E Magnets UK
Neodymium Magnets are made from an alloy containing, amongst others, the elements Neodymium, Iron and Boron (NdFeB). The NdFeB magnets are the strongest type of magnet commercially available and are manufactured in a wide range of shapes, sizes and grades. We offer 47 grades of licensed Neodymium Iron Boron with 24 types of coating finish for each grade.
Samarium Cobalt (SmCo) magnets are made by a sintering process and exist in two forms. The first is Sm1Co5 (SmCo 1:5) and this has a maximum energy product of between 18 and 22 MGOe. The second, and more common, form is Sm2Co17 (SmCo 2:17) and this has a maximum energy product of between 22 and 30 MGOe. The main SmCo alloy is around 35% Samarium (Sm) and 60% Cobalt (Co) with the balance being from varying amounts of Iron (Fe), Copper (Cu), Hafnium (Hf) and Zirconium (Zr). Praseodymium (Pr) may also be used.
Samarium Cobalt is also known as SmCo, Rare Earth Cobalt, RE Cobalt, RECo and CoSm.
Samarium Cobalt (SmCo) magnets are not as strong as the Neodymium (NdFeB) magnets (maximum energy product of between 30 and 50 MGOe) but they have three significant advantages. The SmCo magnets work over a wider temperature range, have superior temperature coefficients and have much greater corrosion resistance.
Alnico magnets are produced by either a sintering method or, more commonly, a casting method. Alnico is an alloy containing Aluminium, Nickel, Cobalt, Iron and Copper. It is a hard yet brittle magnet which is very difficult to machine or drill and is not recommended for structural use. The as cast or as sintered shape is acceptable for many applications but surfaces may be precision ground for a smoother surface finish with tighter tolerances although this will increase cost. As the magnets are sintered or cast, small quantity production runs are generally not possible or, if done, may contain significant tooling charges and minimum quantity requests (casting requires sand molds to be made, sintering requires die presses to be made). The standard grade is Alnico 5 although other grades are available which we can offer as part of our bespoke magnet service. Cast Alnico magnets may have very small air holes in their structure – this is normal and cannot be avoided. Sintered Alnico magnets do not have holes in the structure.
We offer an extensive range of Pot Magnets, from small Pot Magnets lifting 400g up to large Pot Magnets lifting up to 130kg. They exist in a wide range of diameters and heights.
We offer seven types of Pot Magnet:-
Pot Magnet with External Threaded Stud / Boss Mounting
Pot Magnet with Internal Threaded Mounting (Deep Pot)
Pot Magnet with Countersunk Mounting (Shallow Pot)
Pot Magnet with Through Hole Mounting
Pot Magnet with Internal Threaded Stud / Boss Mounting
Pot Magnet with Threaded Through Hole Mounting
Limpet Pot Magnet
We offer Pot Magnets in a silver (chrome, zinc or nickel) finish, a white paint finish, a red paint finish, black rubber coated finish and ferritic stainless steel finish.
Our Pot Magnets can be used in a variety of applications. For example they can be used in extremely cold applications (in theory towards absolute zero) and in extremely hot conditions (up to +300 degrees C, perhaps up to +350 deg C).
Magnetic Sweepers are the perfect solution to the problem of clearing small ferrous metal objects, such as nails,tacks,nuts,bolts and metal shavings from of the floor.
They are available in hand held or fork lift truck style.
The hand held sweeper has an extendable handle and the magnet can be turned off to allow the debris to fall away into a skip or bin. The wheels can also be removed making it easy to transport.
The fork lift truck sweeper cames in two types, one with mounted brackets to allow the forks to go through and also with two eyebolts to allow chains to be attached to it.
The sweepers are ideal for using in garages,wokshops,car parks and warehouses etc.
Magnetic Separators use Separator Magnets to pull and remove ferromagnetic contamination from the material being processed.
The Magnetic Separators are placed in line with the flow of material. The trapped ferrous material will be kept not on the side of the Separator Magnet in first contact with the material but instead on the other side (this would be the underside if a Magnetic Separator is part of a gravity fed system). This method does not slow down the rate of passage of material through the Magnetic Separator (unless it is not regularly inspected and cleaned and a build-up occurs).