High-Performance Rex Industrial Sewing Machine Servo Motor - 550 Watts Review

I have an old Singer 211W155 industrial sewing machine. Replacing the old National clutch motor with a Rex 550 servo motor has greatly improved the machine's performance at very low speeds. As stated by other customer reviews, an engine replacement is a must; Period. In fact, attaching it to the table wasn't difficult. The three centers of the mounting screws fit very well on the new mounting plate. I bought some new 5/16" bolts, extra fender washers (large diameter), and rubber washers from…

Smooth, quiet, controlled motor for my running foot. If you still don't like the speed, just install a smaller pulley like I did. I used a 1-3/4" pulley to further reduce speed and torque. The length of your belt will depend a lot on how the speed controller works. I started with a belt that was too short and the motor had to be cranked to its highest position Then the pedal rods weren't long enough to reach the right hand hole in the motor control lever (I like to use the hole farthest from…

As previously noted there are no installation instructions, it is just a motor on a bracket that bolts to the table. Unfortunately my desk and machine were old enough that I couldn't use the same screw holes as some lucky buyers here. However, it was not difficult to install the engine with screws and gearbox. The quick release spring clip allows the mount to be removed from the motor, making it easy to place the mount on the underside of the table and mark the drill bit. The carriage bolts are