Mini Mill - Spindle Hours / HE option

Crazor · Nov 8, 2021

Hi everyone,

while looking for a (used) Mini Mill, I came across the Mini Mill HE (built 2007, pre-NGC). Can anybody tell me what the HE option means?

Also, the machine has ~6k spindle hours. What's the expected lifetime of a (well-maintained) spindle on the Mini Mill? Is it practical to replace spindle bearings and other wear items on this machine, or would I need a new spindle when it's past it's lifetime and does not pass inspection regarding tolerances?

Crazor · Nov 15, 2021

So the tech said that HE means that the spindle has no gearbox...

dallack · Nov 15, 2021

HE Is HAAS Europe

It's possible but not practical to replace spindle bearings. Usually the whole spindle is replaced.
As for spindle hours before replacement it all depends of how it has been run.

Crazor · Nov 15, 2021

Ha that's funny. The Haas sales guy did not know about HE, and the tech (who is apparantly an ex-Haas employee) apparantly does not know either

We looked at the machine last week and it looks like it only ever ran aluminum. Curious that they got only the 6k spindle then. But I could not for the life of me find any steel chips anywhere, and we actually removed the way covers etc.

The spindle sounds just fine in the entire RPM range tbh. It will be delivered to us on Wednesday, but the electrician will not be in until next week. We'll see how it goes when we make some chips in a week or two.

laminar-flow · Nov 28, 2021

You might want to refer to my post on the Haas greased spindle on a TM1.

Haas Spindle bearings, grease spindle TM1, upper pulley bearing

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Mini Mill - Spindle Hours / HE option

Crazor

Plastic

Crazor

Plastic

dallack

Aluminum

Crazor

Plastic

laminar-flow

Stainless

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