How do you calculate required conveyor speed from carriers per hour?

Divide your target loaded carriers per hour by the loading efficiency, then multiply by carrier spacing in inches and divide by 720. With 420 carriers/hr, 24 in pitch and 95% efficiency, that is 442.1 carriers/hr needing 14.74 ft/min.

Why divide by 720 in the speed formula?

720 converts carriers/hr at an inch pitch into ft/min: it folds together 60 minutes per hour and 12 inches per foot (60 x 12 = 720), so spacing in inches and rate in per-hour resolve cleanly to feet per minute.

What is a good carrier loading efficiency?

Manual load stations typically run 85-95% once balanced; the 95% used here is a well-tuned line. Lower efficiency forces a higher carrier rate and therefore faster chain speed to hit the same output.

What happens if I increase carrier spacing?

Speed rises proportionally. At 24 in pitch you need 14.74 ft/min; widening to 36 in pitch for the same 442.1 carriers/hr would require about 22.1 ft/min, which may exceed safe load-station speed.

Carrier rate vs conveyor speed - what is the difference?

Carrier rate is how many carriers pass a point per hour; conveyor speed is the linear chain velocity. The calculator first finds the efficiency-adjusted rate (442.1 carriers/hr) then translates it through pitch into 14.74 ft/min.

Does this account for empty return carriers?

No. The result is the speed needed to deliver loaded carriers. If loaded and empty carriers share one continuous chain, the same speed applies, but plan extra carriers in the loop to keep the load station fed.

Conveyors calculator

Carrier Spacing Conveyor Speed Calculator

A carrier spacing speed check converts a target throughput of loaded carriers into the chain speed your power-and-free or overhead conveyor must actually run. Line engineers and paint/assembly process owners use it when they know how many parts per hour must leave the line but need to know the ft/min that pulls carriers past load stations fast enough. Because carriers ride on fixed center-to-center pitch, speed and spacing are locked together, so a small change in pitch swings the required speed. It matters because running too slow starves downstream cells while running too fast outpaces operators at the load point.

What this calculator does

Check required conveyor speed from target output and carrier or hanger spacing.
a conveyor system designer needs to validate carrier spacing before fixing chain speed or carrier count
It computes the conveyor speed in ft/min needed to deliver a target number of loaded carriers per hour at a given carrier pitch and loading efficiency.

Formula used

Required carrier rate = target loaded carriers ÷ loading efficiency
Required conveyor speed = required carrier rate × carrier spacing ÷ 720

Inputs explained

Target loaded carriers per hour:
Carrier center-to-center spacing:
Carrier loading efficiency:

How to use the result

Use it when commissioning an overhead or power-and-free line, rebalancing takt, or checking whether a requested output rate is physically achievable at the current carrier pitch.
It assumes uniform carrier pitch and steady speed; it does not model accumulation zones, indexing dwell, or empty-carrier return, so real line speed may need a margin above the calculated value.

Current U.S. benchmarks

The U.S. has 21,668 machinery manufacturing establishments employing about 1,086,146 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate required conveyor speed from carriers per hour? Divide your target loaded carriers per hour by the loading efficiency, then multiply by carrier spacing in inches and divide by 720. With 420 carriers/hr, 24 in pitch and 95% efficiency, that is 442.1 carriers/hr needing 14.74 ft/min.
Why divide by 720 in the speed formula? 720 converts carriers/hr at an inch pitch into ft/min: it folds together 60 minutes per hour and 12 inches per foot (60 x 12 = 720), so spacing in inches and rate in per-hour resolve cleanly to feet per minute.
What is a good carrier loading efficiency? Manual load stations typically run 85-95% once balanced; the 95% used here is a well-tuned line. Lower efficiency forces a higher carrier rate and therefore faster chain speed to hit the same output.
What happens if I increase carrier spacing? Speed rises proportionally. At 24 in pitch you need 14.74 ft/min; widening to 36 in pitch for the same 442.1 carriers/hr would require about 22.1 ft/min, which may exceed safe load-station speed.
Carrier rate vs conveyor speed - what is the difference? Carrier rate is how many carriers pass a point per hour; conveyor speed is the linear chain velocity. The calculator first finds the efficiency-adjusted rate (442.1 carriers/hr) then translates it through pitch into 14.74 ft/min.

Last reviewed 2026-05-12.