Hi All,

Just wondering if anyone knows what the axial stiffness of a bridgeport
or clone spindle is?

I've seen some 40 taper spindles listed in the 500,000lbs/in for two
bearings at the tool end, ranging up to 900,000 lbs/in for a 3 bearing
(at the tool end) unit. I'm sure big mills go way higher.

My BP clone's manual doesn't specify spindle stiffness and that has made
me curious.

TIA,

Cheers, Peter