DanielBauen.com
Cordless Industrial Sewing Machine
This is a work in progress of converting a Juki LU-563 Sewing machine head to run off a cordless drill motor. I don’t have space for a dedicated table, so I wanted the sewing machine to be portable, even if it does weigh 90+ lbs.
The v-belt pulley of the Juki LU-563 industrial walking foot sewing machine is 3/8in wide by 3/8in deep.
I had to find a drive pulley that would fit on a shaft held by the drill chuck.
| Form | Belts |
| Type | V-Belts |
| V-Belt Type | Standard |
| V-Belt Section | 3L |
| Top Width | 3/8″ |
| Height | 7/32″ |
Part Number: 6245K412 $3.96 Each
| Pulley Type | Drive Pulleys |
| For Belt Type | V-Belt Pulleys |
| Pulley Design | Solid |
| Number of Grooves | 1 |
| System of Measurement | Inch |
| V-Belt Section and End Dimensions (Top Width x Height) | 3L Section – 3/8″ x 7/32″ |
| Outside Diameter | 1″ |
| Bore Type | Finished Bore |
| Finished Bore Pulley Style | Standard |
| Bore Size (ID) | 3/8″ |
| X-Dimension | 1/2″ |
| Y-Dimension | 7/8″ |
| V-Dimension (Pitch Dia.) | 29/32″ |
| Pulley Material | Zinc Die Cast |
| Specifications Met | Not Rated |
| Note | Includes a set screw. Does not include a keyway. |
Not knowing exactly how long I would need the drive belt to be, I purchased the type of belt made up of short links that are connected together. The belt was surprisingly stiff when it arrived. I hope that it becomes less rigid with use, because it barely wraps around the 1in diameter motor pulley. The motor pulley has a 3/8in shaft, which fit perfectly on an old milling bit. The milling bit has a flat which is perfect for the setscrew. The business end of the milling bit is chucked into the drill.
A major issue is the backdrivability of the drill, or the lack thereof. Once the belt is tight, the sewing machine can no longer be turned by hand. A method to decouple power transmission from the sewing machine would be sweet.
Model of portable box:
