Thread: WTB Bridgeport style head with 40 taper

I don't really care what make it is as long as it will bolt on to my bridgeport clone. If you have one please email me at

sbaer@robustmachine.com

The heads with the 40 taper spindle will not fit a BP style clone the ones with a 30 taper will. The 40 taper heads are 5 hp and fit a larger pattern mill. BP made a 30 taper series 1 size mill they are not very common but a 30 taper spindle can be installed in a standard head.

Thanks

That is unfortunate news.

stan

That may be true of real BP's but the import clones could be had with 40 taper spindle same chassis as R8 machine
Bob

I'd be pretty skeptical of a 40 taper on the same chassis as a R8 machine. The only way to do it is to extend the taper further beyond the bearings. With the added bulk of the larger 40 taper holder, I expect the contact point of a standard endmill will be a couple of inches farther away from the spindle bearings. This makes a good recipe for chatter and deflection.

I've seen #30 taper, but not 40. What brand has 40?

The reason I want one is so that I can have repeatable tool changes on my Milltronics CNC bedmill.

Stan

In that case, consider using R8 endmill holders, or a quick change adapter. I've even put split collars on endmill shanks and used them in R8 collets. The last requires care to get repeatability.