Inner 8 Poles DC Oil Pump Magnetic Rotor With Injection Ferrite Permanent Magnets

Inner 8 Poles DC Oil Pump Magnetic Rotor With Injection Ferrite Permanent Magnets, Multi-Pole Injection Magnetic Rotor for Brushless DC Canner Pump, Multipolar Permanent Injection Ferrite Rotor Magnets, Automobile Motor Magnetic Rotor Magnets, Multipole Injection Molded Ferrite Magnetic Assemblies, Bonded Injection Molded Permanent Magnets, Isotropic and Anisotropic Permanent Plastic ferrite bonded magnet China Supplier

Inner 8 Poles DC Oil Pump Magnetic Rotor With Injection Ferrite Permanent Magnets  parameter:
Part No. HSROTOR-2
Application Moto Magnet
Composite Ferrite Magnet
Processing Service Moulding, Punching, Cutting, Decoiling, Welding, Bending
Shape Cup Shape
Type Permanent
Material TC-UA1220+Copper Sets
Magnetic pole inner 8 poles
Size 41.6*35.2*H24.3mm
Use DC oil Pump
Craft Capsule Plastic

Surface Gauss >1500 GS
Composition 90% Fe2O3+10% Nylon 12
Operating Temperature -30~120 ℃
Equipment Injection Molded
Production Capability 50~100k/Month
Advantage
1.Easy to assemble
2.Good Dynamic Balance
3.Better Homogenty and consistency

The selection of a water pump rotor magnet involves evaluating the specific motor type, environmental conditions, and required magnetic flux density. These components are critical for converting electrical energy into mechanical energy to drive the pump impeller.

The most common materials for water pump rotor magnets are injection-molded or sintered ferrites and bonded neodymium-iron-boron (NdFeB). Ferrite magnets are typically chosen for low-power, cost-sensitive applications like small fish tank pumps, footbaths, and drinking fountains because they are highly resistant to corrosion and moisture without needing extra coatings.[2] [5] In contrast, bonded NdFeB magnets are utilized for high-efficiency or high-pressure systems, such as fountain pumps and brushless submersible pumps, where a high magnetic field strength is required in a compact size.

Technical Specifications and Design
The design of these rotors often involves complex geometries and magnetization patterns to optimize motor performance:

Magnetization Patterns: Rotors can be magnetized radially, axially, or in multi-pole configurations (e.g., 2-pole, 4-pole, 8-pole, or 10-pole).For example, a radial 10-pole injection-molded ferrite rotor is frequently used in brushless DC (BLDC) air-conditioning fans and water flowmeter sensors.
Manufacturing Process: Injection-molded magnets are created by mixing magnetic powder (ferrite or NdFeB) with a thermoplastic binder like PA6, PA12, or PPS.  This allows the magnet to be overmolded directly onto a metal shaft or integrated with an impeller in a single step, ensuring high dimensional accuracy and concentricity (often <0.05mm).
Temperature Resistance: The operating limit depends on the binder; for instance, ferrite with Nylon 6 or PPS can withstand up to 180∘C, whereas NdFeB magnets may experience irreversible loss above 120∘C depending on their intrinsic coercivity. Multi-Pole Injection Magnetic Rotor for Brushless DC Canner Pump