[Punisher_67]

Has anyone bought or converted a Taig headstock to ER32 Collet
I just sourced the parts and will post results below

Could have bought this but I think making one would be cheaper ,
I also want to integrate the factory 6 step pulley on to the conversion .

Taig ER32 Spindle Headstock - BB6Corp

ER32 Spindle - New C25 ER32 150L Straight Shank Collet Chuck 25mm Extension Toolholder CNC Mill | eBay.

Factory bearings are 40mm in dia I will have to line bore the head to 42mm to accommodate
the 25mm x 42mm bearings to fit spindle , the sky is the limit when getting bearings - these can
be as cheep as $3.00 all the way up to $150.00 for full ceramics .

6905 2RS AB Alternator Bearing 25x42x9 SEALED Ball Bearings 17244 | eBay

[Punisher_67]

The finished ptoduct and here are the pictures on how I approached this , I had to use the Taig bearing spacer as a adapter to fasten the headstock to the 4 axis to mill the new 42mm bearing slots . Run out on the finished head is 1.5/1000 over the span of 3.0 inches which I can live with .

[Punisher_67]

Total cost of me complete conversion was less than a $100.00 .

I have ordered another ER32 & ER25 collet chucks but with a shorter 100mm shaft and on a 20mm diameter shaft .The first crack at this I used a 150mm x 25mm chuck which I had to shorten by 50mm but you learn from your attemps . These new units will house a thicker bearing but with the same 42mm OD . Also two more bare headstocks from Nick Carter .

This is what the conversion will be used for - The ER16 takes a maximum of a 10mm shaft but the ER32 go all the way up to 22mm which gives me a little more elbow room on thicker shafted couplers .

https://www.youtube.com/watch?v=YTaiG_cs178

https://www.youtube.com/watch?v=zC57C04BCxM

[900steve]

Peter,
That looks really nice!
How are you retaining the ER adapter axially to the headstock? Are you using any preload on it?

-steve

[Punisher_67]

Peter,
That looks really nice!
How are you retaining the ER adapter axially to the headstock? Are you using any preload on it?

-steve

Hello Steve and thank you

No preload on this one as it has 4 bearings and they were a tight fit on the shaft , I cannot feel any lateral give so every thing is very tight but I have since
made another ER32 and ER25 headstock but with a smaller 20mm shaft and with a larger bearing in both. Fitment is not quite as tight so this allowed me
to place an rubber O-ring in between the rear pulley and bearing and preload set that way . Everything on these very tight with absolutely no measurable play .

Picture of The ER16 , ER25 , ER32 Taig heastocks + the first ER32 unit stil on lathe .

[900steve]

Very cool! Good to know. Have you used any of your conversions on the Taig mill?

[Punisher_67]

Not as of yet but I will be eventually fitting the ER25 headstock on the mill as to use a .500 inch high helix carbide - aluminum cutter bit .

[martik777]

Did you bore/drill out the C25-ER32-100L? Isn't the manufactured ID 14mm?