How do you calculate stator winding labor hours?

Divide the number of stators by the winding rate per station to get base time, then multiply by one plus the allowance fraction. With 120 stators at 12 stators per minute you get 10 hours of base winding time, and a 10% allowance lifts it to 11 hours.

What does the setup, lacing, and connection allowance cover?

It accounts for everything around the raw winding pass: machine setup and tooling changes, end-turn lacing and tying, dressing and connecting the phase leads, and short stoppages. A 10% allowance on 10 base hours adds 1 hour.

Why separate base winding time from required time?

Base time (10 hours here) is the theoretical machine pass; required time (11 hours) is what you actually schedule. Quoting off base time alone underbids every job by the allowance percentage.

What is a realistic winding rate per station?

It depends entirely on frame size and turns per coil. Small fractional-HP stators on automated needle winders can exceed the 12-per-minute example, while large multi-pole stators may take many minutes each, dropping the rate below 1 per minute.

How do I quote a rewind versus a new build?

Rewinds usually carry a higher allowance because stripping old windings, cleaning slots, and re-insulating add manual time the base rate ignores. Raise the allowance well above the 10% new-build figure to stay profitable.

Can I use this for multiple frame sizes in one batch?

Only loosely. The formula uses one average rate, so a mixed batch needs you to either split it into per-frame runs or enter a weighted-average winding rate that reflects the slowest large stators.

Motors, Generators & Electrification Equipment calculator

Stator winding labor Calculator

Stator winding labor estimates the production hours needed to insert, lace, and connect windings into a batch of motor stators. Production planners and winding-cell supervisors in electric motor plants use it to size crews, schedule coil-winding machines, and quote rewind or new-build work. Because winding is usually the throughput bottleneck in a motor line, getting this number right keeps downstream balancing, varnish, and assembly stations fed without idle time. It separates pure machine winding time from the manual lacing and lead-dressing work that an allowance has to cover.

What this calculator does

Estimate the labor hours to wind motor and generator stators so winding teams can plan crew time, schedule the work, and confirm the build or rewind fits the available shift.
Use it when a stator winding or rewind job is going on next week's schedule and you need an honest labor-hour estimate.
It computes the labor hours required to wind a batch of stators by dividing the stator count by per-station throughput, then inflating that base time by a setup, lacing, and connection allowance.

Formula used

Base stator winding time = stators to wind ÷ winding rate per winder
Required stator winding time = base stator winding time × allowance factor

Inputs explained

Stators to wind this run:
Winding throughput per coil-winding station:
Setup, lacing, and lead-connection allowance:

How to use the result

Use it when planning a winding-cell shift, quoting a rewind contract, or checking whether a winding station can clear a batch before the balancing line needs it.
It assumes a steady winding rate; in reality slot fill, wire gauge changes, and machine tooling swaps between frame sizes can shift the effective rate well outside the single number entered.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).
The U.S. has 5,397 electrical equipment and appliances establishments employing about 369,437 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate stator winding labor hours? Divide the number of stators by the winding rate per station to get base time, then multiply by one plus the allowance fraction. With 120 stators at 12 stators per minute you get 10 hours of base winding time, and a 10% allowance lifts it to 11 hours.
What does the setup, lacing, and connection allowance cover? It accounts for everything around the raw winding pass: machine setup and tooling changes, end-turn lacing and tying, dressing and connecting the phase leads, and short stoppages. A 10% allowance on 10 base hours adds 1 hour.
Why separate base winding time from required time? Base time (10 hours here) is the theoretical machine pass; required time (11 hours) is what you actually schedule. Quoting off base time alone underbids every job by the allowance percentage.
What is a realistic winding rate per station? It depends entirely on frame size and turns per coil. Small fractional-HP stators on automated needle winders can exceed the 12-per-minute example, while large multi-pole stators may take many minutes each, dropping the rate below 1 per minute.
How do I quote a rewind versus a new build? Rewinds usually carry a higher allowance because stripping old windings, cleaning slots, and re-insulating add manual time the base rate ignores. Raise the allowance well above the 10% new-build figure to stay profitable.

Last reviewed 2026-05-12.