Cable Assemblies for Industrial Automation & Robotics
A cable on a moving axis is not a cable in a cabinet. It is a component with a fatigue life, and the number of cycles it survives is decided by conductor stranding, jacket material, strain-relief geometry and bend radius — in that order.
HKWIRE is a custom cable assembly manufacturer and OEM/ODM supplier in Longgang, Shenzhen. We build drag-chain, servo and M8/M12 assemblies for automation and robotics on our own lines, with the flex test defined before the first part is made.
What this application demands
These are the constraints that change the design. Everything else is a normal cable.
- Flex life
- Cyclic bending at a defined radius and load. This is a fatigue problem, not a flexibility problem, and it is the number one cause of field failure on moving axes.
- EMC and shielding
- Braid coverage, drain-wire termination and 360° connector bonding. A shield that is pigtailed at one end is an antenna at high frequency.
- Oil and coolant resistance
- PUR and TPE jackets for drag chain; PVC will craze and stiffen in the presence of cutting fluid.
- Connector retention under vibration
- Screw-lock and bayonet coupling, plus an overmold with enough engagement length to stop the connector working loose.
- Bend radius control
- Minimum bend radius is a property of the whole assembly, not just the cable. A well-made cable installed at 3×D will fail early regardless of its rating.
Typical builds
- Drag-chain rated cables for continuous motion
- Servo motor power and encoder cables
- M8 / M12 sensor and actuator cordsets
- PROFINET, PROFIBUS and industrial Ethernet assemblies
- Robot dress packs and axis cabling
- Control cabinet harnesses with ferruled and labeled conductors
Automation and robotics assemblies we build
- M12 B-Coded PROFIBUS Cable, 5-Pin Fieldbus Cordset
- M8 3-Pin A-Coded Circular Connector Sensor / Actuator Cable
- M12 IO-Link Cable, Master to Device Drop for 3 and 4 Wire Ports
- M12 L-Code 16A Cable for IO-Link Power and AGV Drives
- M12 L-Code Power Splitter for Two IO-Link Masters
- FANUC Robot Encoder Cable A660 Series Compatible
- KUKA Robot Encoder Cable Compatible with 00-174-775
- Encoder Feedback Cable with PUR Jacket for Digital Servo Loops
- OEM Servo Encoder Cable Cross-Reference Pages by Machine Family
- KUKA Robot Power Cable Compatible with MOT X20
- M23 Screw Lock Cable for Servo Motor Power and Encoder Feedback
- Custom Industrial Robot Wire Harness
How we validate flex life
Flex and drag-chain testing is only meaningful when the test is defined. We report the load, the bend radius and the angle, because 10,000 cycles at R=10D with 200 g is not the same test as 10,000 cycles at R=6D with 1 kg.
| Test | Condition we state | Typical limit |
|---|---|---|
| Drag-chain flex | Load, bend radius and angle stated with the result | 1–10 million cycles (±90°, 200 g–1 kg, R=6–10D) |
| General flex | Bend test to a defined radius and load | 5,000–10,000 cycles |
| Conductor continuity | Monitored during flex testing | No discontinuity, <1–5 Ω |
We will not quote a flex-life figure without a motion profile. If you do not have one, send cycles per day, travel distance and the tightest radius in the installation.
What we ask before quoting
Answer these with the drawing and the quotation will be meaningful on the first pass.
- Motion profile: cycles per day, travel distance, tightest bend radius
- Environment: oil, coolant, temperature range, outdoor exposure
- Shielding and grounding requirement
- Mating connector part numbers
- Target flex life, and how failure will be judged
An automation cable supplier you can audit
We are a manufacturer, not a sourcing desk. Mold making, overmolding, assembly and testing share one facility, so a flex result and the process that produced it are never two separate stories.
We report flex life with the load, radius and angle stated, because a cycle count without them is not a specification. Assembly and inspection follow IPC/WHMA-A-620 Class 3 workmanship criteria under an ISO 9001 certified quality management system, with 100% continuity and pinout testing on every unit. Factory audits are welcome, in person or by live video walk-through, arranged in advance.
What to send with your RFQ
- Motion profile — cycles per day, travel distance, tightest bend radius
- Environment — oil, coolant, temperature range, outdoor exposure
- Shielding and grounding scheme, plus mating connector part numbers
- Quantity — prototype count and projected annual volume
Standard cordsets are listed under M8 and M12 circular cables and custom wire harnesses.
Send the specification and the mating connectors
We will confirm what the cable has to survive, flag anything that will cost you money without adding function, and quote against your drawing.
Industrial automation cable FAQ
What is your MOQ?
Production orders start at 500 pcs and ship 14 working days after approval. Prototype builds start from 1 to 50 pcs and leave in 3 working days.
How do you define flex life?
By the conditions, not just the count. We state load, bend radius and angle with every result. If you do not have a motion profile, send cycles per day, travel distance and the tightest radius in the installation and we will propose one.
Can you build M8 and M12 cordsets?
Yes, in straight and right-angle configurations, with PUR or PVC jackets. See the M8 and M12 range for common builds.
Do you overmold the connectors?
Yes. Overmold tooling is cut in our own tool room, so a strain-relief or sealing geometry change is a machining job we control; see overmolding.
Can we audit the factory?
Yes. On-site audits or a live video walk-through of the molding area, assembly lines and inspection benches can be arranged in advance.
Do you supply automation cables as an OEM or ODM partner?
Yes. Most programs ship under the customer brand: we build to your drawing as an OEM and ODM manufacturer and supplier, and the assemblies leave our Shenzhen factory with your labeling.
Do you build M12 L-coded and X-coded assemblies?
Yes, including M12 L-coded and X-coded cable assemblies, M12 to RJ45 adapters, and machine vision and computer vision cables for GigE Vision cameras, alongside drag chain cable rated for continuous motion.