Calculate Feedgate Opening

N79290-UN-07DEC07

Equation for English Measurement

N82406-UN-18NOV08

Equation for Metric Measurement

A - Feedgate Opening (in.)

B - Yield in (lb./acre)

C - Spread Width (ft.)

D - Average Speed (mph)

E - Conveyor Shaft Revolutions per Minute (CRPM)

F - Material Weight in (lb./cu. ft.)

G - Theoretical CFR (Conveyor Rate) (cu. ft. per revolution)

H - Feedgate Opening (cm)

I - Yield (kg/ha)

J - Spread Width (m)

K - Average Speed (km/h)

L - Conveyor Shaft Revolutions per Minute (CRPM)

M - Material Weight (kg/m³)

N - Theoretical CFR (Conveyor Rate) (cm³per revolution)

If feedgate opening is not supplied with fertilizer ticket, use the appropriate equation (English or metric) to calculate correct opening.

Equations can also be used to calculate conveyor speed required for a desired application rate and feed gate opening.

NOTE: To verify CRPM, mark conveyor shaft and run spreader in manual mode with current settings.

Theoretical CFR Values
CFR (metric)1	CFR (English)2	Conveyor Type						Model
2854	0.256	Belt Over Chain Conveyor						DN456 and DN485
3400	0.305	Straight Belt Conveyor						DN456 and DN485
1605	0.144	Belt Over Chain Conveyor						Second Product Bin