Machined Aluminum Heatsink

Precision-Machined Aluminum Heatsinks — Accuracy Meets Performance

CNC precision, premium alloys, and custom geometries — engineered for performance-critical electronics, optics, and industrial systems.

🔷Product Overview

  • Machined aluminum heatsinks are created from solid aluminum blocks, extrusions, forged, etc, using CNC milling, turning, or drilling.
  • This method delivers precise dimensions, smooth surface finishes, and the flexibility to integrate mounting holes, slots, or complex profiles.
  • Perfect for applications where thermal performance and fit accuracy are critical.

🔷Features

  • Unmatched precision — tight tolerances for exact fit and thermal contact.
  • Complex geometries — shapes not possible with extrusion or stamping.
  • Small to medium volumes — cost-effective for prototypes and specialty runs.

🔷Technical Specifications

  • Material: AL6061-T6, AL6063-T5, 1070, ADC12, as your request.
  • Tolerances: ±0.05 mm typical (tighter available)
  • Fin thickness: ≥1 mm (CNC dependent)
  • Finish options: Anodizing, chromate conversion, plating, painting

🔷Machining type

Machining TypeDescriptionTypical ApplicationsTypical Tolerance*
Drilling HolesCreating through-holes or blind holes; can be countersunk or counterbored.Mounting to PCBs, housings, brackets±0.05–0.1 mm
Tapping (Thread Cutting)Cutting internal threads into drilled holes (metric or imperial sizes).Screw mounting points, mechanical assembly±0.05 mm (thread pitch)
Milling (Slotting/Pocketing)Removing material to form slots, pockets, or contours via CNC milling.Airflow channels, component clearance±0.05 mm
Turning (Lathe Machining)Rotating part shaping for cylindrical designs.Round LED housings, motor cooling parts±0.05 mm diameter
Surface FacingFlattening base or top surfaces for smoothness and flatness.Thermal interface base, assembly surfacesFlatness ≤0.05 mm
Chamfering & DeburringBeveling edges and removing burrs.Safety edges, assembly-friendly designs±0.1 mm
CounterboringFlat-bottom recess for bolt heads below surface.Concealed fastening±0.05 mm
CountersinkingConical recess for flush-fitting screws.Flush mounting of flat-head screws±1° angle tolerance
Thread MillingMilling threads with high precision.Large-diameter or special threads±0.05 mm
Keyway & Groove CuttingCreating alignment slots or mechanical keyways.Rotating assemblies, precision alignment±0.05 mm
Custom Fin ShapingAdjusting fin height, thickness, or angles.Optimized airflow, reduced weight±0.05 mm
Pocket MillingCreating recessed cavities for components.Sensor integration, thermal pads±0.05 mm
Engraving / MarkingPermanent marking with CNC or laser.Logo, part number, serial code±0.1 mm
Surface TexturingMicro-grooves or patterns for heat or coating benefits.Enhanced emissivity, coating adhesion±0.05 mm depth
Assembly Features MachiningMachining snap-fit tabs, pins, interlocks.Modular heatsinks, quick assembly±0.05 mm
Heat Pipe IntegrationSlots/holes for embedded heat pipes or vapor chambers.High-power cooling systems±0.05 mm

🔷Applications

  • High-power LEDs
  • RF & microwave devices
  • Industrial automation systems
  • Aerospace & defense electronics
  • Laboratory instrumentation

🔷Custom Order & Contact

  • Custom Manufacturing to Your Specifications
    Our engineering team works closely with you. We ensure precise dimensions and optimal thermal performance. We also focus on cost-effective production.
  • Send us your requirements today, and we’ll provide a tailored solution and competitive quotation.