Bar Rod magnets AlNiCo, Deep Pot Holding, steel body with Threaded Stem, Female Thread, zinc coated, Rod magnet AlNiCo (Aluminum Nickel Cobalt) with metal pot and internal thread.
Magnet ID:              ADPIT-0820
Material: Circular rods made of precision-cast AINiCo 500 and steel body
Plating / Coating:  zinc        
Shape:         Bar / Rod  
Tolerance:           D ±0.1 mm / H ±0.2 mm
Magnetisation Direction:    anisotrop
Maximum Operation Temperature: 450 °C 
Delivery Time:           14-35 days
Article number         D mm                H mm           Thread MxL      Force* N     Weight g      Temperature °C    
ADPIT-0820         8(+0.1/-0.1)     20(+0.2/-0.2)            M3x5                 4                  7.5                    450        
Measurements:

All holding magnet systems are combinations of permanent magnets and iron structures. The iron on the magnet´s pole shaped into sleeves, pots or other pole pieces guides and concentrates the magnetic flux onto the holding surface.
This surface must be sufficiently large to be able to carry the total flux of the magnet. The best holding forces are obtained by using annealed steel with a flat, smooth surface.
Several magnet systems are shown below. The holding force of the system shown in comparison to an open magnet is given as an approximate factor.