1、 Different materials

Permanent magnetic chuck: neodymium iron boron.

Electric permanent magnetic chuck: neodymium iron boron, aluminum nickel cobalt.

2、 Different holding operation

Permanent magnetic chuck: the magnetic field acts on the workpiece during holding.

Electric permanent magnetic chuck: the magnetic field does not act on the workpiece during holding, but the magnetic fields of the two internal magnetic materials cancel each other.

3、 Different switching modes of magnetic circuit

Permanent magnet suction cup: the NdFeB magnetic system is rotated or evaluated to realize the switch between holding and releasing.

Electric permanent magnet chuck: the magnetic circuit can be switched by energizing the electromagnetic coil to magnetize or demagnetize the Al-Ni-Co magnet.

4、 Different security levels

Permanent magnet chuck: When the gap between the chuck and the workpiece is large or the steel plate is thin, it is easy to cause safety hazards.

Electric permanent magnet suction cup: when working, sudden power failure or line failure will not lose working ability, and the safety level is higher.

5、 Different maintenance costs

Permanent-magnet suction cup: It has a large demand for maintenance of rotating parts and is easy to wear.

Electric permanent magnet chuck: the magnetic module needs no additional maintenance, is durable and has low maintenance cost.

6、 Different magnetic circuit structure

Permanent magnet suction cup: magnetic force cannot be adjusted, and can only be used for small size production (large size can not be pulled manually).

Electric permanent magnetic chuck: chess-shaped magnetic pole, moderate magnetic penetration depth, magnetic adjustment, not limited by specifications.

7、 Different durability and maintainability

Permanent magnet suction cup: there are rotating parts, large maintenance and easy to wear.

Electric permanent magnetic chuck: permanent magnetic force has no attenuation, magnetic module is maintenance-free, durable, no spare module, low maintenance cost; The electrical components of the controller have short working time, few times and long service life.

8、 Different operating costs

Permanent magnetic chuck: switching magnetic circuit requires manual pulling, which is laborious.

Electric permanent magnet suction cup: it only uses electricity in the process of suction and discharge, with minimal energy consumption and extremely low operating cost.

Next: What are the three types of fixture according to the use characteristics?

Previous: What is the principle of permanent magnet crane?