Originally Posted by
viper6383
Right now the motor turns at about 4800rpm with a final spindle speed of 4k rpm. We want to bump to a 5HP spindle motor and get to a final spindle speed of 8-10K. OUr spindle is an Erickson QC 30 taper with dual taper bearings at the head and three ball types up top. All are sealed grease. We are looking for a cheap 5HP 184TC frame, 4pole probably.
Wether or not the spindle can take it, I would say you are pushing the limit right now with a standard induction motor at almost 5k. Especially if you are looking at a cheap one.
If the spindle itself can take it, I would look at using a larger HP standard motor and gear up. 3:1.
At 10K the motor bearing and motor balancing are super critical.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.