DC Oil Pump with Permanent Magnet Injection Rotor

DC Oil Pump with Permanent Magnet Injection Rotor, Multipolar Permanent Injection Ferrite Rotor Magnets, Automobile Motor Magnetic Rotor Magnets, Multipole Injection Molded Ferrite Magnetic Assemblies, Bonded ceramic magnet materials, Injection Molded Permanent Magnets, Isotropic and Anisotropic Permanent Plastic ferrite bonded magnet, Magnetic Assembly China Supplier

DC Oil Pump with Permanent Magnet Injection Rotor  parameter:
Part No. HSROTOR-1
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 77*61*H92mm (Hole:14.0)
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

Material: injection bonded Ferrite magnets (plastic magnets)
Magnet Shape: Ring
Magnet Size: OD , T hickness
Magnetization: 4/6/8/12/16/24 Poles on OD
Surface Magnetic filed: 1300-1500Gauss
This magnet is overmoulding on the shaft part ,This specification defines the dimensional and magnetic properties of a multipole magnetic ring for sensor applications.

Application of Injection Magnets
Injection magnet is divided into magnetic ring, magnetic rotor and injection NdFeB. The product dimension has high precision and it is applicable to multi-pole magnetization. These magnets can be made into various complex shapes with adding axle or other inserts in the manufacturing process.

The injection rotor magnet includes the middle metal shaft and plastic magnetic material injection molding, and some of the main rotating parts in power machinery and work machinery.

Typical rotors include turbine mechanical rotors, motor rotors, rotors for various pumps, and rotors for turbine compressors. Used in automotive interior parts, electrical and motor parts, connectors, motors and other fields, with high impact resistance, wear resistance, electrical insulation, low moisture absorption, low viscosity, thermal stability and other performance characteristics.

The design and manufacturing of a DC oil pump rotor with an injection permanent magnet involve a sophisticated integration of material science and electromagnetic engineering to meet the rigorous demands of modern automotive and industrial applications. The rotor typically utilizes injection-molded bonded magnets, such as Ferrite or Neodymium (NdFeB) powders mixed with thermoplastic binders like PA12, PA6, or PPS, which are overmolded onto a shaft or integrated into a plastic impeller assembly. This process allows for high dimensional accuracy (concentricity < 0.05mm), complex shapes like damping grooves or steps, and flexible magnetization patterns including radial, axial, or multi-pole configurations on the outer diameter.

In the context of hybrid electric vehicles (HEVs), recent advancements have shifted toward rare-earth-free designs to reduce costs and mitigate demagnetization risks at high temperatures. A state-of-the-art approach involves an interior tangential brushless DC (BLDC) motor using ferrite magnets, which feature a positive temperature coefficient that enhances stability under heat. To optimize performance, engineers have developed “air-isolated” injection-molded rotor structures. In these designs, the traditional silicon steel magnetic bridge is replaced by a vacuum or air gap (0 mm width) within the injection-molded assembly. This modification increases the reluctance of the leakage path, resulting in a 25.3% reduction in the leakage flux coefficient, a 21.7% increase in electromagnetic torque, and a 10% improvement in power density.  Precision Alloy High Permeability Mu Metal Permalloy 80 Strip