1. Core Advantages - Three Levels of Precision the Connector Plate Must Hold
Bore matches your arm tube, not a guess. A 25 mm tube needs a bore in the ~24.9–25.1 mm band - loose, the arm slips in flight; tight, you deform the tube. We machine to your actual tube OD.
Hole spacing repeats batch to batch. Mounting holes on the connector plate must align with the top plate, bottom plate and standoffs. Contour and hole position controlled to ±0.05 mm class - every reorder assembles the same way.
Clean edges, no delamination. CNC milling (not laser) keeps the cut edge clean. A frayed edge at a clamp slot is a future stress crack - we rout it sharp and deburr it.
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2. Parameter Table (Typical Values, by Arm Tube OD)
| Arm tube OD | Bore tolerance | Plate thickness | Clamp hardware note |
|---|---|---|---|
| 16 mm | ±0.05 mm band | 2.5 – 3.0 mm | M3 class, locknuts |
| 20 mm | ±0.05 mm band | 3.0 – 4.0 mm | M3/M4, locknuts |
| 25 mm | ~24.9 – 25.1 mm | 4.0 – 5.0 mm | M4 class, locknuts |
| 30 mm+ (heavy lift) | ±0.05 mm band | 5.0 – 8.0 mm | M5 class, locknuts |
| Build parameter | Typical value |
|---|---|
| Material | 3K carbon / epoxy, load-path layup |
| Process | CNC milled, deburred |
| Contour / hole position | ±0.05 mm (critical features ±0.025 mm class) |
| Surface | Glossy or matte |
| Accepted drawings | DXF / STEP / DWG |
| MOQ | 1 pc sample order accepted |
Typical industry values; bore and pattern locked from your tube and approved sample.
3. Customization - Matched to Your Arm and Frame Stack
Send your arm tube OD and frame drawing - we machine the bore, clamp slot and bolt pattern.
Clamp design - slot geometry and bolt positions tuned so the arm doesn't rotate under load.
Fiber orientation aligned with the load path, shared with your engineering team.
Sample then batch, private label available.
4. Company Advantages - Precision Export, Batch-Inspected
Tolerance you can check. Critical bores and hole positions inspected per batch; inspection report available on request.
Batch consistency. Same fixtures, same QC after sample sign-off - reorders are repeat orders.
Clean process. CNC milling, no laser heat-affected edges; deburred on both faces.
Flexible shipping. DHL/FedEx for samples, sea freight for bulk.
5. FAQ
Q: What tolerance do you actually hold? ±0.05 mm typical; critical bores and hole positions to ±0.025 mm class. Tell us which features are critical.
Q: My arm tube is a non-standard OD - can you match it? Yes - send the tube or its measured OD; we bore to that.
Q: Will the arm slip in the clamp? Bore band + clamp slot + locknut bolts - sized to your tube; we recommend the bolt torque band.
Q: Any delamination risk at the clamp slot? CNC-milled, deburred edges avoid that; avoid sharp internal corners where the clamp loads.
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