What to know about 8.4" Vacuum motors Watch this video before you buy or install these motors!
You must use some kind of gasket 3/8" You must support the motors 3/16" off the surface of the box or shelf. The motors must be supported under and over the three tabs
You must have at least 1/4"(Drilled Hole in the bottom of your table or plumbing) leakage per motor for proper cooling of the lower bearing. This must be filtered air - possibly using a filter like a ShopVac uses to cover the all holes that you have drilled. This will give you plenty of filtered surface air. If you come up with a better idea please tell us so we can tell others. If you do not provide leakage air, you will destroy the motor and the warranty will not apply!
You must have at least 3/8"(Drilled Hole in the bottom of your table or plumbing) for the OD motors. This must be filtered air - possibly using a filter like a ShopVac uses to cover all the holes that you have drilled. We had a customer who was cutting full sheets and his muffler's 90 degree coupling was getting soft and not staying connected. The customer was using the OD motors. The motors only lasted 6 weeks - not good! We both learned together
If you want to read and see what the CNC'ers are doing with these motors go to:
