What is a Pin Chuck?
What is a pin chuck? |
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A pin chuck is a tool used to hold very small diameter drill bits or similar materials that cannot be held by a normal drill chuck. | |||
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Normal drill chucks hold bits that have a shank diameter of between 10 – 13mm (⅜” – ½”), whereas pin chucks can hold bits ranging from 0mm – 2.5mm (0″ – ⅛”) in diameter. | |||
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Different-sized collets are inserted into the pin chuck, and vary in diameter to hold small drill bits. | |||
What is a collet? |
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A collet is a circular device with jaws that forms a collar around an object. The collet is then tightened to hold the bit securely in place. | |||
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A collet is needed in a pin chuck to allow it to hold a number of different-sized tool bits.
Also, the collet encompasses the whole bit giving a more secure and stable bit compared with a 3-jaw drill chuck which only grips at 3 points. |
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Woodworking pin chucks |
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There are two products currently on the market called pin chucks. It is important not to get the two confused. | |||
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The other type of pin chuck is mainly used in woodworking. This chuck is a steel rod with a flat cut-out. A pin is placed on this flat and the whole assembly is inserted into a pre-drilled hole in the workpiece, twisted and locked into place. | |||
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The end of the pin chuck is then held in a collet or drill-type chuck to hold the piece of wood in a wood-turning lathe. | |||
