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Each 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 tables 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 magnet. 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.
WARNING
If there is any diffi culty lifting a load, DON’T LIFT IT!
Call Walker Magnetics for advice at 1-800-962-4638
Rated lift Capacity
(For these materials) =
Reduction Factor
multiplied by
Maximum Load Value
(For 1020 Steel) from Lifting Guidelines (plate). See page 14 & 15.
Example: Lifting SAE 1095 STEEL, ½” thick, ROUGH machined fl at surfaces (use .020” air gap) with
a Model CER09 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. Do not allow water to enter the magnet body.
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 16 for defi nition of Duty Cycle.
THIS TABLE PROVIDES REDUCTION
FACTORS FOR SLELCT 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)
0.5
Pure Nickel
0.10
For Other Materials Consult Walker Magnetics
GUIDELINES FOR REDUCTION OF RATED LIFT CAPACITY
