Surface Feet per Minute

=

RPM x .262 x Tool Diameter

RPM

=

Surface Feet Per Minute x 3.82
Tool Diameter

Feed Rate (in/min.)

=

RPM x Chip Load per Tooth x No. of Flutes

Chip Load Per Tooth

=

                 in./min.             
RPM x Number of Flutes

in ³ /min

=

Width x Depth x Inches per Minute

Required Horsepower

=

         in.³/min.         
Powerfactor

Horsepower

=

1.341 x kW

Surface Meters per Minute

=

RPM x .00314 x Tool Diameter

RPM

=

Surface Meters Per Minute x 318.057
Tool Diameter

Feed Rate (mm/min.)

=

RPM x mm per Tooth x No. of Teeth

Chip Load Per Tooth

=

                 mm/min.            
RPM x Number of Teeth

cm ³ /min

=

Width(mm) x Depth(mm) x mm/min
1000

Required Horsepower

=

         cm³/min.         
16.3871 x Powerfactor

kW

=

.7457 x Horsepower