Non-standard sizes can be customized. Minimum thickness available is 4MM. Note: Labels may vary for production convenience. Please disregard label differences. Precautions: Electromagnets must meet the following conditions to achieve maximum suction: 1. The object to be attracted must have good magnetic permeability. 2. Use the correct power supply with the rated voltage. 3. The object to be attracted must be flat and clean. 4. The object must be equal to or larger than the magnet's surface area. (Example: For a 20x15 mm magnet, the radius r = 10 mm; the object must be at least 10 mm in diameter.) 5. The object must be at least 8 mm thick. (Reduced thickness results in reduced suction.) 6. The object must be in close contact with the magnet surface, with no gaps or intervening materials. Failure to meet any of these conditions will reduce suction force and prevent maximum performance. Please consider these requirements before purchase. For other models, please refer to the table below: | Model | D1 (mm) | D2 (mm) | H (mm) | M | Power (W) | Suction (kg) | |--------|---------|---------|-------|----|-----------|--------------| | 10/10 | 10 | 10 | 4 | 10 | 2 | 0.3 | | 13/27 | 13 | 5 | 27 | 3 | 1 | 1 | | 13/30 | 13 | 5 | 30 | 3 | 1 | 1 | | 20/15 | 20 | 8 | 15 | 4 | 2 | 2.5 | | 25/11 | 25 | 10 | 11 | 4 | 2 | 5 | | 25/20 | 25 | 12 | 20 | 4 | 2 | 5 | | 30/22 | 30 | 12 | 22 | 4 | 3 | 10 | | 30/25 | 30 | 12 | 25 | 4 | 3 | 12 | | 34/18 | 34 | 16 | 18 | 4 | 3 | 18 | | 34/25 | 34 | 16 | 25 | 5 | 3.5 | 20 | | 36/38 | 36 | 38 | 5 | – | – | 25 | | 40/20 | 40 | 18 | 20 | 5 | 3.5 | 25 | | 40/25 | 40 | 18 | 25 | 5 | 4 | 30 | | 49/21 | 49 | 23 | 21 | 6 | 5 | 40 | | 50/27 | 50 | 23 | 27 | 6 | 6 | 50 | | 50/30 | 50 | 23 | 30 | 6 | 7 | – |