This is an authentic Milwaukee part, sold individually. If your drill's bit retention is suffering, the rotation feels stiff, or the chuck has seized up entirely, a new chuck should fix the problem. The chuck is the top portion of the drill that holds the different drill bits. It is compatible with the hammer drills listed below. In order to install this chuck you will need to thread the chuck assembly onto the spindle then secure the chuck assembly as tightly as possible (by hand). Then open the chuck to accept the retaining screw and install the retaining screw. Secure the screw with a Phillips screwdriver. The screw is reverse threaded requiring counter clockwise rotation to secure.
Troubleshooting
This part works with the following brands:
Milwaukee
This part works with the following products:
Cordless Drill
Hammer Drill
Videos For installing this part.
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Average Rating (out of 5):
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★★★★★
★★★★★
1/2” Milwaukee drill chuck
New Milwaukee part. Just as advertised. Transaction was easy, price was right and shipping time was good. Thank you.
Guest - March 2, 2020
Verified Purchase
★★★★★
★★★★★
It was easy to find parts and fast to get them everything fit perfect thanks
Thanks again great service parts fit perfect
Robbe - May 19, 2022
Verified Purchase
Questions & Answers
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I removed the LH chuck screw from the chuck. I was able to close the chuck tight enough on the short end of an allen wrench. I then put the chuck in drill mode and in low gear and laid it on the work bench. I then hit the allen wrench with a hammer a few times and finally the chuck was loose. I removed the the old chuck from the spindle a
... Read morend put the new chuck on as tight as I could with my hands. Then I screwed in the chuck screw and I was done.
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Chuck would only tighten half way. But was about 5 years old with lots of use.
The teeth inside stopped moving . I was able to get to the inner screw easily because everything was locked open. Once out I did have to use a pipe wrench on the outer collar . Carfully losened that and the entire chuck removed from the drill. I reffered to a you tube video for this process just improvised with the pipe wrench because o
... Read moref my case of damage
I actually followed a youtube video on the repair, and it was very concise.
I had to use a torx drive to remove the center screw ( LH THREAD) that was securing the chuck to the drill. Once I removed it, I then used a very large allen key, tighten it onto the chuck and hit the allen key to loosen the chuck from the drill. I unscrewed
... Read more the chuck, replaced it with the new one, tighten it as much as I could, then secured it again with the torx screw...
Took me all of 15 minutes
1. Removed the screw inside the chuck, it is reverse threaded so it loosens to the right.
2. Tightened a large Allen wrench in the chuck.
3. Placed the drill on a table and used a hammer to sharply it wrench several times until it loosened.
4. Revered the steps to install the new chuck.
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Chuck on 1/2 inch Milwaukee cordless drill had broken, would not hold a bit securely.
Removed the original retaining screw. Unscrewed the old chuck. Screwed on the new chuck. Installed the new retaining screw. Job done. I suggest you buy a new retaining screw when you purchase the drill chuck.
1> open chuck completely
2> removed chuck retaining screw with a # 2 Phillips
3> Placed large allen wrench in chuck and tightened the chuck.
4> held drill and struck allen wrench with rubber hammer, took 3 blows to loosen it.
5> finished removing old chuck by hand and placed new one on and hand tightened.
6>
... Read morereplaced retaining screw and tested, back to like new.
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Model Cross Reference
This part works with the following models:
ERP Number: ERP10129275
Manufacturer Part Number: 42-66-0785
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
_WW_1.gif "Part Location Diagram of 42-66-0785 Milwaukee Chuck (1/2-inch)")
_WW_1.gif "Part Location Diagram of 42-66-0785 Milwaukee Chuck (1/2-inch)")
