Cylinder Magnets with hole is one regular shape of Rare earth magnets and perment magnets.
It is always manufactured via Cutting and grinding etc .Block magnets or Rectangle magnets have the following important factors such as ,Length,Width,Thicknes,Round Edge etc.
Our factory produce and manufacture magnets according to customer's design on shape, dimension, grades, coatings etc.
To offer you our Block magnets price,please offer the following details :
Magnets grade :from N35 To N52 ,from N Series to UH Series.
Magnets size : Outer Diameter,Inner Diameter,Thickness
Magnetism direction :which direction to oriented The north pole and south pole
Magnets coating :Nickel ,Zn,Black Epoxy,Ag,Au Etc.
Quantities: More mass order quantities. More Lower the prices. Original factory
These sensors magnets have very good consistency with very small tolerance at +/-0.03mm.
72hours salt spray test as standard. Due to the small holes in magnets, we have to plate magnets with NICUNI much longer time to guarantee the hole can be plated plenty NICUNI.
Around corner can protect magnets from damage and cause any hurt.
Long permanent NdFeB magnets with hole
| Available Coating Of Sintered NdFeB Magnets | ||||||
| Surface | Coating | Thickness(Microns)of coating | Color | Resistance | Salt spray Test Standard (hours) | Pressure Coating Test Standard (hours) |
| Passivation | 1--2μm | Silver Grey | Temporary Protection | Not available | Not available | |
| Nickel | Ni+Ni | 10--20μm | Bright Silver | Excellent against Humidity | 24 | 24 |
| Ni+Cu+Ni | ||||||
| Zinc | ZN | 3--8μm | Bright Blue | Good Against Salt Spray | 24 | Not available |
| C-Zn | shining Color | Excellent Against Salt Spray | 48 | Not available | ||
| CR3+Zinc | ZN | 3--8μm | Bright Blue | Good Against Salt Spray | 24 | Not available |
| C-Zn | shining Color | Excellent Against Salt Spray | 48 | Not available | ||
| Tin | Ni+Cu+Sn | 10--25μm | Silver | Superior Against Humidity | 48 | Not available |
| Gold | Ni+Cu+Au | 2--10μm | Gold | Superior Against Humidity | Not available | Not available |
| Ag | Ni+Ag | 2--10μm | Silver | Superior Against Humidity | Not available | Not available |
| Epoxy | Epoxy | 10--25μm | Black,Grey | Excellent Against Humidity & Salt Spray | 48 | Not available |
| Ni+Cu+Epoxy | Not available | |||||
| Zn+Epoxy | Not available | |||||
Manufacturing process:
Manufacturing equipment:
Various shapes for choice:
