Rotor magnets in water pumps

Water pump rotor magnet is an important part of the pump motor, mainly used to convert electrical energy into mechanical energy, drive the pump work, in this article, you will be introduced to the water pump rotor magnet material, shape, application and how to choose knowledge.

Main purpose of water pump rotor magnets;

Rotor magnets in water pumps are typically used in brushless DC motor (BLDC motor) drive systems, which are commonly found in pumps, fans, and other equipment. The rotor magnet interacts with the stator coil to produce a rotating magnetic field that drives the rotor to turn. The rotor rotation drives the pump impeller to rotate, pushing the liquid to flow.

Electric footbath foot wash bucket water pump rotor magnet assembly

Materials commonly used for water pump rotor magnets;

Typical are ceramic ferrites, including sintered and injection molded ferrites. Neodymium magnets are mainly bonded neodymium magnets, which are cost-effective.

Selection of Rotor Magnets for Water Pumps

The selection of rotor magnets is especially important in water pump applications because they must be corrosion resistant to the moisture and possible chemicals in the pump's operating environment. Neodymium water pump rotor magnets are suitable for most applications that require high magnetic field strength and small size, such as high pressure fountain pumps, brushless submersible pumps, and high efficiency water pumps. Ferrite water pump rotor magnets have weaker magnetic properties and require a larger volume to achieve the same performance and are suitable for low power, low speed pumps such as foot wash bucket pumps, small fish tank pumps, drinking fountains and small water heater pumps.

Water pump inner rotor magnet common magnet shape has hollow cylindrical or curved shape (arc), depending on the design of the motor, hollow cylindrical rotor magnet poles are mainly 2-pole and 4-pole.

Does your company need to buy water pump rotor magnets? You can provide us with the required magnet size, we can provide you with samples or price reference.

Water pump magnet part sample reference;

2 pole radial ferrite hollow cylinders for washing machine pumps

Water pump motor 4 pole permanent ferrite magnet hole 4.4mm

Water pump 4 pole radial ferrite magnet rotor 14mm x 5.2mm x 28mm

Radial 10 pole water flowmeter sensor induction rotor magnet