7.0 - Specifications; Electric Motor Requirements; Recommended Pulley Size Combinations; Bushels Per Hour - Norwood The Grain Handler 8 Operator's Manual

7.0 - SPECIFICATIONS

Electric Motor Requirements

Power Sweep Model
(Bin Diameter)
18'-24'
27'-30'
33'
36'
42'
48'
54'
60'

Recommended Pulley Size Combinations

Unload Pulley Drive Motor Pulley
8" & 10" Unload
14"
19"
Flighting Speed is calculated using a 1750 rpm electric motor. To determine flighting speed (rpm), divide the motor speed
(rpm) by the outside diameter of the large unload pulley, then multiply by the outside diameter of the small motor pulley.
Example: 1750 rpm / 14" x 3-3/4" = 468 rpm. If a slower flighting speed is desired, install a smaller motor pulley.

Bushels Per Hour

Unloading Suggested Auger
Auger Dia. Flighting Speed (RPM)
8"
10"
Fig. # 7-1 Table: Calculations
Auger Drive Design Information:
Above capacity rating based on the following formula: BPH = 0.022 x (D-1)3 x RPM x F
BPH = Bushels Per Hour
D = Diameter of Auger – Inches
RPM = Revolutions Per Minute of Auger Screw
F = % of fill of Auger Tube
The percentage of fill on above degree of incline is approximately the fullest an auger will fill at those inclines.
The above horsepower ratings are for the heaviest material (wheat or soybeans). Capacities and horsepower ratings will vary on the
method of feeding material into conveyor, incline of conveyor, and condition of grain. For wet material, add 50% to horsepower.
EXAMPLE: A 10" Auger, 60' long, operating at a 45° incline at 400 RPM will deliver 3210 BPH and will require 1.60 horsepower per ten
foot section.(Remember to add additional 50% to HP if conveying wet material).
If horsepower is less than 1, double the horsepower; if 1 to 2, multiply by 1.5; if 2 to 4, multiply by 1.25; and if 4 to 5, multiply by 1.1. No
correction is necessary for values above 5 HP.
7 - SPECIFICATIONS
System Horsepower (HP) Requirements with Power Sweep
8" Unload (7" Dia. Sweep Flighting)
Horizontal Powerhead Incline Powerhead
5
7.5
7.5
7.5
10
10
Fig. # 7-1 Table: Electric Motor Requirements
8" Unload
3.75" Double Groove
3.75" Double Groove
Fig. # 7-1 Table: Recommended Pulley Size Combinations
400-500
400-500
Horizontal Power-
7.5
10
10
10
10
15
Pulley Type
10" Unload
Triple Groove
Triple Groove
Capacity
Bushels per Hour
2110 - 2650
4490 - 5030
7-1
10" U-Trough (9" Dia. Sweep Flighting)
Incline Powerhead
head
7.5
7.5
10
10
10
15
20
25.0
Belt Size
8" & 10" Unload
B56
B68
10
15
15
15
15
15
20
30
Flighting Speed
(RPM)
8" & 10" Unload
468
345