compression spring assortment: , fins at pitch, flatness, thermal resistance. MOQ 100 pcs, ships in 7 working days.
compression spring assortment: , fins at pitch, flatness, thermal resistance. MOQ 100 pcs, ships in 7 working days.
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Compression spring assortment uses stamped fins and a base flat, rated at ΔT = 60 K for medical device builds at monthly output. Stamping holds fin pitch within a run, supports low fin gauge, and covers multiple fin gauges from one press family. Die wear shows as measurable pitch shift caught at inspection, not in the field, making medical volume programs repeatable.
Related reading: What Is the Minimum Extruded Heat Sink Fin Thickness?.
Our compression spring assortment uses with fins and a base flat to . Rated at ΔT = 60 K, it supports medical device builds at monthly output with as standard.
Stamping gives a repeatable fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within across a run.
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Low fin gauge is where stamping wins: fins at pitch give more surface per cubic millimetre than a machined or extruded profile of the same envelope.
Stamped construction tolerates batch variation better than extrusion: die wear shows up first as a measurable shift in fin pitch, which inspection catches at rather than in the field.
One supplier now covers to fin gauges from the same press family, so a thermal redesign is a tooling change rather than a new vendor.
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Every stroke is dimensionally identical, so hole position carries across the batch. That is what makes medical device volume programs repeatable.
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The standard material is , supplied with . For applications where medical device exposure is a concern, we recommend the passivated route; where conductivity matters more than weight, copper C110 raises thermal performance and roughly doubles unit mass.
General dimensions run to ±1.2 mm, with critical features such as held separately. Formed geometry inherits tooling repeatability of , and hole position is held to . Tighter classes need an extra press operation, so it is worth deciding before tooling rather than after.
Incoming is checked for thickness and hardness before it enters the press. After forming, confirms and against the drawing.
Lot traceability runs from coil to carton: heat number, press stroke range and inspection record stay attached, so a field issue can be tied back to a specific run.
Flatness is measured on granite rather than on cast iron, because at reads differently on a plate that has not been lapped. Records keep both readings.
Final containment is . Every carton is labelled with lot, quantity and inspection status, and the record is kept for 10 years against the ISO9001 file.
medical device programs are the reason this geometry exists. Where the enclosure cannot grow taller, fin density is the only lever, and pitch with stock is the practical ceiling for aluminium.
medical device customers typically specify for corrosion reasons and then hold the drawing to ±1.2 mm. The line absorbs the volume without a second source.
Recommended reading: Precision CNC Components in Industrial Robotics: Case Study and Tolerances.
In medical device, the base usually doubles as the mounting interface. with flat gives a stable surface for the medical device thermal pad.
Designers working on medical device ask for flatness before they ask for thermal data, because medical device assembly is automated and a non-flat base stops the line.
Compare it with Spring Testing Methods in 2024: Load, Fatigue, and Dimensional Inspection Guide.
| Parameter | Value / Range |
|---|---|
| General tolerance | ±1.2 mm |
| MOQ (prototype) | 100 pcs |
| MOQ (production) | 50000 pcs |
| Lead time (prototype) | 7 working days |
| Lead time (production) | 30 working days |
Yes. Standard is . Powder coating to RAL 9005 adds about 0.1 mm to the base; zinc-nickel is better for grounding. Note that any added coating sits between and the airflow, so we do not coat the fin roots.
We test at and report . That is a steady-state figure, not a transient: for medical device first-power-on behaviour you need a different test, and we can run it on request.
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Yes, we ship as-pressed for customers who do their own finishing. The risk is handling marks on fins, so we pack those parts with interleaving sheets inside .
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The family covers , with unit weights from . Because the base is pressed, new sizes are a die insert change rather than a new press line, so development is usually 2 weeks rather than 8.
We supply a 2D drawing with the CMM report, and 3D STEP on request. Both show flatness callouts and tooling split lines, which matters if you are checking in your own assembly.
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The line sits in Dongguan in a single ISO9001 plant. presses cover the compression spring assortment family, and per month is current committed output.
Tooling is built in-house, which is how is held across a programme rather than drifting part by part.
We quote and hold 100 pcs for sampling. Sampling is , so a first evaluation does not require a production commitment.
Further technical detail: Die Coatings for Stamping: TiN, CrN and When They Pay Back.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
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| Parameter | Value / Range |
|---|---|
| Material | Standard material; passivated route for medical exposure; copper C110 for conductivity |
| Tolerance | Fin pitch held within a run; hole position carries across batch |
| Lead time | Not specified in excerpt |
| MOQ | Not specified in excerpt |
| Capacity | Monthly output for medical device builds |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped fins | Repeatable fin profile, pitch within run | Die wear shifts fin pitch, caught by inspection |
| Extruded profile | Not recommended for fin pitch control | Cannot hold repeatable fin profile like stamping |
| Machined profile | Not ideal for low fin gauge | Less surface per cubic millimetre than stamped fins |
| Passivated route | Medical device exposure concerns | Not for conductivity priority |
| Copper C110 | Conductivity over weight | Higher weight than standard material |
| Stage | Control | Record |
|---|---|---|
| Stamping | Die forms every fin in one stroke | Pitch stays within across a run |
| Fin gauge | Low fin gauge supported | More surface per cubic millimetre than machined or extruded |
| Batch variation | Die wear shows as measurable shift in fin pitch | Inspection catches at rather than in the field |
| Hole position | Every stroke dimensionally identical | Hole position carries across the batch |
| Final | Inspection before every shipment | Not specified in excerpt |
The compression spring assortment is rated at ΔT = 60 K. This rating supports medical device builds at monthly output. The stamped fin profile holds pitch within across a run, and low fin gauge gives more surface per cubic millimetre than machined or extruded profiles of the same envelope.
Stamping gives a repeatable fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within across a run. Low fin gauge is where stamping wins, giving more surface per cubic millimetre than a machined or extruded profile of the same envelope. Stamped construction also tolerates batch variation better.
Die wear shows up first as a measurable shift in fin pitch. Inspection catches this at rather than in the field. Every stroke is dimensionally identical, so hole position carries across the batch. This makes medical device volume programs repeatable and ensures pitch stays within across a run.
The standard material is supplied with a standard finish. For applications where medical device exposure is a concern, we recommend the passivated route. Where conductivity matters more than weight, copper C110 raises thermal performance. One supplier now covers multiple fin gauges from the same press family.
Yes. One supplier now covers multiple fin gauges from the same press family, so a thermal redesign is a tooling change rather than a new vendor. This supports medical device builds at monthly output and keeps hole position carrying across the batch because every stroke is dimensionally identical.
Compare it with Custom Special Shaped Wire Form Springs.
Every stroke is dimensionally identical, so hole position carries across the batch. Stamping gives a repeatable fin profile that extrusion cannot hold, with pitch staying within across a run. Inspection catches die wear as a measurable shift in fin pitch at rather than in the field, making medical device volume programs repeatable.
Low fin gauge is where stamping wins: fins at pitch give more surface per cubic millimetre than a machined or extruded profile of the same envelope. This is achieved with a die that forms every fin in one stroke, so pitch stays within across a run. Rated at ΔT = 60 K for medical device builds.
| Parameter | Specification |
|---|---|
| MOQ (prototype) | 100 pcs |
| Lead time (production) | 30 working days |
