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> Tormach tts-JT1 (30101)
Tormach tts-JT1 (30101)
Used for mounting standard drill chucks. TTS Jacobs adaptors are available as JT1, JT33, JT2, and JT6. This covers most chucks from " to ", but variations exist.
Jacobs taper adaptors are used to mount Jacobs taper drill chucks. Occasionally novice operators will try using a drill chuck to hold an end mill or other side cutting tool. Such operations are dangerous, always educational, often expensive, and rarely repeated. Since a Jacobs taper is not designed to support lateral (side) loads, the vibration, in combination with side loads from a milling operation, will generally shake the drill chuck off the mount. The heavy mass of the free spinning chuck is certain to destroy the milling cutter, damage the work piece, and possibly damage the chuck itself. More importantly, it will shred any human flesh that happens to be in the way as it bounces violently around the workshop and dissipates its kinetic energy. Jacobs taper adaptors are for drill chucks and drill chucks are for tooling with axial forces only.
If you want to reuse a chuck that is mounted on a different taper adaptor, all you need is a long punch and a vise. Set the chuck on top of a vise with the taper adaptor pointing down. When the chuck jaws are fully open, the small circular part you will see in the center, down inside the chuck, is actually the end of the taper adaptor. Using a punch placed directly in the center, drive the punch with a good sharp hammer blow and the taper adaptor should drop free. Be prepared with a rag or something below the chuck in order to catch the taper adaptor. The ground surfaces of an adaptor are likely to be damaged if it is dropped onto a concrete floor.
Mounting a chuck on a taper adaptor is a simple matter of pushing the adaptor onto the chuck. It is important to remove any oil or grease on both the taper adaptor and the socket in the chuck before putting them together. A cotton swab and a little rubbing alcohol is all that is needed to degrease each end. Heating the chuck and/or cooling the taper adaptor before putting them together can provide a more secure connection. Do not go crazy with a blowtorch; a halogen desk lamp held over the chuck until it is quite warm is plenty of heat. The heating technique is not necessary, but it does help the connection resist vibration.
