Walker Magnetics CER SERIES - Manual (Page 12)

12
O.S. Walker Inc., CER Lift Magnet
: Each Walker magnet model is rated for a different weight limit. Load characteristics will
affect the lifting capacity of the magnets. The lifting guidelines for the various models are shown on the
following pages.
 The Lifting Guidelines charts show the effect of air gap, load thickness, load length, and load width on
lifting capacity. As the thickness of the load decreases, so does the rated lifting capacity of the mag-
net. The tables show the maximum weight or load size, which can be lifted for each thickness under
varying air gap conditions. DO NOT EXCEED EITHER THE MAXIMUM WEIGHT OR SIZE FOR
EACH THICKNESS.
 Each value shown on the Lifting Guidelines charts is for SAE 1020 steel, and any increase in alloy
content will result in further reduction of the lifting capacity of the magnet.
THIS TABLE PROVIDES SOME REDUCTION
FACTORS FOR
MATERIAL OTHER THAN SAE 1020 STEEL
Reduction Factors for Materials
Other than SAE 1020 Steel
Materials
REDUCTION FACTOR
Cast Steel 0.90
3% Silicon Steel 0.80
SAE 1095 Steel 0.70
416 Stainless Steel 0.50
Cast Iron (non-chilled) 0.45
Pure Nickel 0.10
For Other Materials Consult O.S. Walker
CAUTION
If you have any difficulty lifting a load, DON’T LIFT IT!
Call Walker for advice at 1-800-962-4638
WARNING
GUIDELINES FOR THE REDUCTION OF
THE RATED LIFTING CAPACITY:
Rated lift Capacity (For these materials) = Reduction Factor multiplied by Maximum Load Value (For 1020
Steel) from Lifting Guidelines (plate). See page 12.
Example: Lifting SAE 1095 STEEL, ½” thick, ROUGH machined flat surfaces (use .020” air gap) with a Model
CER-9 lifting magnet.
Rated Lift Capacity = 0.70 multiplied by 600 = 420 pounds.
ADDITIONAL OPERATING INFORMATION
Avoid dropping, banging, or slamming the magnet into other objects.
These lifting magnets are electromagnetic devices. Therefore, do not allow water to enter the magnet body. Water is
an electrical conductor and could short out the magnet.
DO NOT EXCEED THE RATED 50% DUTY CYCLE OF THESE MAGNETS. (Exceeding the duty cycle will result in
reduced lifting capacity and a shorter magnet life.) (Refer to Page 14 for definition of Duty Cycle.)