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DC OPPOSITE POLE ELECTROMAGNETS

Distinct pole on each end (dipole).

Max field strength at surface.

Repelling application.

Pole polarity is changeable.

 

Tech data of Opposite Pole Electromagnets:

Part Number

Outer Diameter

Height

Mounting Thread

Thread Depth

Lead Location

Pole Diameter

Lead Length

Net Weight

List Price

A

B

C

D

E

F

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OP-1212

1-1/4”

1-1/4”

1/4-20

1/2”

3/16”

5/8”

24”

5.7 oz.

$70

OP-2025

2”

2-1/2"

1/4-20

3/4”

1/2”

1”

36”

2 lbs.

$109

OP-3030

3”

3”

5/16-18

1”

5/8”

1-1/2”

36”

5 lbs.

$195

Application data of OP-1212 Electromagnet:

Applied Voltage

Current Draw

Average Flux Density

Holding Value

Repelling Each Other

(at surface)

(at no gap)

(#OP-1212 vs. #OP-1212 at 1/32" gap)

OP-1212

Amps

Gausses

Lbs.

Lbs.

6 V.DC, 100% Duty Cycle

0.72

250

1

0

12 V.DC, 25% Duty Cycle, 10 sec. Max. on-time

1.5

450

4

0

18 V.DC, 10% Duty Cycle, 5 sec. Max. on-time

2.2

750

8

0.2

24 V.DC, 5% Duty Cycle, 2 sec. Max. on-time

2.9

1050

12

0.6

 

 

Application data of OP-2025 Electromagnet:

Applied Voltage

Current Draw

Average Flux Density

Holding Value

Repelling Each Other

(at surface)

(at no gap)

(#OP-2025 vs. #OP-2025 at 1/32" gap)

OP-2025

Amps

Gausses

Lbs.

Lbs.

6 V.DC, 100% Duty Cycle

1.9

450

12

0

12 V.DC, 25% Duty Cycle, 20 sec. Max.on-time

3.7

950

48

0

18 V.DC, 10% Duty Cycle, 10 sec. Max. on-time

5.6

1450

84

1

24 V.DC, 5% Duty Cycle, 4 sec. Max. on-time

7.5

1950

104

2.5

 

Application data of OP-3030 Electromagnet:

Applied Voltage

Current Draw

Average Flux Density

Holding Value

Repelling Each Other

(at surface)

(at no gap)

(#OP-3030 vs. #OP-3030 at 1/32" gap)

OP-3030

Amps

Gausses

Lbs.

Lbs.

6 V.DC, 100% Duty Cycle

4.3

550

50

0

12 V.DC, 25% Duty Cycle, 40 sec. Max. on-time

8.6

1100

150

1

18 V.DC, 10% Duty Cycle, 20 sec. Max. on-time

13

1700

250

3

24 V.DC, 5% Duty Cycle, 8 sec. Max. on-time

17

2100

300

6

 

Electromagnets repelling permanent magnets:
There is no test data available for an opposite pole electromagnet to repel a permanent magnet, due to too many undefined variables of a permanent magnet. Permanent magnets must be disc shaped in order to work with opposite pole electromagnets. Typical permanent magnet sizes are 5/8" diameter x 1/16" thick Neodymium magnet for OP-1212; 1" diameter x 1/8" thick Neodymium magnet for OP-2025; and 1-1/2" diameter x 1/4" thick Neodymium magnet for OP-3030. For more data see guideline at Electromagnets repelling an permanent magnet at Applications. However, Magnetech Corp. has developed a line of proprietary design of electromagnets with selected permanent magnets called Push-Pull electromagnets.

Dimensional Drawing:

opposite_pole_dimensionsopposite_pole_application


Custom Opposite Pole Electromagnets:

Custom products were those we had designed and manufactured in the past. We can make similar products per custom specs, however cannot provide specs on displayed units. Those are not in stock.

opposite pole electromagnetrectangular opposite pole electromagnet


Safety Caution:

The holding values as listed are actual readings of breaking away a 1/2" steel plate with no air-gaps between them. They have not been de-rated. For safety in holding applications, do not use electromagnets at more than 1/2 of rated value. In lifting applications, do not use at more than 1/4 of rated value. Do not use electromagnets over people.