How to attach a drill chuck to a thin electric motor shaft using a bolt

When making a homemade drill press, router or CNC router, you may need to directly install the chuck onto the thin shaft of a 775 series motor. For this you need a special adapter. It is made from a regular bolt.

What you will need:

• 3/8 or 1/2 inch bolt;
• electric motor 775 -
• drill chuck - http://alii.pub/5s5m9g
• M3 screws.

The process of making an adapter from a thin shaft to a drill chuck

The first step is to select a bolt with the same thread as is used on the spindle of the drill or screwdriver for which the chuck is intended.

Then we measure the diameter of the motor shaft. In this case, for the 775 motor it is 5 mm. The bolt is installed in a lathe and drilled lengthwise with a 5 mm drill.

Also, its head must be checked crosswise and an M3 thread cut into the hole.

If necessary, the excess length of the bolt can be cut off with a grinder.

Then the bolt is wrapped in a cartridge so that it cannot be unscrewed without permission.

The resulting adapter is put on the motor shaft, and then pressed with screws screwed into the head. It should rest against the groove of the shaft.

That's it, the cartridge is connected.

Watch the video