[Konstrukter1]

Hello,

I wonder regarding retention knob (7mm thru hole); Would be a good thing to close that hole with some plug in order to save spindle from some coolant and other stuff that could get thru tool?

Its Meusburger plug with VITON O-ring (Removable).
Attachment 308058

Best regards
Franc

[rbjem]

I wouldnt bother. If you really are worried about stuff getting in the spindle, switch to a solid pull stud.

[Konstrukter1]

I notice, that when i mill for a long time (1h or 2), there is some influence of mist of coolant on taper. On two occasion tool stuck inside. So i bought 20 Pcs of meusburger studs and fix them in to the retention knob. So far so good.

[rbjem]

Are you sure the tool getting stuck due to coolant mist getting inside?

I always figyred that happened due to the spindle taper heating, expanding, then sucking the holder up deeper. Once it cools down a little the holder will be i there TIGHT.

Sent from my SPH-L720T using Tapatalk

[Konstrukter1]

Yes, you are right. I was to happy with my solution (so I find some more good points of it...) .


Best regards,
franc

[rodney247]

Also if your tools are getting stuck the airline feeding the tool in and out is a 1/4 air line. Fadal found that increasing the air line to a 3/8 air line greatly greatly improved the tool in and out. Even better was moving the air valve closer to the tool in and out piston and the 3/8 line. The reason is that when using the 1/4 line the time to fill the tool in and out piston was too slow and the tool that got worked into the spindle taper in the hour or so of run time would get stuck.