this chuck - nothing! No metal shavings, the screens are clean.Secondly, this chuck is well machined, and the runout is 0.0002. In the video this is on top of the .0003 runout on the mill spindle. The threading is way beyond any specification requirements, they are the best. Just added it to the tool bin. It passes.As for the name, this one is marked "CanCNC." Some have made a big deal about this, but if you get a quality tool and it fills the need, so what! Use it and move on! I have purchased many tools from Accusize, and have not been let down yet.It has been mentioned that the hole is off center. It's supposed to be like that. Read the DIN ISO 15488 specifications. It's called a setting angle.This chuck is highly recommended!
Joshua fields
Reviewed in the United States on February 26, 2025
I see many complaints that the machining is inconsistent or off center. That’s not the cast they just don’t know or didn’t read the instructions how to use the tool. Please read the instructions and see how the collet properly is inserted into this holder.
Adam
Reviewed in the United States on February 25, 2025
This thing is awesome! It's a bit of a trick to get your collet to seat properly in the top cap, but once you figure out how to snap it in, its 100% spot on. I use it for turning bespoke pens, which require very, very tight tolerances and this thing gets it done on point.
Bill Long
Reviewed in the United States on February 25, 2025
nothing to dislike, I used this to convert a drill press to a mill
R. S. Winsor
Reviewed in the United States on January 28, 2025
One of my favorite milling machine purchases. This is very well finished, it holds the tool true and very secure. Runout appears excellent, as I'm getting very accurate milling with this - CNC grade tolerances. The threads are very high quality and the price is amazing.
Michael A.
Reviewed in the United States on January 21, 2025
Looks perfect works as expected. Meticulously machined all services are ground and there are no blemishes nicks dings scratches or burs. I returned several other brand R8 - ER25 collet chucks which were complete junk by comparison.
rjk
Reviewed in Canada on January 15, 2025
Very good quality; extremely accurate.
tony
Reviewed in Canada on August 3, 2024
Been using this for a while now. No problems.
Customer
Reviewed in the United States on February 2, 2024
Received R8-ER32 and noticed is NOT Accusize as advertised. It is an off brand I have never heard of "CanCNC". Appears to be deceptive advertising. The product does look nice. I will not know the quality until I use it and throw a dial indicator on it.
Dwayne Dosch
Reviewed in Canada on October 28, 2024
This tool stated clearly that the FNC thread was 1/2" - 13tpi. It is in fact 12mm x 1.75mm pitch. This required that I purchase suitable materials to fabricate a new draw bar. This req'd that I waste time finding a local supplier of bolts with that pitch and then driving down there to try it (across the city) just to confirm my strong suspicions (it's difficult to get a real good feel for the fit of the thread gauge when inserted into the MT shaft)The tool otherwise seems, otherwise, to be produced with good fit and finish and the one ER collet I tried was easy to install and remove.I have NOT yet used this in manufacturing due to that draw bar issue.The tool was received in a timely manner and well packed.
Gregory T Reid
Reviewed in the United States on March 14, 2023
The first thing I did was to check the runout. My PM-30MV mill spindle runout is barely measurable at 0.00008. The body OD of this R8 ER32 chuck shows 0.0001 when mounted, but the inside surface of the ER32 surface (where the collet will mount) shows 0.0003. So it just barely misses its advertised 0.0002 spec, even when allowing for my spindle 0.00008 addition. But it is PLENTY good enough for my hobby machinist needs.The machining is beautiful; fits perfectly into my mill, and the nut is smooth. Two small things to mention:- It is laser etched with "CanCNC", not "Accusize" as shown in the listing photo. Others have mentioned this. I'd expect that ordering from Accusize should truly be an Accusize brand. I'd hope that the manufacturer will comment on this.- The flats across the chuck's body are spaced at 41.90mm. Perhaps that's normal for a true Bridgeport mill. Mine is a Precision Mathhews mill and the flats on its spindle are 40.85mm. The PM supplied spindle C-wrench measure at 40.92mm, so it's a fairly snug fit. And so the wrench will NOT fit this Accusize chuck body. No big deal (I'll use my mill to knock a mm off of the body flats), but thought I'd mention it.
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