Size Grade Number
Size Grade Number (SGN) is the measurement of granule size in
millimeters. For machines with spinner height of 182 cm (72 in.) from
ground, spread widths increase 3.5-4 m (10-15 ft.) with a 100 rpm
increase in spinner speed.
A product’s SGN will affect spread width. Knowing the
SGN will help determine correct spinner speed for a chosen product.
Spinner Height 182 cm (72 in.)
|
RPM
|
Spread Width
m (ft.)
|
|
600
|
21-22 (72)
|
|
700
|
24-25 (82)
|
|
800
|
27-28 (92)
|
|
900
|
30-32 (105)
|
SGN Starting Points
|
Granule Mesh
|
Spread Width
m (ft.)
|
|
140-200
|
21 (70)
|
|
220-300
|
24 (80)
|
|
320-400
|
27 (90)
|
|
|
CS12167,0000049-19-20120522
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