Earl Diamond Super Heavy Duty 1/2" Drill Chuck with Chuck Key and MT2 Shank | Morse Taper Arbor #2 (B16)

The stock chuck in my Porter Cable PCB660DP was never that great to begin with (runout) and over the years started clamping unevenly. I worked around it by unclamping/reclamping the bit and it was good enough for woodworking. Lately I've gotten into metal working and need a DP with mill-like accuracy. A relatively cheap, big-box store drill press isn't a mill and has a lot more driveline slop.Bought this chuck and arbor combo based on the reviews, to just replace the entire stock assembly and it was a good gamble. Arbor comes packed in it's own hard plastic sleeve and the chuck well-greased up in a plastic bag. Quality of both is very good. Surfaces are clean, smooth and free of tooling marks. The chuck is a little stiff to open/close, but it will loosen up with use.Overall, I think this is a great value.

Works perfect on my lathe tail stock. Good quality for the price.

Made well enough for a hobbyist machinist such as myself, especially for the cost.

This chuck looks good and seems to work well but I have not had a chance to use it enough to say how durable it will be.

I bought the 1/2" chuck with R8 shank to use on a Bridgeport mill. I'm using this in a low use application, not a production shop. It smoothly opens and closes across the range. I didn't notice any issues seating the tapered shank. I degreased the mating chuck taper and shank taper. I then deburred both tapers with fine stones (this probably wasn't necessary). I warmed up the chuck in the oven and put the shank in the freezer. I put the two together and quickly gave it a whack with a lead hammer. I drilled some 1/4" holes in aluminum and cold rolled steel so far. I spot drilled first with a collet and then drilled with the chuck. The old mill held under 0.002" on size, and location between holes. No complaints so far. I'll update this review if something comes up. So far I'm happy I took a chance on this affordable option.

Works well on my Jet lathe 1224.

Pretty good runout for the price.

Nicely made, but even though it is an MT2 Morse taper it's a little too long for the JET 1015vs mini lathe. Drill bit had a lot of wobble. Similar item that is half the price by wn works much better for my machine.