Different Chuck Key Sizes

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Different chuck key sizes.

Generally a chuck does not have a wide range of sizes but only two. This measurement is called the pilot shank. Keyless chucks are engineered to quickly loosen and tighten a tool on the chuck collar of the drill either by manual. Usually on the side of the drill chuck there will be some stamped numbers.

Step 2 measure the diameter of the hole on the side of the chuck in inches with a ruler. When it comes to drill chuck key holders grainger s got your back. Determining the proper replacement chuck key for your drill can be very frustrating. If you pull out your ruler you ll see that 1 8 isn t very big at all.

If you plan to use large bits then choose a larger chuck. This is the most common size and takes a hammer up to 4 kg. But what if you need to drill a hole whose diameter will be larger say 20 mm. 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.

The chuck size looks something like. Unless a real oddball most chuck keys will be listed by pilot size. A 10 mm shank with two open grooves held by the driving wedges and two closed grooves held by locking balls. 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.

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. Keyed chucks are engineered to either loosen or tighten the hold on a tool by using a key. 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. 1 4 3 8 1 2 etc.

2020 popular chuck key sizes trends in tools jewelry accessories with chuck key sizes and chuck key sizes. Keyed chucks offer the advantage of applying additional torque on the bit when slippage is a concern during heavy duty applications. Shop the top 25 most popular chuck key sizes at the best prices. 10 mm 3 8 inches and 13 mm 1 2 inch.