Name: Custom Precision CNC Machined Magnesium AZ31B Motor Housing & Rotor Hub with ±0.01 mm Tolerance and High Vibration Damping
Brand: Shenzhen Jinyihe Technology Co., Ltd.
SKU: OEM/ODM
Price: 60.00 USD
Availability: InStock

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Custom Precision CNC Machined Magnesium AZ31B Motor Housing & Rotor Hub with ±0.01 mm Tolerance and High Vibration Damping

Magnesium AZ31B Motor Housing

±0.01 mm Tolerance Rotor Hub

High Vibration Damping CNC Machined Component

Place of Origin:

China

Brand Name:

JYH

Certification:

ISO9001,IATF1969

Model Number:

OEM/ODM

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Product Details

Tolerance:

±0.01 Mm

Processing Mothed:

CNC Machining

Material Type:

Magnesium Alloy AZ31B (Mg-3Al-1Zn)

Applicationindustries:

Aerospace, Automotive, Medical, Electronics

Washers:

Metal Parts

Applied:

Industrial Equipment

Turning Parts:

Non- Standard

Item:

CNC Precision Machining Part

Heattreatment:

Available Upon Request

Final Usage:

OEM , ODM

Minorderquantity:

1 Piece

Highlight:

Magnesium AZ31B Motor Housing

±0.01 mm Tolerance Rotor Hub

High Vibration Damping CNC Machined Component

Payment & Shipping Terms

Minimum Order Quantity

Packaging Details

Custom Packaging

Delivery Time

5-8 days

Payment Terms

L/C,D/A,D/P,T/T

Supply Ability

Prototype to Mass production

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Product Description

Custom Precision CNC Machined Magnesium AZ31B Motor Housing & Rotor Hub

Engineered specifically for weight-critical dynamic assemblies, this custom CNC machined Magnesium AZ31B motor endbell and stator housing provides an unmatched stiffness-to-weight ratio for unmanned aerial vehicles (UAVs), high-acceleration robotic joints, gimbal systems, and electric powertrain hardware.

Machined from wrought AZ31B tooling plate and bar stock using multi-axis CNC turn-mill and 5-axis simultaneous milling centers, this component features radial ventilation louvers, high-aspect-ratio weight reduction pockets, and precision-bearing bores held to tight geometric tolerances down to ±0.005 mm (±0.0002 in).

Magnesium AZ31B is approximately 33% lighter than aerospace Aluminum 6061-T6 and 77% lighter than steel, offering superior specific strength and exceptional mechanical vibration damping capacity. To guarantee reliable performance in high-speed rotational environments, each housing undergoes controlled multi-axis high-speed machining (HSM) with dedicated chip temperature controls, eliminating residual stress and thermal warpage across ultra-thin structural walls.

Technical Specifications

Parameter	Standard Capability / Specification	Engineering Notes
Material Designation	Magnesium Alloy AZ31B (Mg-3Al-1Zn)	High ductility, superior damping, non-magnetic
Machining Method	Multi-Axis Turn-Mill & 5-Axis Simultaneous Milling	Radial cooling slots & bearing datum cut in one clamping
Dimensional Tolerances	±0.010 mm standard; down to ±0.005 mm critical	CMM verified according to ISO 2768-m/f or ASME Y14.5
Concentricity & Runout	Within ∅0.008 mm (0.0003 in)	Critical for high-RPM motor dynamic balance
Bearing Bore Precision	ISO H6 / H7 clearance or press fit	Air-gauged for high-precision miniature bearing seating
Surface Finish (Machined)	Ra 0.4 μm−Ra 0.8 μm (16−32 μin)	Ultra-fine finishing passes on critical datums
Surface Treatment Options	Plasma Electrolytic Oxidation (PEO/Keronite), Chemical Conversion (Dow 7/17), Cerakote	Delivers high wear resistance, dielectric isolation, and salt spray protection
Quality Inspection	100% CMM, Optical Profile Projector, Dynamic Balancer	Material certs (EN 10204 3.1) and full ballooned inspection report

Material Performance Comparison: Magnesium AZ31B vs. Structural Alloys

When selecting materials for rotational hardware, drone propulsion, or portable robotics, specific strength (strength-to-weight ratio) and natural frequency damping dictate efficiency and thermal heat dissipation:

Metric / Alloy Property	Magnesium AZ31B	Aluminum 6061-T6	Aluminum 7075-T6
Density (ρ)	1.78 g/cm³ (Ultra-lightweight)	2.70 g/cm³	2.81 g/cm³
Yield Strength	150-200 MPa	276 MPa	503 MPa
Specific Strength (Sᵧ/ρ)	112 kN⋅m/kg	102 kN⋅m/kg	179 kN⋅m/kg
Damping Capacity	Exceptional (Absorbs high-RPM harmonics)	Moderate	Low
Machinability	Excellent (Lowest cutting force)	Very Good	Excellent
Weight Reduction Potential	Baseline (∼33% lighter than Al)	+51% heavier	+57% heavier
Primary Use Case	UAV motors, optical gimbals, robotic links	Housings, frames, thermal plates	Heavy-stress structural spars

Manufacturing & Engineering Highlights

Integrated Turn-Mill Production: The outer radial air passages, locating pilot steps, and concentric fastener patterns are machined in unified operations to minimize cumulative runout errors between dynamic and static features.
High Vibration Damping: The atomic lattice structure of AZ31B magnesium absorbs mechanical vibration and acoustic resonance, protecting high-speed ball bearings from premature fatigue failure during rapid acceleration cycles.
Corrosion Protection Engineering: Because magnesium is galvanically active, parts are prepared with specialized surface treatments—such as Plasma Electrolytic Oxidation (PEO) or high-grade aerospace Cerakote—to provide robust barrier isolation against moisture, salt spray, and galvanic coupling with steel fasteners.
Fire Safety & Tooling Discipline: Machined under strict fire-safe protocols utilizing dedicated sharp-carbide tooling, controlled chip clearing, and specialized synthetic oil-based or inert blast coolants to prevent micro-ignition of magnesium fines.

Production Verification Checklist for Inquiries

Submit 3D CAD models (.STEP, .STP, or .IGES) and a companion 2D drawing highlighting bearing bore diameters, concentricity callouts, and GD&T datums.
Specify environmental coating requirements (as-machined with anti-corrosion oil, chemical conversion coating, PEO, or exterior Cerakote thin-film ceramic).
Identify hardware interface specifications (e.g., clearance holes for stainless screws, threaded holes requiring Helicoil/wire thread inserts to prevent galvanic corrosion).
Outline your production milestones: rapid pilot samples (1-10 pcs) vs. serial manufacturing volumes (100-10,000+ pcs).

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