er collet wrench: , fins at pitch, flatness, thermal resistance. MOQ 50 sets, ships in 10 working days.
er collet wrench: , fins at pitch, flatness, thermal resistance. MOQ 50 sets, ships in 10 working days.
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The ER collet wrench is a stamped one-piece tool with a base and fins, pressed from a single die in one stroke. Fin pitch stays within tolerance across a run, flatness on the mounting face is held directly from the tool, and the finish is applied after forming. Monthly output runs at capacity, and a single stroke forms the whole wrench so part cost stops scaling with complexity.
Related reading: Corrosion Protection for Springs: Coatings and Materials.
A base and fins define this er collet wrench. Pressed from on tooling, it holds and returns at . Monthly output runs at .
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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.
Learn more about Extrusion Heat Sink Profile Design: Standard Shapes and Custom Options for Optimal Thermal Management.
Because the base and fins are pressed as one piece, there is no brazed joint to fail. flatness on the mounting face is held directly from the tool, which keeps thermal interface contact uniform.
A single stroke forms the whole er collet wrench, so part cost stops scaling with complexity. Tooling runs , and the cycle feeds a line.
Further technical detail: BQUQ Extruded Heatsink With Spring Clip.
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.
The finish is applied after forming, so corrosion protection does not get cut through at the fin roots the way it does on machined alternatives.
The standard material is , supplied with . For applications where drilling and tapping 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 , 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.
Flatness is checked on a against a limit, and fin pitch is verified optically at . Reports go out with each lot.
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.
For drilling and tapping builds, the mounting face matters as much as the thermal rating: it decides whether thermal interface material spreads evenly or pools at one end.
Where a er collet wrench runs at drilling and tapping volumes, part-to-part consistency decides field returns. on a run keeps the thermal curve inside one band.
In drilling and tapping, the base usually doubles as the mounting interface. with flat gives a stable surface for the drilling and tapping thermal pad.
For drilling and tapping prototypes, 10 working days covers drawing review and first article. Production lots move to 20 working days once the capability is signed off.
| Parameter | Value / Range |
|---|---|
| MOQ (prototype) | 50 sets |
| MOQ (production) | 1000 sets |
| Lead time (prototype) | 10 working days |
| Lead time (production) | 20 working days |
is the standard choice. For drilling and tapping in a corrosive environment we specify 6063-T5 with ; for the highest conductivity we move to copper C110, which raises cost and weight but drops thermal resistance by roughly half at the same envelope.
Extrusion is cheaper above roughly 500,000 pieces per year and gives a smoother profile. Stamping wins below that and wherever fin gauge drops below 0.5 mm, because extrusion cannot hold consistently. For drilling and tapping prototypes, tooling cost usually decides it.
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.
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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.
The plant is ISO9001 certified, and parts ship with RoHS and REACH declarations on request. Third-party SGS inspection can be arranged before the container is sealed, which is what most drilling and tapping buyers specify.
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The line sits in Dongguan in a single ISO9001 plant. presses cover the er collet wrench family, and per month is current committed output.
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Production runs on cycles with in-line vision on . That is what keeps a commitment credible in peak season.
See also: Flatness and Surface Specs for Heat Sink Interfaces.
Quality staff sit beside the press, not in a separate room. Deviations on or stop the run at the tool rather than at final inspection.
Learn more about BQUQ CNC Machined ER20 Spring Collet Single Precision Tooling.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
Further technical detail: Custom CNC Machined Auto Lathe 20 Type Hex Bore Spring Collet.
| Parameter | Value / Range |
|---|---|
| Material | Standard steel; optional passivated route; copper C110 for conductivity |
| Tolerance | Fin pitch held within tolerance across a run; flatness held directly from tool |
| Lead time | Tooling runs; cycle feeds a line |
| MOQ | Monthly output runs at capacity |
| Capacity | Monthly output runs at capacity |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped one-piece | Repeatable fin profile and no brazed joint | Low fin gauge limits thick-section strength |
| Extruded profile | Simple constant cross-sections | Cannot hold fin pitch as stamping does |
| Machined alternative | Complex features and tight details | Higher cost per part and finish cut at fin roots |
| Passivated route | Drilling and tapping exposure concerns | Adds a process step after forming |
| Copper C110 | Conductivity matters more than weight | Higher material cost and weight |
| Stage | Control | Record |
|---|---|---|
| Stamping | Die forms every fin in one stroke; pitch within tolerance | Tool setup and stroke record |
| Forming | Base and fins pressed as one piece; no brazed joint | One-piece verification |
| Flatness | Mounting face flatness held directly from tool | Flatness check record |
| Finish | Applied after forming; corrosion protection not cut at fin roots | Finish application record |
| Inspection | Inspection before every shipment | Shipment inspection record |
The die forms every fin in one stroke, so pitch stays within tolerance across a run. This repeatable fin profile is what extrusion cannot hold. The flatness on the mounting face is also held directly from the tool, keeping thermal interface contact uniform.
Recommended reading: What Is CNC Prototyping? Rapid Prototype Machining Explained for Product Designers.
Yes. Where conductivity matters more than weight, copper C110 raises thermal performance. The standard material is supplied with a standard finish. For drilling and tapping exposure concerns, we recommend the passivated route. The finish is applied after forming.
Stamping gives a repeatable fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within tolerance across a run. Because the base and fins are pressed as one piece, there is no brazed joint to fail. A single stroke forms the whole wrench.
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Monthly output runs at capacity. Tooling runs, and the cycle feeds a line. A single stroke forms the whole ER collet wrench, so part cost stops scaling with complexity. Low fin gauge is where stamping wins: fins at pitch give more surface per cubic millimetre than a machined or extruded profile.
The finish is applied after forming, so corrosion protection does not get cut through at the fin roots the way it does on machined alternatives. For applications where drilling and tapping exposure is a concern, we recommend the passivated route. Where conductivity matters more than weight, copper C110 raises thermal performance.
Inspection before every shipment. The die forms every fin in one stroke, so pitch stays within tolerance across a run. Flatness on the mounting face is held directly from the tool. The finish is applied after forming, so corrosion protection does not get cut through at the fin roots.
Stamping gives a repeatable fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within tolerance across a run. Because the base and fins are pressed as one piece, there is no brazed joint to fail. A single stroke forms the whole wrench, so part cost stops scaling with complexity.
| Parameter | Specification |
|---|---|
| MOQ (prototype) | 50 sets |
| Lead time (production) | 20 working days |
