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View Full Version : Conversion of ER16 spindle to ER20



Tenson
14-07-2012, 04:38 PM
What is involved in converting my ER16 2.2KW spindle to an ER20 type?

...I didn't expect to use many 1/2 inch shaft bits at the time I bought it, and now I have one!

Alternatively, could someone reduce the shaft on the bit from 1/2" to 10mm? It's a large 45deg V Groove cutter.

Jonathan
14-07-2012, 04:54 PM
What is involved in converting my ER16 2.2KW spindle to an ER20 type?

It's basically not realistic. Since the ER20 taper is bigger than the ER16 you would have to get a new spindle shaft made, which is going to cost a huge amount.
Some sort of 10mm to 1/2" adapter would work, but you would have to be very careful on how big a cut you take with that as it wont be very strong unless supported by another bearing.

JAZZCNC
14-07-2012, 05:49 PM
Alternatively, could someone reduce the shaft on the bit from 1/2" to 10mm? It's a large 45deg V Groove cutter.

Not worth the trouble you can buy a good quality TCT V cutter with 1/4" shank for 23. It would cost at least half this to have some one do it then you have the wait etc.!

http://www.wealdentool.com/acatalog/Online_Catalogue_V_Groove_285.html

Tenson
14-07-2012, 06:19 PM
Thanks Jazz, I've ordered one. I couldn't find any with a significant depth of cut with a 1/4" shank.

...now I have an expensive 1/2" shank bit to get rid of!