and 50-10 means:
50 = taper identification number
10 = internal taper--number 10 B and S
Screw Arbor
cutter adapters are designed to be used with tools that
have taper shanks and a cam locking feature. The
cam lock adapter code indicates the number of the
have threaded mounting holes. The threads may be
external taper, number of the internal taper (which is
left- or right-hand.
usually a standard milling machine spindle taper), and
the distance that the adapter extends from the spindle
Taper Adapter
of the machine. For example, 50-20-3 5/8 inches
means:
Taper adapters are used to hold and drive
taper-shanked tools, such as drills, drill chucks,
50 = taper identification number (external)
reamers, and end mills. You insert the tool into the
20 = taper identification number (internal)
tapered hole in the adapter. The code for a taper
3 5/8 = distance adapter extends from spindle is
adapter includes the number representing the standard
3 5/8 inches
milling machine spindle taper and the number and
series of the internal taper. For example, the taper
adapter code number 43M means:
Cutter Adapter
Cutter adapters, such as the one shown in figure
4 = taper identification number--40
7-53, are similar to taper adapters except they always
3M = internal taper--number 3 Morse
have straight, rather than tapered, holes. They are
used to hold straight shank drills, end mills, and so
forth. The cutting tool is secured in the adapter by a
If a letter is not included in the code number, the taper
setscrew. The code number indicates the number of
is understood to be a Brown and Sharpe. For
the taper and the diameter of the hole. For example,
example, 57 means:
50-5/8 means the adapter has a number 50 taper and a
5/8-inch-diameter hole.
5 = taper number--50
7 = internal taper--number 7 B and S
7-29