Conveyor speed in feet per minute is calculated from the required number of parts per hour multiplied by the carrier spacing in feet, divided by (60) times the number of parts per carrier.

Conveyor Speed FPM = Parts per Hour x Carrier spacing in Feet / 60 x Parts per Carrier

In order to allow for variation in production requirements, it is desirable to set a maximum speed greater than that calculated and use a variable speed drive. A speed of 50 to 70 feet per minute is usually considered a conservative maximum. Thirty feet per minute is more convenient for loading and unloading and reduces wear on chain and trolleys.