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Introduction |
| The chuck on a drill is often the first part to wear out or break. Luckily, replacing it is a fairly easy process that does not normally require disassembly of the drill. | | | Even if the spindle or gearbox of your drill needs replacing - which does require disassembly - it's best to remove the chuck before disassembling the housing. | | This guide should help you to replace the chuck on almost any corded or cordless drill, as drill chucks are almost always attached to the spindle by a screw thread. By far the most common thread size is 1/2" x20tpix 20tpi UNF, but smaller drills can have a 3/8" or even smaller thread. | | | In some rare cases such as angle drills, very old models or large machines, the chuck may be mounted on a tapered shank or it may even have a proprietary fitting requiring disassembly of the housing. In those cases, this guide is not applicable. When in doubt, refer to the technical documentation for your make and model. |
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