Connectorized and unfinished cord layouts
Looped connectorized coil
Looped black coiled communication cord with a circular connector and multiconductor terminal.
- Market / context
- Train radio equipment
- Equipment end
- Multiconductor terminal
Coiled Communication Cords
Coiled Communication Cords for Train Radio Equipment
MTTJ forms coiled communication cords for train radio equipment from the supplied drawing or reference sample. Coil diameter, relaxed length, working reach, tail lengths, cable construction, connector interfaces, pinout, and movement checks are defined for the named equipment program.
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Train-radio coiled cord with connectorized ends
The product image shows the formed coil, a circular connector, a molded cable exit, and a multiconductor terminal. Coil route and tail lengths are visible.
Train-radio equipment that needs retractable cable reach
- Train radio handsets and control units
- Rail-transit communication equipment
- Vehicle-mounted radio interfaces
- Specified communication equipment requiring retractable cable reach
Coil dimensions and end configurations
- Retracted and extended length control
- Power, signal, data, and control conductor combinations
- Connectorized ends
- Overmolded strain relief when specified
- Custom jacket color and finish
Jackets for repeated flexing and recovery
- PU / TPU
- PVC
- TPE
- Specified cable materials
Coil geometry
Start with relaxed length, reach
Relaxed length, working reach, coil diameter, cable diameter, and straight-tail lengths determine how the cord forms, extends, and returns.
| Retracted length | The drawing or target operating envelope sets the relaxed coil length. |
|---|---|
| Extended working length | Cable type, coil diameter, and working reach decide how far the cord can be pulled in use. |
| Coil outer diameter | Cable OD and forming target set the visible coil diameter. |
| Conductor count | Electrical load and connector interface set the conductor count and wire gauge. |
| Repeated‑flex expectations | When repeated flexing matters, include the motion profile and test method with the inquiry. |
Product range
Coiled communication cords for train radio equipment
Four configurations show coil turns, tail routes, terminals, and connector geometry for train-radio communication cord requirements.
Connectorized and unfinished cord layouts
Narrow U-shaped coil
Narrow U-shaped black coil with two straight cable tails ready for the specified end treatment.
- Market / context
- Train radio equipment
- Equipment end
- Two unfinished cable tails
Connectorized and unfinished cord layouts
Wide U-shaped coil
Wide U-shaped black coil with two straight cable tails and the full coil route visible.
- Market / context
- Train radio equipment
- Equipment end
- Two unfinished cable tails
Forming the coil and finishing the ends
- 1Wire cutting
- 2Wire stripping
- 3Coil forming
- 4Connector assembly
- 5Electrical testing
Reach, recovery, wiring, connector fit
- Measure relaxed coil length, working reach, coil OD, and straight-tail length against the drawing or sample target.
- Check continuity, polarity, and connector fit after coil forming and end assembly.
- Run flex, recovery, or repeated-motion checks when the method and limits are supplied.
Repeated flexing and recovery need a stated test
Mixed power, signal, and data requirements
Outdoor, oil, UV, or repeated flexing environments
Requested repeated-motion validation or material documentation
Qualified-supplier coordination
- Horizontally injection-molded housings requiring horizontal molding machines
- PCB assemblies / circuit boards
- Specified plug, connector, or component sourcing
For quotation
Show the coil dimensions and both cable ends
- Relaxed length, working reach, coil OD, and straight-tail length
- Cable construction, conductor count, and connector details
- Flex or recovery expectations with quantity and use environment
Related routes
Continue with the closest product, capability, industry, or guide
Request a quote
Send train-radio coiled-cord drawings
Include relaxed length, working reach, coil diameter, cable construction, and the two end configurations. Add flex or recovery test requirements when the application needs them.