Custom Heatsinks Matched to Your Application
From LED lighting and power electronics to industrial equipment,
we match heatsink material, dimensions and mounting details to
your application and assembly drawing.
- LED, Power Electronics & Industrial Applications
- Aluminum & Copper Material Options
- Drawing-Matched Dimensions & Mounting
- OEM & ODM Supply
Shanghai Glary: Heat Sink Manufacturer Since 2009
- Engineer Drawing Review Before Tooling
- Multiple Materials & Manufacturing Processes
- 2 m Minimum Order for Custom Extruded Heatsinks
- 12 extrusion lines: 600–4,000 tons; profiles up to Ø400 mm round / 450 mm wide / 7,000 mm long
- 10 cold-forging lines: 300–5,000 tons; custom pin-fin heatsinks evaluated up to Ø400 mm
- 10 die-casting lines: 280–630 tons
- 3-, 4- and 5-axis CNC machining
- ISO 9001 and SGS material report
Heat sink by Material and Application
By Material
Aluminum Heat sink
Aluminum suits weight-conscious designs; section shape, fin geometry, cut length and mounting details as your drawing.
Copper Heat sink
For copper designs, GLARY matches the base footprint and contact face to the component, while accounting for the specified mass.
By Application
CPU heatsink
The base footprint, retention-hole pattern and socket clearance determine fit around the processor and neighboring components.
Electronic heat sink
Contact pads align with board-mounted power devices; edge clearances protect adjacent components and the equipment enclosure.
LED heatsink
The LED board contact area, optic clearance and housing attachment define the interface between the light source and fixture.
MOSFET heatsink
Device-pad locations, screw or clip access and PCB clearances shape the interface for single or grouped MOSFETs.
Solid state relay heatsink
Relay base dimensions, module spacing and panel fixing points determine how the relays mount against the heatsink.
Transistor heat sink
Package tab, mounting screw and lead clearance set the contact area and board-side fit for transistor devices.
Industrial heat sink
Machine mounting faces, heat-source locations and fan or duct direction determine section orientation and fin clearance.
Motor heatsink
Mounting points follow the motor housing; fin orientation and end clearance are checked against the motor assembly.
Heat Sinks by Manufacturing Methods
Custom aluminum heat sinks manufactured using extrusion, skiving, cold forging, CNC machining, heat pipe integration, and die casting.
Extruded Heatsink
Straight-fin, linear, wide and constant-cross-section designs for efficient repeat production.
Forged Heatsink
Integrated pin-fin or radial-fin structures for compact designs and multi-directional airflow.
Machined Heat Sink
Prototypes, low-volume parts and heat sinks with complex local machining features.
Die Cast Heat Sink
Complex three-dimensional shapes and integrated thermal housings.
Skived Heat Sink
Thin, closely spaced fins where high fin density is required in limited space.
Stamped Heat Sink
Sheet-metal heat sinks with punched holes and formed tabs for component mounting.
Heatpipe Heatsink
For transferring heat away from the source where a larger cooling area is needed.
Choose the Right Heat Sink Process
GLARY reviews your drawing, material and order quantity to confirm the manufacturing route and whether existing tooling can be used. New tooling costs are quoted separately, with the required secondary machining listed in the quotation.
Custom Heatsinks for OEM Components and Equipment
GLARY makes custom heatsinks for OEM assemblies to your approved drawing or design. We handle the required production, CNC machining and surface finishing, delivering completed parts to the agreed specification and ready for assembly.
Heatsink Features Made to Fit Your Assembly
Heat Sink Fin Design That Clears Nearby Components
Fin height and spacing can accommodate nearby connectors, cables and enclosure walls while leaving room for airflow. Local fin cutouts provide access to mounting screws where a full-height fin would obstruct assembly.
Heatsink Mounting Points Matched to Your Components
Mounting holes, threads and counterbores match your component and bracket drawings, so fixing points line up during assembly. Machined contact faces meet specified flatness and surface finish requirements for consistent seating against the heat source.
Heat sink Project Cases
Pin Fin Heatsink
GLARY produced a Ø120 mm cold forged heatsink for a lighting fixture assembly. The integrated base and pin fins were followed by CNC machining to complete the mounting features.
- Diameter: Ø120 mm
- Process: Cold forging with an integral base and pin fins
- Machining: Mounting features for the lighting assembly
Round Heatsink
This Ø101 mm round heatsink provides a circular profile for assemblies with a defined diameter limit. The project page shows the product configuration for reference.
- Diameter: Ø101 mm
- Shape: Round heatsink profile
- Project reference: Product images and available specifications
Large heat sink
GLARY supplied a Ø240 mm aluminum heatsink with a machined mounting plate. The extruded body was cut to height, then CNC-machined to complete the mounting face, holes and threads.
- Material: 6063-T5 aluminum
- Dimensions: Ø240 mm OD × Ø51 mm ID × 80 mm height
- Machining: Mounting face, drilled holes and tapped features
Finned heatsink
GLARY supplied extruded fin sections and a matching stamped plate as one assembly for industrial equipment. Cutting, CNC machining and black surface finishing were completed before assembly.
- Components: Extruded fin sections and a stamped plate
- Processing: Cutting and CNC machining
- Delivery: Black-finished parts assembled together
Heat sink assembly
GLARY combined an Ø89 mm extruded spotlight heatsink with a separately CNC-machined aluminum mounting component. Both parts were black anodized before final assembly.
- Heatsink body: Ø89 mm aluminum extrusion
- Mounting component: CNC-machined aluminum
- Finishing and assembly: Black anodizing followed by component assembly
Quality Control, Assembly and Delivery
Finished heat sink components are inspected according to the drawing, approved sample and final assembly requirements before shipment.
1. Dimensional Inspection
Overall dimensions, cut length, mounting surfaces, holes, threads, slots and other machined features are checked according to the drawing.
2. Fin and Structural Condition
Fin formation, spacing, damage, deformation and critical structural features are checked after the main production process.
3. Surface Appearance
Anodizing, coating, visible surfaces, contact points and batch appearance are checked according to the agreed finish requirement.
4. Assembly Fit
Where assembly is required, end plates, hardware, inserts and other components are checked for fit and function before packing.
5. Protective Packing
Heat sink components are separated and protected according to their size, surface finish and transport requirements.
Certifications and Quality Documents
Common Heat Sink Project Questions
Can GLARY review an incomplete drawing for a custom heatsink?
Yes. A sketch, partial 2D drawing or 3D model is enough to begin. GLARY will identify the missing dimensions or specifications to confirm before quotation.
How does GLARY choose among heatsink manufacturing methods?
GLARY checks which method can form the required section and fin structure while meeting the specified material and machining needs. The selected method is confirmed before tooling is ordered.
Can GLARY match a heat sink to my heatsink mounting bracket?
Yes. Send the bracket drawing or the mating-face, hole-pattern and clearance dimensions. GLARY checks this interface against the heatsink design before machining.
What information should I provide for a heatsink cost quotation?
Send a 2D or 3D drawing, material, finish, key tolerances and estimated order quantity; annual demand is helpful if available. GLARY reviews the tooling and machining scope before preparing the quotation.
What is the MOQ for custom heatsinks?
For custom extruded heatsinks, the MOQ is 2 linear meters of profile. The MOQ for cold-forged, die-cast and stamped heatsinks depends on the part and tooling requirements; new extrusion tooling is quoted separately.
How are samples and production scheduled?
Typical lead times are 15–20 days for new tooling, 7–15 days for samples after tooling is ready, and 30–45 days for production. GLARY confirms the schedule against the selected process and production plan.
Need a Custom Heat Sink?
From engineering support to volume production, Glary provides custom heat sinks according to your drawings and specifications.
Heatsink Basics for OEM Product Design
What is a heatsink
A heatsink absorbs heat from a component and transfers it to the surrounding air. Its base contacts the heat source, while fins increase the surface area available for cooling. Heatsinks are commonly used on LEDs, power transistors and other components that would otherwise run too hot.
Copper heatsink vs aluminum heatsink
Copper conducts heat better than aluminum, making it useful for spreading heat from a small, concentrated source. The trade-offs are greater weight and higher material cost.
Aluminum weighs roughly one-third as much as copper and can be extruded into profiles with an integral base and fins. It is a practical choice for large heatsinks and assemblies with weight or cost limits.
Choose aluminum when a suitable profile can meet the cooling requirement within the available space. Consider copper when heat needs to spread quickly from a small contact area. Copper’s higher conductivity does not guarantee a lower component temperature if airflow or fin area limits cooling.
How to design a heatsink
Start with the heat the component generates and the maximum temperature it can tolerate. Use the highest expected ambient temperature to determine the available temperature rise.
Then work within the assembly:
- Base: Match the heat-source footprint and provide enough thickness to spread heat toward the fins.
- Fins: Select fin height and spacing for the available airflow. Closely spaced fins can restrict natural convection.
- Mounting: Position fixing holes and contact surfaces to maintain even contact with the component.
- Installation: Leave space for air to enter and leave the fin channels.
Confirm cooling performance with a thermal model or a prototype tested under the intended operating conditions.
How to calculate thermal resistance of heatsink
For heatsink-to-air thermal resistance, use:
RθSA = (Ts − Ta) / Q
- Ts: Heatsink temperature at the specified base measurement point, °C
- Ta: Ambient air temperature, °C
- Q: Heat dissipated through the heatsink, W
- RθSA: Heatsink-to-air thermal resistance, °C/W
For example, a heatsink base at 65°C, with ambient air at 25°C and 20 W passing through the heatsink, has a thermal resistance of 2°C/W.
To measure this value, apply a known heat load and record the base and ambient temperatures once they stabilize. Keep airflow, mounting orientation and measurement locations consistent when comparing heatsinks.