Permanent Magnetic Lifters are mainly used to lift steel plates, blocks, press moulds etc. and load / unload in machines during handling operation. They can hoist moving iron blocks and other magnetic material. They are easy to operation and safe to handle and hence are widely used as lifting devices in factories, docks, warehouses and transportation industries. By using them, you can improve your working condition and increase your working efficiency.
PML's range of Lifting Devices range from 100kg to 5 Ton lifting capacity.
|Type||Rated Lifting Capacity (Kg)||Max Pulling Power (Kg)||L (mm)||B (mm)||H (mm)||R (mm)||Dead Weight (Kg)|
|PML - 100||100||300||92||65||67||107||3|
|PML - 400||400||1200||162||92||91||207||10|
|PML - 1000||1000||3000||233||122||118||235||35|
|PML - 3000||3000||7500||378||234||212||370||82|
Permanent Magnet Lifters have strong magnetic field path produced by NdFeB Magnetic materials. "On" and "Off" of the magnetic path is controlled by turning the lever manually. There are shackles on the top of Magnetic Lifter for lifting.
Load characteristics other than just weight must be considered in order to determine the weight that any magnetic lifter can lift. This statement is true for any lifting magnets because they all operate on the same fundamental laws of Physics. Magnetic power is pictured as lines of force flowing from North to South Pole. Anything that limits the flow of these magnetic lines of force obviously reduces the magnet’s lifting ability. There are four important factors which limit the flow of these lines of force.
Magnetic lines of force do not flow easily through air, they need iron in order to flow freely. Therefore, anything that creates an air gap between a magnet and the load, limits the flow of magnetic force and thus reduces the lifting capacity of a magnet. Paper, dirt, rust, paint and scale act in the same way as air, so also a rough surface finish between the magnet and the load.
When the length or width of a load increases, it ceases to lie flat and the load begins to drop at the edges. The drooping/sagging of the load can create an air gap between the load and the magnet. If this occurs then the lifting capacity of the magnet is reduced.
Magnetic lines of force are more effective when they flow through iron instead of air. The thicker the load, the more the lines of magnetic force. After a certain thickness of load, no more lines of force will flow because the magnet has reached its full capacity. Thin material (load) means less iron available and thus fewer lines of magnetic force flow from the magnet into the load. Therefore, the lifting ability of the magnet is reduced. Every magnet is rated for minimum thickness of load to reach full lifting capacity. Below such thickness of load will be rate the lifting capacity of the magnet. In general, it can be said the load must be thicker than the width of one of the magnet poles.
Low carbon steels, such as soft Iron or Mild Steel are nearly as good conductors of magnetic lines of force as pure iron. However, if the alloys contain nonmagnetic materials, they decrease the ability of magnetic lines of force to flow into the load. An alloy such as ANSI304 of Stainless steel is almost as poor conductor of magnetic force as air.