The Dremel model 395 (corded variable speed) broke last night while I was using it for fairly heavy work (cutting pipes). The chuck simply stopped turning, although the motor was running.
The problem turned out to be pretty simple - a sheared "flex coupling". This coupling is a softer synthetic material that joins the splined motor output shaft to the splined chuck drive shaft. See photo. Also as an aside, I finally had an opportunity to use that yellow handled torx bit driver in the background while dissassembling the tool... :mrgreen:
I called Dremel's Wisconsin number today and crossed my fingers that I'd be able to get what I needed - and was astounded with the customer service I got. The woman I spoke to knew exactly what I was talking about and exactly what I needed. Apparently this is a common failure point in model 395 series I & II. She also suggested a second piece that is also known to fail in older models.
Total $4.00 out of pocket, including shipping. Props to Dremel Customer Service!:thumb:
The problem turned out to be pretty simple - a sheared "flex coupling". This coupling is a softer synthetic material that joins the splined motor output shaft to the splined chuck drive shaft. See photo. Also as an aside, I finally had an opportunity to use that yellow handled torx bit driver in the background while dissassembling the tool... :mrgreen:
I called Dremel's Wisconsin number today and crossed my fingers that I'd be able to get what I needed - and was astounded with the customer service I got. The woman I spoke to knew exactly what I was talking about and exactly what I needed. Apparently this is a common failure point in model 395 series I & II. She also suggested a second piece that is also known to fail in older models.
Total $4.00 out of pocket, including shipping. Props to Dremel Customer Service!:thumb: