A TPU spiral cable project starts with a defined application and drawing. The production route, equipment and acceptance checks must be confirmed for the selected cable construction and order; a general product page cannot establish a guaranteed lead time or performance rating.
1. Specification review
Review relaxed length, normal working extension, coil diameter, conductor count and gauge, connector and pinout, shielding, environment and quantity. Identify the measurements and documents needed for quotation.
2. Cable and coil design
Select a suitable cable construction and coil geometry for the application. Confirm the jacket formulation, dimensions, straight tails and routing with a sample. Material performance and operating temperature depend on the selected grade and test conditions.
3. Connector assembly and strain relief
Match the cable to the specified connector, pinout and cable exit. Review connector retention, overmolding or other strain-relief options where appropriate. Confirm sealing at the complete assembly level if the application requires it.
4. Sample approval
Check the agreed electrical and dimensional criteria, extension and rebound in normal use, connector fit and visual finish. Endurance, ingress, temperature and chemical-resistance tests should be quoted against a named method and project-specific acceptance criteria.
5. Production inspection and packaging
Agree on drawing revision control, in-process checks, final inspection records, labels, coil restraint and carton requirements. Request the relevant supporting documents for the materials and target market; do not assume a finished cable has a certification without project-specific evidence.
MOQ, samples and documentation
MOQ, sample timing, production lead time and documentation availability vary with cable construction, tooling, connectors and quantity. Send your requirements for a written feasibility review and quotation.
Review TPU coiled cable options, read the supplier evaluation checklist, or send a drawing or sample photo for review.
Process controls should follow the approved specification
A production process is useful only when its checkpoints connect to an approved drawing, sample and revision. Buyers should define which characteristics control fit, electrical function, extension, return behavior and packaging before mass production begins. The factory can then place checks at the stages where variation is most likely to occur.
Sample-to-production handoff
The approved sample should be supported by written information. Relying on a physical sample alone can leave hidden details unclear, including pinout, conductor construction, shield termination, straight-tail measurement points and packaging. A practical handoff package may include:
- Approved drawing and revision date.
- Bill of materials or controlled component references.
- Connector, mating part, orientation and wiring diagram.
- Relaxed length, working extension, coil OD and straight tails.
- Appearance, marking, label and packaging references.
- Inspection method and acceptance limits agreed with the buyer.
Production checkpoints buyers can discuss
| Stage | Typical review point | Buyer input needed |
|---|---|---|
| Incoming material | Specified cable, connector and component identity. | Approved construction and substitution rules. |
| Cutting and preparation | Length, conductor preparation and shield handling. | Measurement points and wiring requirements. |
| Coiling | Relaxed length, coil OD, pitch and straight tails. | Normal working reach and installation space. |
| Termination | Pinout, connector orientation and strain-relief transition. | Mating part, pinout and cable exit direction. |
| Final inspection | Continuity, dimensions, appearance and agreed movement checks. | Pass/fail criteria and sample state. |
| Packaging | Coil restraint, labels, SKU separation and carton information. | Receiving, traceability and destination requirements. |
Inspection records should be project-specific
“100% tested” is incomplete unless the test is named. Buyers should identify which checks apply to every piece, which are sampled, and which belong only to initial sample approval. Available checks may include conductor continuity, pinout, dimensions, connector fit, working extension, return behavior, appearance and packaging review. Claims about service life, ingress protection or environmental performance require an agreed method and evidence.
Packaging is part of production control
A correct cable can still arrive with distorted coils, damaged connectors or mixed labels. Confirm whether each cable needs individual restraint, protective caps, SKU identification, lot information, inner-box separation or export-carton marks. Review packaging with the sample when receiving condition matters.
Separate production-process research from product selection
This page explains process and inspection flow. For product selection, dimensions, conductors, shielding and connector options, use the Custom TPU Coiled Cables specification hub. For practical evidence, review the batch length inspection and packaging case and the testing and quality equipment guide.
Prepare the production review
Send the drawing revision, approved sample reference, coil dimensions, connector and pinout, inspection requirements, quantity, labels and packaging instructions. Upload the project information for review before sampling or production planning.