What do you have in mind? I need a spindle to spin a 6" cut-off disk to
trim End brushes.




"Jon Elson" wrote in message
...
I just picked up a Professional Instruments BlockHead 4R air bearing
spindle assembly. It has an integral motor, resolver, brake and shaft
encoder. It was used in a disk drive development lab, and currently has a
pneumatically activated clamp for a disk platter mounted on it.
But, looking at the company web site (still in business, the 4R is still
a current model) they use these for precision grinding and other tool
applications, too. It is rated for 10,000 RPM, and has a radial stiffness
of
0.67 Lbs/microinch. I don't know the details of the motor, whether it is
3-phase induction or PM brushless. It appears to be unused, as it still
has the factory shipping lock on the spindle.

This is a big unit, seems to weigh about 40 Lbs. Does anyone have
any use for such an item (before I list it on eBay)?

Jon