New Haas Spindle

[JohnJW]

On Haas's website I notice the standard spindle for 40 taper machines is now a 30hp direct inline 8100rpm. Is the new spindle better than the old belt drive spindle?

How do the 8,100rpm, 10,000rpm, and the 12,000rpm inline spindles differ from each other? Bearing? tolerance? motor?

thanks,

John

[gizmo_454]

My understanding on this one is that they are basing the new inline spindles off of the SS machines. Better? Yes. No more belt and pulleys to wear out. Less heat since there is no belt rubbing on pulleys. Better surface finishes, again because the motor is coupled directly to the end of the spindle, there is no vibration from the cog belt running on the pulleys.

Overall, a good setup, (now that we got ours fixed, THANK YOU!). As far as how the 3 spindles differ, that is a good question. Maybe one of the techs on here will know.

Mike

[underthetire]

Any time you can get torque out of a spindle without a gear box or belts is going to finish better. I'm surprised it took haas as long as it did to get away from belts. Mori started integral spindles back in the 80s, okuma started integral spindles on lathes in the early 90s. Not that an integral is the same as a coupled motor, but still much better than belts IMO.