Regarding the new Redline spindles, what (if any) would the advantage be of the 80mm 1.5kw over the 65mm? I would need to replace my 65mm slider and really good dust boot which would be about $250 and am trying to determine if that is needed. Thanks.
Bigger is always better. Did the 80mm and will never look back.
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The bigger spindle also allows for a larger collet which will accept larger bits.
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The 80mm spindle can accept a 1/2 shank bit - the 65mm can not. That was what sold me when I placed my order in November.
Also, I read on another website that being bigger and heavier, the 80mm has better cooling than the 65mm. I don’t know if this is true but it sounded reasonable.
Mike
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Bigger bits mainly applies to going to the larger 2.2kw spindle and the ER20 collet. If you have no need to use 1/2" shank bits or the extra power then a 65mm 1.5kw spindle would most likely work fine. Going as big as possible is a good way to future proof your setup.
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Future upgradability. I got a 65mm spindle and now I need to completely replace my z slider to get the 80mm. Should have sucked it up 2 years ago and got the 80mm so the upgrade path to 2.2kw would have been easier.
That said, 1.5kw @ 65mm is perfectly fine for most light weight applications.
-Tom
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