Xiamen Hitech Magnetics Co., Ltd. is one of the leading manufacturers and suppliers of custom electromagnetic coil assembly for frameless torque motors in China, also supports customized service. We have world-leading production equipment and strong manufacturing capabilities. Please feel free to buy bulk advanced custom electromagnetic coil assembly for frameless torque motors from our factory.
Most motor builders and robotics integrators face a familiar bottleneck when sourcing stator assemblies: coordinating one factory for silicon steel stamping, another for slot insulation or PTFE coating, a third for precision copper winding, and a fourth for vacuum epoxy potting. When a tolerance stacks up incorrectly or a winding fails high-voltage insulation testing, identifying the responsible vendor delays development by weeks. HIMAGNET eliminates this friction by delivering complete, closed-loop electromagnetic coil assemblies manufactured under one roof from raw lamination to final potted stator component.
Integrated Closed-Loop Manufacturing
Our stator coil assembly process integrates all critical production stages in-house to guarantee mechanical precision and electrical reliability:
- Silicon Steel Core Stacking: High-grade silicon steel laminations processed via precision stamping and wire EDM, supporting both bonded and interlocked stacking to minimize eddy current losses.
- Engineered Insulation: Flexible insulation solutions tailored to your dielectric requirements, including PTFE (fluoropolymer) coating, electrostatic epoxy powder coating, and precision-fitted slot insulation liners.
- Precision Winding: High-fill-factor automated and semi-automated copper wire winding, engineered for uniform tension, precise turn count, and optimal thermal dissipation.
- Vacuum Epoxy Potting: In-house encapsulation using high-thermal-conductivity epoxy resin, cured under vacuum to eliminate air voids, seal against moisture and harsh chemicals, and provide outstanding structural damping against vibration.
Applications and System Integration
While we specialize in custom electromagnetic assemblies rather than standard off-the-shelf catalog parts, our potted stator coils are commonly integrated into high-performance motion applications:
- Frameless Torque Motors: Direct-drive stator assemblies paired with permanent magnet rotors for high torque density at low rotational speeds.
- Robotic Joint Actuators: Ultra-compact, low-profile coil assemblies for collaborative robot (cobot) joints and industrial robotic arms.
- AGV and Mobile Robotics: Ruggedized in-wheel motor stator components engineered to withstand continuous shock, vibration, and dynamic loads.
- Direct-Drive Rotary Tables: Precision indexing tables, semiconductor handling equipment, and CNC rotary axes requiring zero-backlash direct coupling.
Note: HIMAGNET supplies the customized stator coil component and permanent magnet materials; we do not provide complete enclosed motor housings, bearings, or servo drive electronics.
Customization Capabilities & Specifications
Every project begins with your 2D drawings, 3D CAD models (STEP/IGES), and target electrical specifications. We support comprehensive tailoring across the following parameters:
| Parameter | Customization Range & Options |
|---|---|
| Core Material | Silicon Steel (0.1mm, 0.2mm, 0.35mm, 0.5mm lamination thickness), Bonded or Stamped |
| Insulation Class | Class F (155°C), Class H (180°C), Class 200°C+ via PTFE / High-Temp Epoxy |
| Wire Specifications | High-grade enameled copper wire, dual-coated, customized wire gauge and winding pattern |
| Encapsulation | Thermally conductive vacuum epoxy potting (black, natural, or custom color) |
| Dimensional Tolerance | Machining precision up to ±0.05 mm or per drawing requirement |
| Sensors & Terminations | Integrated thermistors (PT100, PT1000, NTC, PTC), customized lead wires and connectors |
Quality Inspection & Reliability Assurance
All electromagnetic coil assemblies undergo rigorous in-process and end-of-line quality verification before packaging, including DC resistance and inductance testing, Hi-Pot dielectric withstand verification, and 3D CMM dimensional checks.
Common Questions
What CAD formats and information do you need to provide a quote?
We recommend providing 2D engineering drawings (PDF/DWG) with tolerance callouts along with 3D CAD models (STEP/IGES), electrical target parameters, and estimated annual batch volume.
Can we order prototype samples before committing to mass production?
Yes. We actively support R&D prototyping and pilot batch validation. Sample lead times typically range from 10 to 15 working days following drawing confirmation.
Do you supply permanent magnet rotors to match the stator coil assembly?
Yes. As an established magnet manufacturer, HIMAGNET provides matched sintered NdFeB arc segments or rotor assemblies for direct-drive pairing.
What quality management certifications govern your manufacturing?
Our facility operates under an ISO 9001 certified quality system, and all materials used comply with RoHS, REACH, and UL flame-retardant standards.
Brand: HIMAGNET
Product Name: Custom Electromagnetic Coil Assembly (Stator Component)
Core Material: Silicon Steel Lamination (Bonded / Stacking)
Winding Material: Precision Enameled Copper Wire
Insulation Treatment: PTFE Coating / Epoxy / Powder Insulation (Customizable)
Potting Material: In-House High Thermal Conductivity Epoxy Potting
Dimensional Tolerance: ±0.05mm or per customer drawing
Dimensions: Fully Customized to CAD Drawings
Place of Origin: Fujian, China
Quality Standards: ISO 9001, RoHS, REACH, UL Compliant
Lead Time: 20-35 Days (Samples: 10-15 Days)
MOQ: Flexible MOQ / Small Batch & Prototyping Supported
Application: Frameless Torque Motors, Direct Drive Motors, Robot Joints, AGV Drive Units, Rotary Tables
Supply Scope: Stator / Coil Component Assembly (Excluding full motor housing or drive electronics)
Custom Service: In-House Core Stacking, Insulation, Winding & Potting Integration (OEM/ODM)
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