Replacement chuck for Makita cordless drill

[CV90]

Loaned my Makita BDF453RHE cordless drill to a coworker for a "small project". Finally got my drill back after nearly two months and just found out the chuck is busted. The retard managed to get some hard epoxy like stuff inside the chuck? Now it still works but the chuck action became very stiff. How can I remove the chuck and where can I get a replacement chuck? (preferably all metal construction, no plastic).

 

[jakemac]

IIRC, you need to open the jaws up so you can look down the throat. At the bottom of the jaws you should see a screw, it may be phillips or hex. Remove the screw (SAVE IT !).

Next, put a beater hex wrench in the jaws and tighten them. Strike the hex wrench (IDR if it's clockwise or counter) with a rubber mallet to break the thread lock. Now you can unscrew the chuck from the arbor.

Replacing is just the reverse. Don't forget use the hex wrench trick to set the threads before you replace the screw.


I did this 25yrs ago when I swapped my chucks from Keyed to Keyless. (back then cordless drills came with keyed chucks so you could loose the key on the job and be forced to spend more money)

 

[doan]

Lowes sells replacement Jacobs Chucks.

 

[shockwave]

They are pretty easy to change open the chuck all the way and loosen the retaining screw (it will be left hand thread thou) and the unscrew the chuck. I had the change mine on my cordless Makita now I am using a Jacobs chuck

By the way the retaining screw should be thru the center of the chuck but beware the retaining screw is reverse thread but not the chuck itself

 

[CV90]

So something like this will work?

 

[rancherbill]

Makita chucks are available from your local Makita repair facility. I live in Canada and they have 13 repair depots. My guess in 'Western Europe' they have repair depots. I would get the right one. The mentioned Jacobs might be SAE instead of metric.

The staff are super helpful.

 

[jakemac]

You need to determine the thread size and count in order to purchase the correct chuck, but otherwise, that is the type of chuck that you will need (if not the correct model #).

 

[N.I.]

I am not fond of that particular model of drill. It is Makita's cheapest version and has a non serviceable motor (which burns out easily).

Personally I don't think it is worth spending the money on it to buy a new chuck. I would try and free it up - its bound to free up with use? Otherwise flog it if you can't live with the stiff chuck.

 

[zkling]

It's most likely a 1/2"-20 threaded spindle. The chuck you linked too would probably be correct. I can't seem to find the parts diagram for the BDF453, I've found it for other BDF45_ models, but not the 3. The surrounding models all take a 1/2"-20 so it would make sense that yours does as well. Just an idea if you can't fix your current chuck.

https://www.makitauk.com/shop/parts/

 

[CV90]

I am not fond of that particular model of drill. It is Makita's cheapest version and has a non serviceable motor (which burns out easily).

Personally I don't think it is worth spending the money on it to buy a new chuck. I would try and free it up - its bound to free up with use? Otherwise flog it if you can't live with the stiff chuck.

I know it's a cheap model but it is light weight and good enough for drilling small holes in wood and driving smaller screws like 4x40. For the bigger stuff I use the BHP458RFJ.

I went to the local Makita distributor today and ordered a new chuck for about €35,- Problem solved!