RobbJacks Cost Evaluation WorksheetDate of Test:Company: Contact Person:RobbJack Rep: Distributor:Machine (Mfg./Model #):Workpiece Material:Tensile Strength/Hardness: Heat Treatment:Operation:

Cutting Costs: Current RobbJackTool Number:Coating:Price per Tool: $ $# of Parts Machined per Tool:Tool Cost per Part: $ $Total Parts per Year:Total Tool Costs/Year: $ $Savings/Year: $

Machine Costs Current RobbJackTool Diameter:Number of Flutes/Teeth:Cutting Speed (SMM):Spindle Speed (RPM):Feed per Tooth (mm):Feed Rate (mm/Minute):Total Cutting Time per Part (Min.)Hourly Rate of Machine: $ $Machining Costs per Part: $ $Total Parts per Year:Total Machining Costs/Year: $ $Savings/Year: $

Tool Changing Costs Current RobbJackTool Changing Time (Min.):Hourly Shop Rate $ $Cost per Tool Change: $ $Tool Changes per Year:Total Tool Changing Costs/Year: $ $Savings/Year: $

Tool Presetting Costs Current RobbJackTotal Tool Presetting Time (Min.):Hourly Rate of Presetter: $ $Costs per Tool Presetting: $ $Total Tool Presettings per Year:Total Presetting Costs/Year: $ $Savings/Year: $

Cost Evaluation Totals Savings/YearTool Costs Savings/Year $Machining Costs Savings/Year $Tool Changing Costs Savings/Year $Tool Presetting Costs Savings/Year $

Total Savings/Year with RobbJack Tools $

Divide price per tool by # of parts machined

Multiply total cost per part by total parts per yearSubtract current total tool costs from RobbJack total tool costs

Multiply SMM by 318.057; then divide by tool diameter

Multiply RPM by feed per tooth; then multiply by # of flutes

Divide hourly rate by 60; then multiply by total cutting time per part

Multiply machining cost per part by total parts per yearSubtract current total machining costs from RobbJack total machining costs

Divide hourly rate by 60; then multiply by tool changing timeDivide total parts per year by # of parts machined per toolDivide tool changes per year by cost per tool changeSubtract current tool changing costs from RobbJack tool changing costs

Divide hourly rate by 60; then multiply by tool presetting timeDivide total parts per year by # of parts machined per toolDivide tool presettings per year by cost per tool presttingSubtract current tool prestting costs from RobbRack tool presetting costs

See below for procedure on calculating values:

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Use this form to easily cal-culate your actual savings when applying our tools to your specific application. Please contact us if you need any assistance.

$ave with RobbJack Tools!

RobbJack Corporation3300 Nicolaus Road,Lincoln, CA 95648Toll Free: 800 527-8883Phone: 916 645-6045Fax: 916 645-0146www.robbjack.com

Manufacturers of Premium Rotary Cutting Tools

For more information contact:

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Visit www.robbjack.com/cew for downloadable and print-able copies (.pdf) of this form along with Excel (.xls) versions that do all the cal-culations for you!