Rottler S85A - Cutting Speed Calculation; General Information

Section 3 Safety 3-14 S85A / S86A Manual
www.rottlermfg.com
General Information
Rottler CBN and PCD Inserts are laser marked with our part number on one side. On single sided inserts,
the part number is on the back side of the insert.
Rottler surfacing insert toolholders are designated IC (inscribed circle) which means they can hold square
and round inserts with the same IC, for example, a 3/8” IC round and 3/8” IC square insert will fit into the
standard 3/8” IC Rottler toolholders.
Rottler SF Series machines are supplied standard with Rottler 3/8” IC toolholders fitted to our surfacing
heads. Optional 1/2” tool holders are interchangeable with 3/8” toolholders.
Cutting Speed Calculation
Inserts are designed to cut within a speed range (S.F.P.M.). In order to convert from cutting speed to
RPM, use the following formula:
RPM = S.F.P.M. X 3.82
DIAMETER
S.F.P.M. = Surface Feet per Minute
RPM = Revolutions per Minute
DIAMETER in Inches
One Insert
Two Inserts Set within
.0015” - .0003
Two Inserts Set
within .0001”
RPM 1000
Feed Rate .002” Per Rev
12 rms
12 rms
10 rms
RPM 1000
Feed Rate .005” Per Rev
20 rms
20 rms
15 rms
RPM 1000
Feed Rate .010” Per Rev
30 rms
30 rms
25 rms
RPM 1000
Feed Rate .020” Per Rev
60 rms
60 rms
40 rms
RPM 1000
Feed Rate .030” Per Rev
90 rms
90 rms
60 rms