Bi-Polar Electromagnets
Bi-polar electromagnets have widely spaced poles with a continuous magnetic field down the full length of the magnet face. These two-pole electromagnets generate a parallel magnetic field that is useful for lifting on radiused surfaces.
Bi-polar electromagnets are heavy duty magnets designed to meet a wide range of manual and automated application requirements.
Features
- Continuous magnetic field down the full length of the magnet face
- Widely spaced two-pole design
- Multiple sizes and strengths available
- Designed for use with Storch DC power supplies
Benefits
- Useful for lifting on radiused steel surfaces
- Concentrated holding power for temporary holding and transfer
- Heavy duty construction for manual or automated applications
- Many configurations to fit the application
Typical Applications
- Radiused steel part handling
- Part transfer
- Temporary holding
- Automated pick-and-place handling
Bi-Polar Electromagnet Models
Use the filterable table below to compare breakaway force, voltage, wattage, body dimensions, tapped hole size, and mounting dimensions.
| Part No. |
Break Away (lbs) |
Volts (DC) |
Watts | A (in.) |
B (in.) |
C (in.) |
D-Tap | E (in.) |
F (in.) |
|---|---|---|---|---|---|---|---|---|---|
| E312-11010 | 47 | 12 | 3.80 | 1.00 | 1.00 | 1.38 | 1/4-20 | - | .50 |
| E312-11020 | 119 | 12 | 6.40 | 1.00 | 2.00 | 1.38 | 10-32 | - | 1.00 |
| E312-11030 | 148 | 12 | 9.00 | 1.00 | 3.00 | 1.38 | 1/4-20 | - | 2.00 |
| E312-11040 | 193 | 12 | 8.60 | 1.00 | 4.00 | 1.38 | 5/16-18 | - | 3.00 |
| E312-11060 | 234 | 12 | 17.20 | 1.00 | 6.00 | 1.38 | 5/16-18 | - | 4.50 |
| E312-22040 | 508 | 12 | 19.70 | 2.00 | 4.00 | 2.75 | 3/8-16 | - | 3.00 |
| E324-22060 | 490 | 24 | 31.10 | 2.00 | 6.00 | 2.75 | 3/8-16 | - | 4.50 |
| E324-22080 | 921 | 24 | 41.90 | 2.00 | 8.00 | 2.75 | 1/2-13 | - | 6.25 |
| E324-22120 | 1300 | 24 | 49.00 | 2.00 | 12.00 | 2.75 | 1/2-13 | - | 10.00 |
| E324-40080 | 2769 | 24 | 105.20 | 4.00 | 8.00 | 4.75 | 3/8-16 | 3.00 | 6.25 |
Sourcing Note
Bi-polar electromagnets should be selected based on the part geometry, surface condition, available contact area, voltage requirements, duty cycle, and required safety factor. For radiused parts, review the application details before selecting a model based only on published breakaway values.
Frequently Asked Questions
What is a bi-polar electromagnet?
A bi-polar electromagnet uses two widely spaced poles to create a continuous magnetic field down the length of the magnet face. This design can be useful where a parallel magnetic field is needed across the contact area.
Why are bi-polar electromagnets useful on radiused surfaces?
The widely spaced pole design can provide better magnetic contact across certain curved or radiused steel surfaces compared with magnet designs that concentrate the field in a smaller area.
What does breakaway force mean on this chart?
Breakaway force is the force required to pull the electromagnet away from the test material under ideal test conditions. Actual performance can be lower depending on air gap, surface finish, material thickness, paint, scale, oil, contact area, and part geometry.
Why does Storch recommend a 50% derating factor?
A derating factor helps account for real-world conditions that reduce holding force. Published breakaway values are based on vertical lift of a dry, unpainted, ground surface, 1" thick mild steel plate.
Do these electromagnets require DC power?
Yes. These bi-polar electromagnets are designed to be energized with a DC power supply matched to the selected voltage and wattage requirements.