Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Motor Magnetic Assemblies
Motor Magnetic Assemblies
Custom BLDC, PMSM, and stepper rotor assemblies. 100% flux tested, production-ready precision components.
Rotor + Back-Iron + Magnets
100% Flux Tested
BLDC / PMSM / Stepper
Epoxy or Press-Fit
±0.02mm Concentricity
Complete Magnetic Rotor Assemblies, Ready to Install
✔ NdFeB or Ferrite options
✔ Steel back-iron machining
✔ Concentricity ≤0.02mm TIR
✔ 100% torque constant test
✔ Epoxy or press-fit assembly
✔ Pre-magnetized delivery
Precision Manufacturing Process
01
Magnet Prep
02
Back-Iron Prep
03
Cleaning
04
Epoxy Dispensing
05
Placement & Fixture
06
Curing
07
Concentricity Check
08
Magnetization
09
Flux Map
10
Inspection
11
Packaging
12
Delivery
Technical Specifications
| Parameter | Capability Range |
|---|---|
| Magnet Material | Sintered NdFeB, SmCo, Ferrite, Bonded NdFeB |
| Max Diameter | 350 mm |
| Min Diameter | 2 mm |
| Shaft Concentricity | ≤ 0.02 mm (TIR) |
| Bond Method | Structural Epoxy, Press-Fit, Overmolding |
| Pole Count | 2 to 128 Poles |
| Flux Uniformity | ± 1.5% |
| Test Coverage | 100% Flux Mapping & Torque Testing |
Physical Specifications
| Component | Standard Materials |
|---|---|
| Rotor Hub / Back-Iron | 1010/1018 Steel, Stainless 416, Aluminum 6061 |
| Sleeving / Retention | Carbon Fiber, Stainless 304, Inconel 718 |
| Surface Treatment | Nickel, Epoxy Coating, Passivation, Zinc |
Applications
BLDC Hub Motors
High-torque direct drive rotors for electric mobility.
PMSM Servo Rotors
Precision motion control for industrial robotics.
Drone & UAV Motors
Ultra-lightweight high-speed rotors for flight systems.
EPS Automotive
Reliable power steering motor assemblies.
Pump Rotors
Sealed magnetic couplings for leak-proof fluid handling.
Washing Machines
Direct drive drum motor assemblies for home appliances.
Why Elite Magnets?
⚙
One-Stop Assembly
We handle machining, magnets, and assembly in-house.
📊
100% Tested
Every rotor is flux mapped for performance verification.
📐
Design Support
FEA simulation and DFM consulting for your motor design.
🏭
Factory Direct
Direct communication with engineers and competitive pricing.
Frequently Asked Questions
Do you supply shaft machining?
Yes, we provide full CNC machining for shafts and back-irons to ensure perfect fit and concentricity.
Can you magnetize after assembly?
Yes, post-assembly magnetization ensures higher flux density and better pole-to-pole consistency.
What adhesive systems do you use?
We use high-temperature structural epoxies (up to 200°C) tailored to your specific environment.
What concentricity tolerance can you hold?
Our standard is ≤0.02mm TIR, but we can achieve tighter tolerances depending on the design.
Do you provide FEA support?
Yes, we offer magnetic field simulation and FEA analysis to optimize your rotor’s performance.
ISO 9001:2015
RoHS Compliant
REACH Certified
100% COA
Ready to Start Your Project?
Send us your drawings or specifications for a technical review and quote.