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Different chuck key sizes.
Keyless chucks are engineered to quickly loosen and tighten a tool on the chuck collar of the drill either by manual.
A 10 mm shank with two open grooves held by the driving wedges and two closed grooves held by locking balls.
This measurement is called the pilot shank.
Since everyone has different needs let s run down the different grades of chucks.
2020 popular chuck key sizes trends in tools jewelry accessories with chuck key sizes and chuck key sizes.
I find an old round shoe lace tied to a key for the hand drill by the cord plug not only reminds you to unplug before changing bits.
This is the most common size and takes a hammer up to 4 kg.
The wedges grip an area of 75 mm 2 0 116 sq in and the shank is inserted 40 mm into the chuck.
Shop the top 25 most popular chuck key sizes at the best prices.
But what if you need to drill a hole whose diameter will be larger say 20 mm.
If you plan to use large bits then choose a larger chuck.
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.
Determining the proper replacement chuck key for your drill can be very frustrating.
The larger the size the bigger the shank.
Usually on the side of the drill chuck there will be some stamped numbers.
I tend to replace the bent coathanger type of key with a cross drilled type although i have broken teeth from the cheeper home store variety.
If you pull out your ruler you ll see that 1 8 isn t very big at all.
1 4 3 8 1 2 etc.
The chuck size looks something like.
Unless a real oddball most chuck keys will be listed by pilot size.
10 mm 3 8 inches and 13 mm 1 2 inch.
Keyed chucks offer the advantage of applying additional torque on the bit when slippage is a concern during heavy duty applications.
When it comes to drill chuck key holders grainger s got your back.
There are 2 major chuck sizes that most handheld drills have 3 8 or 1 2 if we crunch the numbers we can see that a 1 2 chuck is only 1 8 larger than a 3 8 chuck.