40.00% is the example result. Read it using the units and relationship stated below.
CNC Spindle Load uses measured spindle power (kw), rated spindle power (kw).
Keeping feed calculations attached to the cutting conditions
For cnc spindle load, the relationship is Result = (([Measured spindle power (kW)]) ÷ ([Rated spindle power (kW)])) × 100. The amount depends on the supplied measured spindle power (kw), rated spindle power (kw), rather than a live market price or a value imported from another record. A machining relationship connects diameter, speed, feed and engagement. It does not choose a safe starting point without the cutter, material and setup. Manufacturer cutting data should provide the process assumptions used in the form.
What the model includes
Result = (([Measured spindle power (kW)]) ÷ ([Rated spindle power (kW)])) × 100 Keep millimetres and metres distinct, and record whether feed is per tooth, per revolution or per minute. A correct conversion can still be unsuitable when tool reach, workholding, machine limits or chip evacuation changes. Use the result as a conversion or comparison, then validate the process against the tool guidance and machine capability. This page does not replace a tested setup sheet or account for every cutting condition.
Example with the supplied inputs
Measured spindle power (kW): 2; Rated spindle power (kW): 5. Result: 40.00%. The values are illustrative.
Compare one changed input
Measured spindle power (kW) changes from 2 to 2.2. The result becomes 44.00%. All other inputs remain fixed.
Calculation rule
Result = (([Measured spindle power (kW)]) ÷ ([Rated spindle power (kW)])) × 100
Inputs and output
| Input | Example value | Entry convention |
|---|---|---|
| Measured spindle power (kW) | 2 | Use the source quantity represented by measured spindle power (kw). Keep the counted population fixed and avoid mixing a unit value with a period total. |
| Rated spindle power (kW) | 5 | Use the source quantity represented by rated spindle power (kw). Keep the counted population fixed and avoid mixing a unit value with a period total. |
Output: 40.00% is the example result. Read it using the units and relationship stated below. Use the formula to distinguish a cash amount, count, percentage or ratio.
How to use the page
Collect the inputs
Gather Measured spindle power (kW), Rated spindle power (kW). Use one period and the units shown in the form.
Run the calculation
Enter the values and select the action. The calculation rule above explains how the inputs produce the result.
Compare a scenario
Change Measured spindle power (kW) on its own, keeping the other inputs fixed. Read both results before changing another assumption.
Worked example
With the example inputs listed above, the result is 40.00%.
Change Measured spindle power (kW) from 2 to 2.2 while keeping every other value fixed. The result becomes 44.00%. This comparison isolates that input; it does not forecast how other variables will respond.
Check the stated formula, units and limits before using the result in a decision.
Keep the displayed formula, input units and model scope with the result. Corrections or questions can be sent through the request section on this page.
Content updated: October 11, 2026