If your cutting needs demand a maximum speed higher than Sherline's standard 2800 RPM, this pulley conversion may be just what you need. In just a few minutes you can remove the stock pulleys and replace them with a ratio that will allow the standard motor and drive belt to turn the spindle at up to 10,000 RPM. No modifications and not special tools are required. A second pulley position is also included that allows you to drop the maximum speed back to 2200 RPM for more power when doing standard machining jobs.
The high speed pulley set will be welcomed by those doing engraving with small diameter tools or those turning very small watch shafts. If fits any Sherline headstock utilizing the DC motor supplied since 1993. (Not designed for use on older AC/DC motors identified by the smaller speed control housing.)
Download PDF 4335 Instructions