## Opening Your drawing is the starting point. We machine the aluminum heat sink exactly to your print—every fin, every hole, every chamfer. Before shipment, each part is verifie
Precision CNC Machined Aluminum Heat Sinks | Custom Made in China
## Opening Your drawing is the starting point. We machine the aluminum heat sink exactly to your print—every fin, every hole, every chamfer. Before shipment, each part is verified on a CMM and check
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Your drawing is the starting point. We machine the aluminum heat sink exactly to your print—every fin, every hole, every chamfer. Before shipment, each part is verified on a CMM and checked against your tolerances. No surprises.
Tolerance: ±0.01 mm on critical features
Lead time: 7–12 days for prototypes, 15–20 days for production runs
No MOQ: one piece or ten thousand, same process control
Surface finish: as machined, anodized, or powder coated
Specifications
We run a dedicated CNC line for aluminum heat sinks. All parts are machined from solid billet or bar stock. No castings, no shortcuts.
Parameter
Value
Materials
6061-T6, 6063-T5, 5052, 7075-T6, or your specified alloy
Machines
3-axis and 5-axis CNC mills, 4-axis machining centers
Max part size
1200 mm x 800 mm x 500 mm
Tolerance
±0.01 mm standard; ±0.005 mm on request
Fin thickness
0.8 mm minimum (dependent on height-to-width ratio)
Fin height
Up to 80 mm in a single pass
Surface finish
Ra 0.8 µm as machined; anodize (clear, black, or custom color)
Batch size
1 to 50,000+ pieces
Inspection
CMM full report, surface roughness tester, alloy verification
Lead time
7 days for prototypes; 15–20 days for production
We hold the same tolerance whether you order one prototype or a full production batch. Tool paths are optimized per geometry to avoid burrs on fin edges and to maintain consistent thermal contact surfaces.
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Every heat sink gets a unique serial number. We record the machine, the operator, the tool offsets, and the inspection results for that part. If you need to trace a defect back to a specific batch, we can do it in minutes. This is precision manufacturing, not guesswork.
2. Inspection report per batch.
You get a full dimensional report with every shipment. This includes CMM data on critical features, surface finish readings, and material certificates. No extra charge. Our QC team signs off on each batch before it leaves the factory. If a dimension is out of spec, we rework it before you ever see it.
3. One factory for CNC + stamping + springs + heat sinks.
Your assembly might need a stamped mounting bracket, a spring clip, and a machined heat sink. We make all of them under one roof. That means one purchase order, one quality system, and one shipping schedule. You save on logistics and avoid tolerance mismatches between parts from different suppliers.
Where these parts are used
CNC machined aluminum heat sinks are not for high-volume consumer parts. They are for applications where performance and reliability matter more than unit cost.
Power electronics: IGBT modules, rectifiers, and motor drives that generate high heat density. The machined base ensures a flat mounting surface for maximum thermal transfer.
LED lighting: High-bay fixtures, stadium lights, and automotive headlamps. Machined fins allow precise optical alignment and airflow control.
Telecom equipment: Base stations and 5G remote radio units. The tight tolerances ensure proper sealing and consistent thermal performance across units.
Medical devices: Laser systems and diagnostic equipment where the heat sink must fit into a compact, precisely machined enclosure.
Custom prototypes: R&D labs testing new thermal designs. We machine complex fin geometries that cannot be extruded or cast, so you can validate your design before committing to a production process.
Q: What is your MOQ?
A: No MOQ. We accept orders for a single prototype. The process setup is the same regardless of quantity, so we quote per piece based on your geometry and tolerance. Custom CNC machining does not require minimum volumes.
Q: How do you guarantee tolerance and quality?
A: We use in-process probing on the CNC machines to verify critical dimensions before the part is finished. After machining, a CMM inspection verifies the final geometry. Every batch ships with a dimensional report. If a part fails inspection, it is scrapped or reworked—never shipped.
Q: What is the typical lead time?
A: Prototypes ship in 7–12 days from drawing approval. Production runs take 15–20 days, depending on quantity and surface treatment. Anodizing adds 3–5 days. We provide a firm schedule with your quotation and update you weekly.
Q: Do you provide material certificates?
A: Yes. Every batch includes a mill certificate for the aluminum alloy. We also provide chemical composition and mechanical property reports on request. This is standard for our precision manufacturing process, especially for aerospace or medical buyers.
Send your drawing
Email your 2D or 3D drawing to sc@bquq.com. Include your target quantity, required tolerance, and surface finish. We reply with a firm quote within 12 hours. For urgent inquiries, WhatsApp us at +86 13713157787.
We are a made in China factory with 20 years of export experience. Your drawings are protected under NDA. No MOQ, no minimum order value—just precise, traceable parts. Send your drawing today and get a quote tomorrow.
