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Heavy Duty Design
The CAT 40 milling chuck is made of 40Cr for long, durable service life.
High Accuracy
CAT40 collet chuck accuracy in tenth 0.0001". Gage Length: 2.75" (70mm). 2.75" Gage Length
The CAT 40 tool holder set's gage or projection length of ER32 is 2.75" (70mm).
High Speed
High performance and stability.
Effortless To Operate
Fully ground flange and V-groove design, easy on tool changers for less spindle and changer maintenance.
Wide Application
CAT 40 face mill holder are suitable for CNC Lathe/milling, drill press, and heavy duty hand tools.
Specifications
Material: 40Cr
Gage Length: 2.75" (70mm)
Accuracy in Tenth, 0.0001-0.0002" max
Package Content
5 x ER32-70 Chuck
Customer
Reviewed in Canada on January 27, 2025
work great
CNC Builder
Reviewed in the United States on September 29, 2023
What's not to like at $18 each for a great toolholder. Keep producing these so American manufacturers can tool up and compete with cheap Chinese labor.
Eric Dumais
Reviewed in Canada on July 20, 2023
Très bon produit pour le prix
Windscreen
Reviewed in the United States on January 27, 2021
For the price, these holders are probably OK. If you're looking for super high accuracy, be prepared to measure and sort the 5 holders you are getting.The good-the pull stud threads were all good on the ones I got. Running a tap in them all didn't make a single chip-the pull stud threads were the correct 5/8-11 thread, not the 5/8-18 as reported elsewhere-hardness checked out around HRC 50The bad-of the 5, I measured TIR of 0.0002, 0.0002, 0.0003, 0.0003, and 0.0005". The ones at 2 and 3 tenths are usable. 5 tenths is probably going in the scrap bin. The seller's claim is 0.0002" max.-OD grinding is a bit rough. My first 2 got stuck in the spindle. After that I hit them by hand with some silver, ultra-fine scotch-brite, and they stopped sticking. ID (the collet side) looks like the same story.-they are definitely not balanced. There isn't a balance hole drilling to be seen, and on one holder I could visibly see the back-up screw hole was off center. On a low spindle speed machine like mine, this shouldn't be a problem, though.
John MacKinnon
Reviewed in Canada on July 20, 2020
Thanks very much!!
Tim
Reviewed in the United States on April 18, 2018
Run true to +/- .0001. No vibration at 6000 rpm's (max speed on my Haas)
Carrie Bolin
Reviewed in the United States on May 3, 2017
Work great in my CNC mills - 2012 Haas VF-2 and 1994 Fadal 4020HT.
Dean b Krotts
Reviewed in the United States on October 3, 2017
For entry level cat 40 holders - these perform very well. I only use them up to 7500 rpm (max speed on my fadal) Good quality.
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