Morse taper

[cryptogram]

I'm intrigued to know how the machine tool taper rules work. I have a drillwhose chuck is a taper fit on the spindle. It appears to me that the spindle is a Morse taper 1 (I may be wrong). If it is indeed this size, I assumed that the chuck (with a female taper hole) would also be a Morse taper 1. But the manufacturers are calling it a B12. In fact, when I told them it was a Morse 1 it threw them until I sent a photo. So my question is, what is the difference between a Morse taper and a B taper (in principle, I mean, not in actual size, because I know there are several different sizes). Surely the male and female would be the same fit, would they not?

 

[shazzbat]

I'm intrigued to know how the machine tool taper rules work. I have a drill
whose chuck is a taper fit on the spindle. It appears to me that the spindle
is a Morse taper 1 (I may be wrong). If it is indeed this size, I assumed
that the chuck (with a female taper hole) would also be a Morse taper 1. But
the manufacturers are calling it a B12. In fact, when I told them it was a
Morse 1 it threw them until I sent a photo. So my question is, what is the
difference between a Morse taper and a B taper (in principle, I mean, not in
actual size, because I know there are several different sizes). Surely the
male and female would be the same fit, would they not?

This should help -

http://www.jacobschuck.com/pdf/Technical-Information.pdf

According to page 3, a B10 taper corresponds to the small end of a MT1, and
B12 to the large end. So it would appear that the angles are the same.

Steve

 

[cryptogram]

in message


I'm intrigued to know how the machine tool taper rules work. I have a drill

whose chuck is a taper fit on the spindle. It appears to me that the spindle

is a Morse taper 1 (I may be wrong). If it is indeed this size, I assumed

that the chuck (with a female taper hole) would also be a Morse taper 1. But

the manufacturers are calling it a B12. In fact, when I told them it was a

Morse 1 it threw them until I sent a photo. So my question is, what is the

difference between a Morse taper and a B taper (in principle, I mean, not in

actual size, because I know there are several different sizes). Surely the

male and female would be the same fit, would they not?



This should help -



http://www.jacobschuck.com/pdf/Technical-Information.pdf



According to page 3, a B10 taper corresponds to the small end of a MT1, and

B12 to the large end. So it would appear that the angles are the same.



Steve

Thanks Steve