Product Overview
Sunflower aluminum heatsink is an extruded round profile with radial fins spreading from a center bore — 360-degree cooling in a compact cylindrical form for LED lamps, drivers and small motors.
Extruded in 6063 alloy with excellent thermal conductivity, the profile is cut to length, machined and finished (natural, black anodized) in our factory. Custom die designs are available from your drawings.
Key Features
- 360° cooling — radial fins cool from every direction
- Center bore — fits cables, LED modules or shafts
- 6063 alloy — thermal conductivity ~200 W/mK
- Cut to length — any length with CNC machining options
- Custom dies — new profiles from drawing in 10-15 days
Application Scenarios
Sunflower heatsinks cool cylindrical electronics:
- LED high-bay & street lights — driver and lamp head cooling
- Power supplies — compact convection cooling
- Electric motors — cylindrical housing cooling
- Audio amplifiers — passive cooling for Class-D stages
Configuration Options
- Alloy — 6063-T5
- Outer diameter — 50-300 mm by die
- Fin tip — 0.8-1.5 mm
- Finish — natural / black anodized
- Machining — drilling, tapping, CNC facing
- Length — cut to spec
Product Specifications
| Alloy | 6063-T5 |
| Conductivity | ~200 W/mK |
| OD range | 50-300 mm |
| Finish | anodized 8-15 um |
| Tolerance | GB/T 6892 high precision |
| Certificates | ISO 9001 / SGS |
All products are manufactured in our ISO 9001 certified factory and carry CE / SGS certification. Custom requirements are welcome.
Quality Certifications
Ruhai Material is ISO 9001 certified and ships products compliant with CE and SGS requirements worldwide. Material certificates and test reports are available with each shipment.
Frequently Asked Questions
What is the MOQ?
MOQ is 200 kg per profile; samples from stock dies ship fast.
Can you make my own profile?
Yes, send a drawing or sample; new die lead time is 10-15 days with die cost credited on volume.
What is the lead time?
7-15 working days for stock dies; 15-25 days for new dies.
Do you machine the parts?
Yes, CNC drilling, tapping and facing are available.
Which finish is better for cooling?
Black anodized radiates about 5-10% better than mill finish; we advise per your application.
Request a Quote
Send us your specifications, quantity and target port — our sales team replies within 24 hours with a detailed quotation. Send an inquiry now.
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