LOAD WEIGHT GUIDELINE
To estimate the weight of a steel work piece, first determine the volume of the Load in cubic inches.
Then multiply the volume (cubic inches) by the density of steel (.283) pounds per cubic inch.
Load Weight (steel)= (volume) multiplied by (density)
= (W
X
T
X
L)
X
(.283)
Example: What is the weight of a 1 O" wide x 5" thick x 96" long
piece of steel?
Load Weight= (10 x 5 x 96) x (.283) = 1358 lbs.
8000 ,--------------------, .---
---
12"x12
+
10"x10
� 5000t--
---------
-�
---
�
........
8"x8"
C:
:::,
0
..9: 4000 ,___ _______________ ___,
-e-
6"x6"
·cu
3: 30001--------.F-----:.,1"--------=��
4"x4"
.......
3"x3"
20001------.C---::;,1'-------,-::,,olll"
::;__
--------,-,--I--
0
0 1 2 3 4 5 6 7 8 9 10
11
12 13 14 15
Length of Square Bar (Feet)
DUTY CYCLE
DO NOT EXCEED THE RATED 50% DUTY CYCLE OF THESE MAGNETS. (Exceeding the duty
cycle will result in reduced lifting capacity, less operating time between battery charges, and a reduc
tion in the life of the magnet.)
Duty cycle rating (D.C. %) is defined as:
(Time On x 100) / (Time Off+ Time On) = D.C. % and is expressed as a Percent (with a maximum of
10 minutes Time On.)
Therefore, to maximize the effectiveness of your magnet, keep the power off when the magnet is not
in use.
14
EXAMPLES:
3 MINUTES ON, 1 MINUTE OFF EQUALS: (3 x 100) / (3 + 1) = 75%
5 MINUTES ON, 5 MINUTES OFF EQUALS: (5 x 100) / (5 + 5) = 50%
£WARNING
If you have any difficulty lifting a load, DON'T LIFT IT!
Call O.S. Walker for advice at 1-800-962-4638
O.S. Walker Inc., Battery Powered Magnets
