Troubleshooting guide
Coaxial Cable Stripping Defects: Causes and Corrective Actions
Troubleshoot cut braid strands, torn foil, marked dielectric, nicked centre conductors, incomplete pull-off and inconsistent strip length.
Technically reviewed by: Lao Xiaoyu (劳晓宇) · Senior Engineer
Content updated:
Review confirmed:
Coax defects may be hidden under the next layer or connector. Use magnification and a written layer-by-layer drawing; a clean outside appearance is not sufficient. Inspect conductor marks, braid damage, dielectric cuts and layer lengths across sample pieces; each failure points to a different setting or tool.
Symptom and cause map
| Symptom | Possible causes | First checks |
|---|---|---|
| Cut braid strands | Excess depth, eccentric cable, blade runout | Actual jacket and braid diameters around the cable |
| Torn or folded foil | Dull blade, wrong sequence, aggressive pull-off | Blade edge and programmed layer order |
| Marked dielectric | Excess depth, clamp deformation, cable ovality | Cross-section and clamp pressure |
| Nicked centre conductor | Final depth too large, poor concentricity | Conductor position and blade calibration |
| Incomplete pull-off | Incomplete circumferential cut, friction, bonded layers | Inspect the cut before increasing pull force |
| Strip length varies | Clamp slip, end-stop variation, feed error | Mark the cable and compare several cycles |
| Residue or whiskers | Blade condition, material behavior, wrong cut mode | Magnified edge inspection |
Confirm whether variation comes from cable or setup
Measure several samples from the same reel and, if possible, another lot. Rotate a marked cable sample through different orientations. If the defect follows cable orientation, eccentricity or ovality may be limiting the cut-depth window. If it remains in the same machine position, inspect blade runout, calibration and clamping.
This method applies whether the work runs on a WM-2106A, WM-2208 or integrated WM-2506D. Preserve the program revision and blade identification with each trial.
Controlled correction sequence
- Stop and preserve failed ends plus the last accepted sample.
- Confirm cable supplier, lot and actual layer dimensions.
- Inspect blade condition, runout, clamping and calibration.
- Identify the first layer where the end differs from the drawing.
- Change one cut-depth, speed or pull-off variable at a time.
- Inspect consecutive samples around the cable circumference.
- Re-approve the stripped end and required electrical tests at normal speed.
See the complete coaxial cable assembly process. Evidence-controlled trials are published only in the case library. For a cable-specific correction, send failed ends, the layer drawing and unprocessed cable.
See the process in action
Demonstrations from the machines referenced in this guide. Click to watch the operation, then request a trial with your own material.
Questions engineers ask
What causes braid strands to be cut during coax stripping?
Possible causes include excessive jacket cut depth, cable eccentricity, diameter variation, blade runout, worn blades or unstable clamping. Measure the actual layer diameters before reducing the problem to one program value.
Why does the jacket cut cleanly but fail to pull off?
The cut may be incomplete around the circumference, the strip length may exceed the practical pull-off window, friction may be high, the clamp may slip or the jacket may remain bonded to the layer below. Inspect the cut before increasing pull force.
How should a coax stripping correction be approved?
Re-run the actual cable at normal speed and inspect every exposed layer against the written finished-end drawing. Include electrical testing after connector termination when the process specification requires it.