Custom CNC Machined Aluminum Outrunner Brushless Motor Bell Housing & Rotor Sleeve & Rotorbuchse for 4320 FPV UAV Drone Motor
Product Description:
Designed for high-performance, heavy-load drone operations, this 4320 brushless motor for 15-inch FPV drones delivers exceptional power, efficiency, and reliability. Suitable for 15-inch and 18-inch FPV and industrial drones, the motor features a CNC-machined aluminum alloy housing that ensures excellent structural stability, optimal heat dissipation, and extended service life.
Its large 43mm stator diameter and 20mm stator height deliver high torque, making it an ideal choice for carrying heavy payloads such as professional cameras, sensors, and industrial equipment. The outer rotor design enhances heat dissipation efficiency and power output, ensuring stable operation even under harsh flight conditions.
Manufactured using high-quality materials and precision machining processes, this motor operates smoothly with minimal vibration and high flight efficiency. It is well-suited for applications including aerial photography, surveying, mapping, inspection, and long-endurance missions.
Features:
- Optimized for 15-inch and 18-inch FPV drones and industrial drones
- Features a high-torque 4320 stator configuration for exceptional load-bearing capacity
- CNC-machined aluminum alloy housing ensures durability and excellent heat dissipation
- High-efficiency brushless outrunner design guarantees stable and reliable operation
- Suitable for extended flight times and operation in harsh environments
- Custom manufacturing services available for OEM/ODM projects
Applications:
Widely used in the manufacturing of FPV drones, drone motors, aerospace components, robots, precision machinery, and custom mechanical parts.
Product Parameters:
| Brand | Kzron | Product Name | Drone Motor Cap |
| Drone motor size | 4320、4215 | Machinable Material | 6061 \ 7050 Aluminum Alloy |
| Machinable Thread Diameter | 300mm((Customizable ) | Machinable Thread Depth | 30 |
| Surface Treatment Process | Sandblasting, Anodizing | Minimum Machinable Wall Thickness | 0.5 |
| Custom Tolerance Support | Supported | Prototype Lead Time | 1-3 days |
| Production Lead Time | 8-15 days | Dimensional Accuracy | 0.01-0.05mm |
| Maximum Machining Size | Customizable (mm) | Factory Location | Dongguan City |
| Product Color | Black | Machining Type | Turning |
| Minimum Machining Size | 0.1 | Machinable Hole Diameter | 200 |
| Application Field | Drone/Aircraft Parts, Machinery Industry / Connectors, Fasteners Manufacturing / Special-shaped Parts Processing | Machinable Surface Roughness | 3.2 |
Kzron CNC Machining Process Video:
Custom CNC Machined Aluminum Outrunner Brushless Motor Bell Housing & Rotor Sleeve & Rotorbuchse for 4320 FPV UAV Drone Motor
Product photos:



Product Applications:







What materials can you machine?
Kzron is a professional OEM/ODM CNC machining factory. We ship up to 500,000 parts per month and operate a facility equipped with over 100 machines, supported by comprehensive production and quality control systems. We can machine the following materials:
Aluminum Alloys: Common grades include 6061, 7075, and 5052. These materials are lightweight, high-strength, and offer excellent thermal and electrical conductivity.
Stainless Steel: Grades such as 303, 304, and 316, which offer high strength, high corrosion resistance, and high toughness, making them suitable for heavy-duty machining.
Copper/Brass/Bronze: These materials have excellent electrical and thermal conductivity and are suitable for electrical and decorative parts.
Steel/Carbon Steel: Grades such as 1018 and 1045, which offer high strength at a moderate cost.
Titanium Alloys: High strength, lightweight, resistant to high temperatures and corrosion, commonly used in demanding industries such as aerospace.
Do you offer OEM services?
We have professional design engineers who can design or modify drawings according to your requirements. We can produce according to your specifications, support sample production with fast turnaround and short lead times, and offer high-quality, low-cost mass production with quick delivery.
What is your minimum order quantity?(MOQ)
At Kzron, customer needs are our top priority. We accept orders starting from a single piece, with no minimum quantity requirement.
Company Information:
Kzron is a precision parts manufacturing company. Established in 2010, Kzron is a long-standing manufacturer that provides customers with one-stop custom precision parts manufacturing services.
The company main products include drone components, drone motor parts, agricultural drone components, precision electronic device components, educational device enclosures, aviation equipment components, precision automotive custom parts, smart home components, and industrial non-standard custom parts. Through its one-stop machining services, the company can meet all customer needs from concept design to finished product delivery.
The company possesses robust production capabilities, including over 10 production lines featuring CNC machining centers, high-gloss finishing machines, CNC lathes, sheet metal fabrication, stamping, and welding, with a total of more than 200 machines. Among these, there are over 100 CNC machining centers from manufacturers such as Brother (Japan), Haas (USA), and Taiwanese brands.



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