OpeningYour drawing defines the part. Our job is to hit the numbers on it. We machine bonded fin aluminum heatsinks to your exact print, then verify every critical dimension before the crate leaves ou
Your drawing defines the part. Our job is to hit the numbers on it. We machine bonded fin aluminum heatsinks to your exact print, then verify every critical dimension before the crate leaves our floor. No surprises at incoming inspection.
At a glance: Bonded fin assembly tolerance ±0.05 mm. Standard lead time 15 working days. No MOQ. Prototype to production in one facility.
| Parameter | Value |
|---|---|
| Base Material | Aluminum 6063-T5, 6061-T6, or 1050 per drawing |
| Fin Material | Aluminum 1100 or 6063, thickness 0.5–3.0 mm |
| Fin Pitch | 2.5 mm minimum, up to 15 mm |
| Fin Height | Up to 200 mm, bonded or epoxy-free mechanical lock |
| Base Thickness | 3.0–50.0 mm |
| Bonding Method | Epoxy structural adhesive (thermal grade) or mechanical stake |
| Machining Tolerance | ±0.05 mm on critical mounting surfaces |
| Flatness | 0.05 mm over 100 mm length |
| Surface Finish | Clear anodize, black anodize, or as machined (Ra 1.6 µm) |
| CNC Capability | 3-axis and 4-axis vertical machining centers |
| Max Part Size | 800 mm x 600 mm x 300 mm |
| Batch Size | 1 piece to 100,000 pieces per year |
| Inspection | CMM report, surface roughness check, dimensional report per batch |
| Lead Time | 15 working days for prototypes, 20–25 for production runs |
We use 6063-T5 for most extrusions because it balances thermal conductivity and machinability. If your design needs higher strength, we switch to 6061-T6. Fin bonding is done with thermal-grade epoxy rated for continuous operation up to 150°C. For higher temperatures, we use mechanical stake bonding with no adhesive.
1. Batch-traceable quality. Every heatsink gets a unique batch number. We record material lot, machine operator, tooling used, and inspection results for that batch. If you find an issue six months later, we can trace it back to the exact pour and shift. This is standard, not a premium service.
2. Inspection report per batch. You get a dimensional report with actual measured values, not just a pass/fail stamp. We measure critical features like mounting hole positions, fin spacing, and base flatness on every batch. CMM data is included for complex geometries. You can file this report with your own QA without re-measuring everything.
3. One factory for CNC, stamping, springs, and heatsinks. Your assembly might need a stamped bracket, a compression spring, and a machined heatsink. We make all of them under one roof. That means one purchase order, one shipping date, and one quality system. No coordinating three suppliers across time zones.
Bonded fin aluminum heatsinks handle high heat flux in constrained spaces. You will find them in:
If your application runs hot and the space is tight, bonded fins are usually the answer.
Looking for a different part? We also machine Custom Aluminum Extrusion Heat Sink Profiles | Precision Manufacturing No MOQ in the same Dongguan factory.
Q: Is there really no MOQ? A: Correct. We make one prototype or one million pieces. The unit price for a single piece is higher because setup and programming dominate the cost. Once you move to production quantities, pricing drops significantly. We quote per drawing, so send yours for an exact number.
Q: How do you guarantee tolerance and quality? A: We inspect every batch with calibrated equipment. Critical dimensions are measured on a CMM. Surface finish is checked with a profilometer. We send you the inspection report with the shipment. If a part is out of tolerance, we replace it at no cost. Our defect rate over the last five years is below 0.3%.
Q: What is the lead time for custom heat sinks? A: Prototypes take 15 working days from drawing approval. Production runs take 20–25 working days depending on quantity and surface treatment. Anodizing adds 3–5 days. We can expedite prototypes to 7 working days for an additional fee.
Q: Can you provide material certificates? A: Yes. Every aluminum lot comes with a mill certificate showing chemical composition and mechanical properties. We also provide RoHS and REACH declarations on request. For aerospace or medical applications, we can supply full traceability documentation.
Email your PDF or STEP file to sc@bquq.com. Include your target quantity, required surface treatment, and any critical tolerances. We will reply with a firm quote within 12 hours. For urgent inquiries, message us on WhatsApp at +86 13713157787.
Precision manufacturing is our baseline. Custom heat sinks made in China with no MOQ and full traceability. Send the drawing. Get the quote.
| Parameter | Capability |
|---|---|
| Materials | AL6063/6061/5052, pure copper C1100, copper-aluminum composite |
| Process | Extrusion, CNC machining, skiving, forging, die casting, stamping fins |
| Fin Types | Extruded, pin fin, skived, folded, bonded, heat pipe, vapor chamber |
| Surface | Black anodizing, clear anodizing, nickel plating, powder coating |
| Size Range | Max 1500 x 400 x 300 mm |
| Thermal Test | Thermal resistance and heat dissipation data per batch |
| Prototype | 5-7 days, no MOQ on samples |
| Inspection | CMM, thermal resistance tester, full report per batch |
