CNC, Speeds & Feeds calculators & charts
Spindle speeds, radial chip thinning, scallop height, peck cycles, constant surface speed, material removal rate and spindle power, boring-bar deflection, knurling, Fanuc macro variables and coolant concentration. These are the numbers between the cutter catalogue and the program: enter the tool and the material, and each calculator returns the RPM, feed or step-over together with the equation it used, ready to type into the control.
All 11 CNC, Speeds & Feeds tools
Ball Nose End Mill Scallop Height & Stepover Calculator (3D CNC)Interactive 3D CNC ball nose end mill scallop cusp height and radial stepover calculator.Open Boring Bar Deflection CalculatorCalculate cantilever boring bar radial tip deflection, area moment of inertia, bore taper error, and maximum chatter-free L/D overhang ratio.Open Bull-Nose (Corner Radius) End Mill Effective Diameter & Scallop CalculatorCalculate bull-nose end mill effective cutting diameter, flat floor wiper width, compensated spindle RPM, and 3D cusp height.Open CNC Coolant Refractometer Brix Concentration & Sump Top-Up CalculatorCalculate true CNC cutting fluid concentration from optical refractometer Brix and exact gallons/liters of neat concentrate and water needed for sump top-up.Open CNC Lathe G96 Constant Surface Speed (CSS) & G50 Spindle Clamp CalculatorCalculate CNC lathe G96 Constant Surface Speed spindle RPM across diameters, critical G50/G92 clamp diameter, facing cycle time, and Fanuc/Haas G-code.Open CNC Milling Material Removal Rate (MRR) & Spindle Horsepower CalculatorCalculate CNC milling Material Removal Rate, Kienzle specific cutting force, net/gross spindle horsepower, and spindle torque.Open CNC Peck Drilling Cycle CalculatorCalculate optimal peck drilling depth, variable peck reduction, feed rate, and ready-to-run Fanuc/Haas G83 deep-hole vs G73 chip-break G-code.Open Drill Press RPM ChartDrill press RPM chart and cutting speed guide.Open Fanuc Custom Macro B System Variables ChartMaster Fanuc 0i/31i & Haas NGC Custom Macro B chart: #1–#33 G65 arguments, #100/#500 variables, #5221–#5324 G54–G59 work offsets, #10001 tool offsets, and #3000 alarms.Open Lathe Knurling Blank Diameter & Pitch CalculatorCalculate lathe knurling blank diameter and exact tooth-tracking circumference under DIN 82.Open Radial Chip Thinning CalculatorCalculate exact Radial Chip Thinning Factor, Axial Lead Angle Chip Thinning, and compensated CNC milling feed rates for High-Efficiency Milling.Open
Other drawers
Every result on these pages comes with its formula and the standard behind it. How the numbers are computed and checked is described in the calculation methodology.