The best thing to do is measure the diameter of the pilot hole shank and match that diameter with the drill chuck size you have.
Drill chuck key sizes chart.
Such a small object can stop your project in its tracks when you can t change your bit.
It was pre rockwell delta drill press and was old even then so i don t know if the t 5 key i ve been using is the right key it s almost certainly not the originally key.
The dual head is reversible to handle 3 8 in.
The chuck key fits the most popular chuck sizes and the ratchet action provides fast easy adjustment of your drill chuck.
Determining the proper replacement chuck key for your drill can be very frustrating.
The drill size chart below contains all commonly used centre drill bit sizes.
Fits most popular chucks.
They are commonly used to drill lathe centres and spotting drills i e marking holes to guide twist drilling.
One of the more popular brands is jacobs and most manufacturers will list an equivalent number which can make determining a replacement key a bit easier.
If you lose the key.
Therefore you must find a place to store the key of the chuck.
These specialist drill bits are used for drilling centre holes at two different angles 60 degrees and 90 degrees.
Maybe the keyless drill chuck is more convenient but we are here to discuss the chuck with the key.
If your drill chuck key is not listed it is because we do not have a cross reference for every chuck manufactured.
This is the main problem.
Making sure you get the correct sized chuck avoids a second trip to the hardware store.
Use one universal chuck key for multiple drill chucks.
Nothing is more frustrating than losing the chuck key to your drill.
It is also convenient but the key tends to get lost.
Dual head 3 8 in.
Drill bits also called twist drills are available with straight or tapered shanks though the most common drill bits will have straight shanks.
It turns clockwise to close when a drill bit is inserted in the chuck and counterclockwise to loosen.
Fractional and metric sizes per.
The key fits into the key lock on the side of the drill chuck.
Post by pixman sat feb 05 2011 3 40 pm there s a listing of the various jacobs chuck keys in their website but of course it only references the pin size and the chuck model number to match them up.
Usually on the side of the drill chuck there will be some stamped numbers.
If you lost the chuck purchase a replacement.
Centre drill bit sizes.
So you should have deep knowledge about drill chuck sizes.
The round key has serrated teeth like a gear.
The drill press with the supreme chuck is originally from the shop where i worked from 78 to 99 when they went belly up i bought many of the tools.
