
Lifting Equipment LTD is able to supply a range of permanent lifting magnets; A permanent lifting magnet provides an efficient and cost effective way of lifting heavy ferromagnetic loads like mild steel, and can be used on flat as well as cylindrical materials.
Permanent lifting magnets are commonly used in the steel industry, or where steel is regularly handled, in particular, steel plate; they are also used in areas such as ship yard scrap yards, workshops, machine shops and warehouses.
A lifting magnet is ideal for use alongside electric hoists and cranes and other Lifting Equipment LTD can supply. We can provide lifting magnets in 6 different lifting capacities ranging from 100Kgs up to 2000Kgs all of which are supplied with a safety locking handle, to prevent unintentional discharge of the load.
The permanent lifting magnets that we supply present an effortless one man installation, simply hook on to your hoist hook or crane hook and lifting may begin.



| Model | Flat Material | Round Material | |||||
| Maximum capacity SWL | Minimum thickness to obtain Max. SWL | Maximum length of material | Maximum capacity SWL | Diameter | Maximum length of material | Tear off force | |
| Kg | mm | mm | Kg | mm | mm | Kg | |
|---|---|---|---|---|---|---|---|
| LGD1 | 100 | 15 | 2000 | 50 | 200 - 300 | 2000 | 300 |
| LGD3 | 300 | 19 | 2500 | 150 | 200 - 300 | 2500 | 900 |
| LGD5 | 500 | 25 | 3000 | 250 | 200 - 400 | 3000 | 1500 |
| LGD8 | 800 | 35 | 3500 | 400 | 200 - 400 | 3500 | 2400 |
| LGD10 | 1000 | 40 | 3500 | 500 | 200 - 400 | 3500 | 3000 |
| LGD20 | 2000 | 55 | 3500 | 1000 | 200 - 400 | 3500 | 6000 |

It is important when choosing your lifting magnet to take into account the thickness of materials to be lifted; this is because the clamping force will be significantly reduced if the magnet lifts thinner plate than the recommended minimum. The performance curves of this lifting gear are identified along with the adhesive force / flat thickness is the diagram.

It is the high magnetic forces that are produced via the lifting magnet which allow it to hold securely the materials through the air gap. Air gaps can occur in several ways, including badly machined surfaces, paint and dust particles and also heavy mill scale.
As all air gaps significantly reduce the lifting capacity of the magnet, the SWL will need to be down graded accordingly. Please look at the diagram for precise data.
Lifting magnets can only achieve their full lifting capacity when total contact is achieved with the material. Some factors will influence whether absolute contact is made, such as holes, dents or an uneven surface, these factors will decrease performance; during these conditions always do a test lift first to establish a correct and safe lift.
There are certain materials that have varying capabilities to carry magnetism for any material other than mild steel a reduction factor will need to be used, to determine the effective clamping force.
| Reduction of capacity for material type | % of capacity |
|---|---|
| Temperature ≤ 60°C | 100% |
| Humidity ≤ 80% | 100% |
| St 52 | 95% |
| Alloy Steel | 80% |
| High Carbon Steel | 70% |
| Cast Iron | 45% |
| Nickel | 45% |
| Austenitic Stainless Steel | 0% |
| Brass | 0% |
| Aluminium | 0% |


Digg ItEmail
Linked InReddit