Grain Systems Custom, Utility and Bulk Tank Augers PNEG-1434 - Manual (Page 25)

PNEG-1434 6", 8" and 10" Roof Augers 25
5. Electric Drive Motors
Horsepower Information for Electric Motors
A. Horsepower recommendations are for augering reasonably dry grain at different angles. Grain with
15% moisture and above may require more horsepower if maximum capacity is to be maintained.
Use a 2-1/2" to 3" motor pulley for a recommended auger speed of 550 to 650 RPM motor pulley
not furnished. Excessive wear will result if auger speed is in excess of 700 RPM and auger load up
will occur if auger speed is less than 500 RPM or flow gate is required.
B. Auger speeds in excess of 750 RPM should be avoided as excessive wear will result. Auger speeds
below 450 RPM require a flow control to restrict intake to the auger. High torque is required to turn
the flighting if it is permitted to “load up” at low speed and damage to the auger can result. An
optional control gate is available for this purpose.
The charts below are a suggested horsepower requirement for standard 6", 8", and 10" roof augers.
6" Horsepower Chart
Length 11' 16' 21'
Motor HP 1 - 1.5 1 - 1.5 1.5 - 2
8" Horsepower Chart
Length 11' 16' 21'
Motor HP 1.5 - 2 1.5 - 2 2 - 3
10" Horsepower Chart
Length 11' 16' 21'
Motor HP 2 - 3 2 - 3 3 - 5
Electrical controls and wiring should be installed by a qualified electrician.
The motor disconnect switches and conductor cables should comply with the
National Electrical Code and any local codes which apply. Motor starting control
stations should be so located that the operator can see that all personnel are
clear of the equipment.