Magnet Shape: Pot with Threaded Stem / External Thread
Material: Hard Ferrite (Ceramic) and Steel
Coating: Zinc(Zn)
Grade(Chinese Stardard): Y33
Magnet ID: FPET-25-Y33-Zn
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 4.1-4.3 KGs (mT): 410-430 mT
Intrinsic Coercivity Force (Hcj): 2.76-3.14 KOe 220-250 KA/m
Coercivity Force (Hcb): 2.83-3.20 KOe 225-255 KA/m
Energy Density (BH)max: 3.9-4.4 MGOe 31.5-35.0 KJ/m³
Operating Temperature: -40 °C to +250 °C
Magnetisation Direction: Axial / Radially magnetized
Pot Magnet Size:
Pot diameter (D): 25 mm
Pot height (H1): 8 mm
Total height (H2): 16.5 mm
Thread (M): M5
Tolerance: +/-2% mm
Delivery time 7-25 days
Measurements
These pot magnets have a stem with an external screw thread. You can slide the stem, for instance, through a hole and fasten it with a nut.
Distinctive feature: These pot magnets have an external thread.
Principle: The hard ferrite magnets are embedded in a steel pot. The steel pot increases the adhesive force of the magnet on direct contact with a thick iron surface. If there is no direct contact with the counterpart, or if the steel plate is thin, painted or rough, you can strain it much less.
Shear force: The indicated adhesive force was measured perpendicular to the surface to which the magnet should stick. It takes a lot less strength to move the magnet sideways. Therefore, you can strain a pot magnet much less if you use it on a wall as opposed to using it on the ceiling.
Rust: These magnets are not rust-proof and therefore intended for dry indoor use.