Conveyor speed and throughput calculator
Conveyor throughput is speed divided by pitch. Everything else follows from the drum diameter and the gearbox.
rpm
kg/m
Belt speed
0.2932m/s
- Belt speed
- 17.59 m/min
- Parts per minute
- 70.37
- Parts per hour
- 4222
- Drum speed
- 46.67 rpm
- Time to traverse the belt
- 0:40.9
- Parts on the belt at once
- 48.0
- Rough drive power Assuming a rolling resistance coefficient of 0.05.
- 43
Show the working
- Drive drum diameter = 120
- Motor speed = 1400
- Gearbox ratio = 30
- Spacing between parts = 250
- Belt length = 12
- Load per metre = 25
- Drum speed = 1400 / 30 = 46.6667
- Belt speed = pi * 120/1000 * 46.6667 / 60 = 0.293 215
- Belt speed = 0.293 215 * 60 = 17.5929
- Parts per minute = 250 > 0 ? 0.293 215 * 60000 / 250 : 0 = 70.3717
- Parts per hour = 70.3717 * 60 = 4222.3
- Time to traverse the belt = 0.293 215 > 0 ? 12 / 0.293 215 : 0 = 40.9256
- Parts on the belt at once = 250 > 0 ? 12 * 1000 / 250 : 0 = 48
- total_load = 12 * 25 = 300
- drive_force = 300 * 9.80665 * 0.05 = 147.1
- Rough drive power = 147.1 * 0.293 215 = 43.1319
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- belt speed = pi x drum diameter x drum rpm / 60
- throughput = speed / part pitch
Belt slip and drum lagging thickness both change the effective diameter, so measure the real speed rather than trusting the calculation alone.