ballen
Diamond
- Joined
- Sep 25, 2011
- Location
- Garbsen, Germany
I recently got a collet set and holder which fit my 1964 FP2
mill. The collet holder is made by Schaublin and carries part
number 161-339. From what I can find in the internet, the
collets appear to be a type called E25 (NOT ER25). The ones I
have have a lot of slits and cover the sizes 2-2.5mm, 2.5-3mm,
3-4mm, 4-5mm, ..., 19-20mm. There is also one collet which has
just three slits and is for a 10mm shaft, not for a range of
sizes.
I have a few questions about these.
(1) Do these E25 collets have advantages or disadvantages (extraction?) compared with ER25 collets?
(2) The SK40 taper on the holder had some dings and burrs that I
filed off. Since the taper on my spindle is in good shape, is it
a bad idea for me to use a less-than-perfect tool inside the
spindle taper, because it will mess it up? (I tend to think that
if I have removed the high points from the tool, it should not do
any damage to the taper, but I would like to know if others think
otherwise.)
Cheers,
Bruce
mill. The collet holder is made by Schaublin and carries part
number 161-339. From what I can find in the internet, the
collets appear to be a type called E25 (NOT ER25). The ones I
have have a lot of slits and cover the sizes 2-2.5mm, 2.5-3mm,
3-4mm, 4-5mm, ..., 19-20mm. There is also one collet which has
just three slits and is for a 10mm shaft, not for a range of
sizes.
I have a few questions about these.
(1) Do these E25 collets have advantages or disadvantages (extraction?) compared with ER25 collets?
(2) The SK40 taper on the holder had some dings and burrs that I
filed off. Since the taper on my spindle is in good shape, is it
a bad idea for me to use a less-than-perfect tool inside the
spindle taper, because it will mess it up? (I tend to think that
if I have removed the high points from the tool, it should not do
any damage to the taper, but I would like to know if others think
otherwise.)
Cheers,
Bruce