Bar magnet NdFeB, brass body with fitting tolerance h6, Rod magnet NdFeB (Neodymium-Iron-Boron).
Magnet ID:              NDPBT-1320
Material: Circular rods made of NdFeB and brass body
Plating / Coating:  galvanized        
Shape:         Bar / Rod
Tolerance:           D ±0.1 mm / H ±0.2 mm
Magnetisation Direction:    anisotrop
Maximum Operation Temperature: 80 °C 
Delivery Time:           14-35 days
Article number         D mm                H mm         A¹ mm     Distance mm      Force* N         Weight g      Temperature °C
NDPBT-1320             13               20(+0.2/-0.2)       6             2.5                       70                20                   80        
       
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.