How do I calculate the starting CFR number for my fertilizer or litter spreader?

Frequently Asked Questions

How do I calculate the starting CFR number for my fertilizer or litter spreader?
9/24/2014 8:40:00 AM

Answer
Using the following formula will generate an approximate CFR number. This number should only be used to aide in the calibration process. D x W x H / 1728 = Starting CFR number. Where: D = Chain travel in inches per one revolution of the rear roller W = Actual width of gate opening. H = Gate Height in Inches. In fertilizer spreaders, all Mesh Chain (despite width) moves 13.06 inches per revolution. In litter / lime / compost spreaders, units with 88k chain and six (6) tooth rear rollers, the chain moves 15.75 inches per revolution.

Detail