Section 3 Safety 3-13 S85A / S86A Manual
www.rottlermfg.com
501-29-6E R2
This is a 3/8” IC square carbide insert with a purple ceramic coating. This carbide insert is normally used
for high speed boring. It works well as an economical insert for rough surfacing or heavy stock removal of
cast iron. A CBN insert should be used for the final finish cut.
6301J
A square 3/8” IC, 1/16” Radius, double sided, CBN Insert. The 1/16” radius of this insert will produce a
more accurate (flatter) finish than a round insert typically used for surfacing. This insert is often used on
F80-Series machines when surfacing large diesel blocks which are high in nickel. The square surfacing
insert is intended for F80 applications where it may encounter heavier cuts and greater interrupted cuts.
When using an 18” cutter speeds range from 600-800 RPM, and with a 14” cutter speeds range from
9001200 RPM.
6303P
A round 1/2” IC, single sided, PCD Insert. For use on aluminum only - heads and blocks without liners.
This insert has a thin layer of PCD applied to the top of a carbide disk. The diamond appears to be a
shiny black wafer. The hardness of the diamond resists the abrasive nature of the silica in aluminum
heads and blocks. RPM speeds with a 14” cutter range from 1000-2000 RPM. This insert gives the
maximum productivity when cutting aluminum. Requires the purchase of 1/2” negative rake tool holders.
The standard Rottler 3/8” IC tool holders will not hold this insert.
6303Q
A round 1/2” IC double sided, CBN Insert. An excellent insert for machining cast iron heads and blocks.
Round shape gives many cutting edges on each side of insert. Requires the purchase of 1/2” negative
rake tool holders. The standard Rottler 3/8” IC tool holders will not hold this insert.
One Insert vs. Two Inserts
Rottler SF machines can be rum effectively with either one or two inserts installed in the cutterhead.
Note: Never remove one tool holder that holds the insert and run the machine with one insert.
This will create an out of balance situation.
If two inserts are installed and aligned within .0001 of an inch the feed rate can be run 2 times faster than
if using only one insert.
The depth of the grooves made by the inserts for a typical finish is approximately .0003. Therefore for
a second insert to be of any advantage in obtaining a smoother finish for a given feed rate or a similar
finish at a higher feed rate the inserts must be aligned within .0003. Aligning them within .0001 will give
you a significantly smoother finish than aligning them within .0002. Therefore for maximum quality and
consistency Rottler recommends aligning the inserts within .0001 in a vertical plane, alignment of the
horizontal plane within .002 is sufficient.
If aligning the inserts within .0001 is too time consuming we recommend mis-aligning them between
.0003 and .0015. With the inserts mis-aligned you will get the same finish for a set RPM and feed rate
that you would using one insert. The benefit on using two inserts is for stock removal. Since the one mis-
aligned insert is removing some material the depth of cut can be increased up to .010 and acceptable tool
life obtained.
If one insert is used (50 percent of our customers use one insert) you do not have to worry about
alignment. It makes it very easy to change from CBN to coated carbide inserts. The following data
assumes you are using a 3/8” diameter insert, either CBN or coated carbide.
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