Does the wear factor cover the robot too?

No. The factor covers EOAT wear parts such as jaws, cups, seals, cables and the rebuild labor quoted with them. Robot preventive maintenance belongs in the cell overhead, not in this per part tooling cost.

Which part count should I use for the tool life?

The production this tool will see from now to replacement or major rebuild, from the program and the forecast. If the cell is redeployed partway, count only the parts this tool handles there.

How do I estimate the wear and rebuild factor?

Start at 1.0 for a tool with no rebuild planned, then add each rebuild or spare set divided by the installed cost. A 2,000 dollar rebuild on a 12,000 dollar tool adds about 0.17.

Do spares in the purchase order count as installed cost?

Yes if they were bought with the tool. Shelf spares are part of ownership, so put their cost in the installed total or in the rebuild factor, never in both.

Robotics & Automation calculator

EOAT Cost per Part Calculator

Spread the installed EOAT cost over the parts the tool will run before rebuild or replacement, then add the wear and rebuild premium. The loaded figure is the tooling cost that belongs in a piece price.

What this calculator does

EOAT cost per part: the installed tooling cost amortized over its life, plus the wear and rebuild premium.

Formula used

Raw cost per part ($) = installed EOAT cost ÷ parts over EOAT life
Loaded cost per part ($) = raw cost per part × wear and rebuild factor
Wear and rebuild cost per part ($) = raw cost per part × (factor − 1)

Inputs explained

Installed EOAT Cost: Gripper, jaws, sensors, changer, build labor and included spares.
Parts Over EOAT Life: Parts produced before replacement or major rebuild.
Wear and Rebuild Factor: 1.0 as bought; add for rebuilds and wear parts over life.

How to use the result

Best suited to justifying a servo gripper against a pneumatic one, setting a rebuild reserve in a piece price, comparing two EOAT quotes on life cost.
One EOAT only; a tool changer with several heads needs a cost per part for each. Downtime and changeover time with the tool are separate; this is tool amortization only.

Current U.S. benchmarks

Global copper trades at $13,543 per tonne (IMF via FRED, Jul 2026), up 38.6% in a year, and U.S. industrial electricity averages 9.77 cents per kWh. Both feed electrified-hardware unit economics.

Common questions

Does the wear factor cover the robot too? No. The factor covers EOAT wear parts such as jaws, cups, seals, cables and the rebuild labor quoted with them. Robot preventive maintenance belongs in the cell overhead, not in this per part tooling cost.
Which part count should I use for the tool life? The production this tool will see from now to replacement or major rebuild, from the program and the forecast. If the cell is redeployed partway, count only the parts this tool handles there.
How do I estimate the wear and rebuild factor? Start at 1.0 for a tool with no rebuild planned, then add each rebuild or spare set divided by the installed cost. A 2,000 dollar rebuild on a 12,000 dollar tool adds about 0.17.
Do spares in the purchase order count as installed cost? Yes if they were bought with the tool. Shelf spares are part of ownership, so put their cost in the installed total or in the rebuild factor, never in both.

Last reviewed 2026-10-01.