Accusize Industrial Tools6-1/2'' 5C Collet Chuck with Integral D1-6 Camlock Mounting, 7/8'' Stud, 0269-0016

If time is money to you I'd recommend a pass on this one.Not ready for prime time out of the box. Run out was close to .0045" as received. I was committed to a job so I put some work into it and it's functional now.I put the three jaw back on and turned a taper on a piece of stock to D1 specs. Setup the collet chuck between centers and indicated the back of the chuck. Back was not flat with considerable distortion about each of the cam lock features. High spot of about .0018". Blued it up and took light facing cuts until blue cleaned up about 95%. Remounted the collet chuck and run out was under .0001" on the ground 5C taper surface. Getting a slight amount of blue transfer on the D1 spindle taper now. Repeatability with collets has been under .0003" with several chuck changes. Chuck is functional at this point.

Before mounting the chuck to my gunsmith lathe I checked the spindle run-out which was almost zero. I mounted the D1-5 collet chuck and checked the run-out with two indicators. Both indicators showed the total run-out to be lest that 1/1,000 inch. I demounted the chuck. Cleaned it up and remounted it. I checked the run-out with third test indicator. The run-out was still less than 1/1,000 inch. Really impressive for an inexpensive chuck. Because this chuck has had very mixed reviews on Amazon I contacted Accusize prior to purchasing to ask some questions. They were very responsive, very nice and indicated that they would stand behind their product. Now...Is this chuck the same quality as a $615 Bison? Probably not. However for a home machinist such as myself it is plenty good enough at 1/2 the price of a Bison.

I wish it was possible to give a negative star review. All of the attachment bolts were included, but none of the attachment points had been fully tapped. In some instances, the bolt would not clear by more than .25". Terrible! I would not even run my lathe after the chuck was installed, in fear that it would fly apart. The main attachment bolts required a M14x1 tap, which is not a common tap. Terrible QA control. Do not buy this product.

I am a Tooling Engineer/Tool Maker by trade and have used lots of precision tooling. Have to say that this collet chuck is a beautifully made piece of craftsmanship that you can be proud of. Nicely ground surfaces and radii where needed. It came in a very nice wooden box, but unfortunately the box was virtually destroyed during shipping. The box did protect the collet chuck from any damage, and I used lots of glue and epoxy to fix it. I have seen this almost identical product sold by others for almost $1000, and those don't have the more sophisticated spring loaded chuck wrench that this one has. If you need a collet chuck, do yourself a favor and get this one.

I cleaned and indexed but was only able to achieve 0.002" TIR. My spindle nose is running out 0.0003" TIR. Dissapointed but chuck will accomplish the job I purchased it for.

I ordered this product in a D1-5 camlock configuration the first unit came in with .00075 runnout, not awful but not what i was looking for, on closer inspection the unit was not seating on the D1 taper at all so on reinstall it moved all over the place. They kindly replaced the unit and the second unit seated on the taper but had .006 runnout ?? it is a well bade unit but i suggest that if you have a D1 spindle order the plain back and a mounting plate so you can set it up as a true set as the above units have no ability to adjust.

Great little chuck, Installed it right away and put in a 3/4" 5C collet and 3/4" drill-rod and checked the runout it was a little out of spec. .0015 so I took off the chuck and cleaned the mounting surface and my D1-4 mount on the lathe again then put back together the runout was as advertised less than .0005". The service and shipping were great from Accusize and I would recommend them again... Thanks;

Missing screws to lock cams. Threads aren't great. Still trying to get the 0.005" runout out of it.