Cable Solutions for Robotics and Multi-Axis Motion
Keep power, motion control and communication reliable through every axis. HULK designs and manufactures flexible industrial cables for six-axis robots, collaborative robots, SCARA systems and other equipment exposed to repeated bending, continuous torsion and restricted routing space.
From replacing an existing robot cable to developing a new custom specification, our engineers work from your electrical requirements, motion profile and operating environment to deliver a cable designed around the application.
- Manufacturing Since 2007
- Custom Cable Engineering
- In-House Motion Testing
- 35+ Certifications Across Our Portfolio
Engineered for the Demands of Robotic Motion
Robotic motion is rarely limited to one predictable direction. A cable may twist around one axis, bend around another, accelerate, reverse and return to its starting position repeatedly throughout each production cycle. As the robot changes posture, the point of highest cable stress can also move.
That is why selecting industrial robot cables by conductor size or outer diameter alone is not enough. Conductor stranding, core arrangement, insulation, shielding, fillers and jacket materials must be considered together with the actual cable route and movement.
Multi-Axis Torsion
Cables routed through robotic joints and wrists may rotate around their longitudinal axis while the robot moves through three-dimensional paths. The cable construction must distribute torsional stress rather than concentrate it in individual conductors or shields.
Repeated Flexing
External axes, tool-changing systems and track-mounted robots may subject cables to continuous bending. The cable must be designed around the required bend radius, travel distance, speed and expected operating cycles.
Compact Routing
Space inside robotic joints, protective conduits and end-of-arm systems is often limited. Cable diameter, flexibility and routing behavior must be balanced with the required electrical functions and mechanical protection.
Stable Signal Transmission
Motor power, feedback, industrial communication and sensor circuits may operate close to one another. Appropriate shielding, cable geometry and grounding design help protect signal integrity in electrically noisy robotic environments.
Mechanical and Chemical Exposure
Depending on the robotic cell, cables may be exposed to abrasion, oils, coolants, cleaning agents, welding spatter or repeated contact with surrounding equipment. Jacket materials must be selected according to the actual operating environment.
Temperature and Compliance Requirements
Ambient temperature, flame-retardancy, halogen-free requirements and regional approvals can influence the final cable construction. Certification requirements should therefore be identified before the design is released for production.
Cable Solutions Across the Robotic System
A robotic system is not served by one generic cable. Different positions within the system carry different combinations of power, control, feedback, data and sensor signals. HULK provides a coordinated range of robotics cable solutions for connections from the control cabinet to the end-of-arm tooling.
Controller and Drive Cabinet
Recommended Solutions: Industrial Ethernet Cables and Fieldbus Cables
Industrial Ethernet and fieldbus cables connect controllers, drives, remote I/O and other networked components. Protocol compatibility, impedance, shielding and installation conditions must be considered to maintain dependable communication.
HULK supports industrial communication requirements including PROFINET, EtherCAT, DeviceNet, CANopen, Profibus, CC-Link and AS-Interface applications.
Servo Drives and Motors
Recommended Solution: Servo & Motor Cables
Servo and motor cables transmit power between drives and motors throughout the robotic motion system. Cable construction can be configured around the required voltage, conductor cross-section, shielding arrangement, installation route and applicable standards.
Moving Joints and Robot Axes
Recommended Solution: Robot & Torsion Cables
Robot and torsion cables are intended for routes exposed to twisting, bending and changing three-dimensional movement. The construction is developed around the required torsion angle, torsion length, movement speed and target operating life.
Sensors and End-of-Arm Tooling
Recommended Solution: Sensor & Actuator Cables
Sensor and actuator cables carry signals and control commands between the robot, sensors, grippers, tools and peripheral equipment. HULK can support conventional sensor connections as well as application-specific and IO-Link-compatible cable requirements.
External Linear Axes
Recommended Solution: High-Flex Drag Chain Cables
Track-mounted robots and auxiliary linear axes normally create repeated bending rather than unrestricted torsional movement. High-flex cables developed for cable carriers can support these controlled travel paths when selected according to travel distance, bend radius, speed and acceleration.
Custom Integrated Routing
Recommended Solution: Custom-Engineered Cables
Where an existing cable does not fit the available space or electrical requirements, HULK can develop a custom construction around conductor count, cross-section, insulation, shielding, jacket material, outer diameter, color identification and certification requirements.
Multi-function cable constructions may also be evaluated when several transmission requirements must share a restricted route.
Robotic Applications We Support
HULK works with robot manufacturers, automation equipment builders, system integrators and industrial users to develop cables for a wide range of robotic motion profiles and operating environments.
Six-Axis Articulated Robots
Six-axis robots create complex three-dimensional movement across the base, shoulder, elbow and wrist. Cables routed along these axes must accommodate changing torsional loads while maintaining dependable power, signal and data transmission.
Collaborative Robots
Collaborative robots often combine compact dimensions with frequent repositioning and a wide range of end-of-arm tools. Cable solutions may need to carry motor power, feedback, industrial data and sensor signals through limited routing space.
SCARA and Delta Robots
SCARA and delta robots are commonly used for rapid assembly, sorting and pick-and-place operations. Their high-speed, repetitive movement requires cable constructions selected for acceleration, bend radius, installation length and cycle frequency.
Welding Robots
Robotic welding cells can expose cables to heat, abrasion, oils and welding spatter. Jacket and insulation materials must be selected according to the actual exposure level, while shielding and routing support reliable control and communication.
Painting and Dispensing Robots
Painting, sealing and dispensing systems may operate around chemicals, coatings, cleaning agents and tightly controlled movement paths. Material compatibility and environmental requirements should be confirmed during cable specification.
Palletizing and Machine-Tending Robots
Palletizing and machine-tending robots perform long sequences of repetitive movement, often with high operating duty cycles. Systems with an additional linear axis may require both torsion-resistant robot cables and high-flex drag chain cables in different parts of the installation.
From Motion Profile to Custom Cable Design
Every robotic cable project begins with the movement—not with a standard cable catalogue. HULK reviews how and where the cable will operate before defining conductor, shielding, insulation and jacket requirements.
01. Define the Motion and Installation Profile
We first determine whether the cable remains fixed, bends repeatedly, twists around its longitudinal axis or experiences a combination of movements.
Useful information includes:
- Robot type and number of axes
- Cable installation position
- Torsion angle and active torsion length
- Minimum bend radius
- Travel distance
- Movement speed and acceleration
- Target operating cycles
- Cable guidance and fixing points
- Available installation space
02. Define the Electrical Requirements
The electrical design is reviewed according to the functions the cable must perform.
Important parameters may include:
- Operating voltage and current
- Conductor count and cross-section
- Power, control, feedback or sensor functions
- Industrial Ethernet or fieldbus protocol
- Shielding and grounding requirements
- Signal integrity requirements
- Cable length and voltage-drop limits
03. Configure the Cable Construction
Based on the confirmed requirements, HULK engineers evaluate conductor stranding, core arrangement, insulation, shielding, fillers, jacket material and overall dimensions.
Additional options may include:
- Custom conductor combinations
- Individual or overall shielding
- Jacket color and printed identification
- Oil-, abrasion- or chemical-resistant materials
- Halogen-free and flame-retardant constructions
- Application-specific certification requirements
04. Prototype, Validate and Release
A prototype is produced for dimensional, electrical and application review. Rapid samples can be available in as little as seven days, depending on design complexity, material availability and required validation.
After the cable specification and validation requirements are approved, the design can be released for controlled production with documented quality requirements.
Validated for Reliable Robotic Motion
A robotic cable specification should be supported by measurable validation. HULK operates an in-house testing center equipped to evaluate electrical performance, repeated motion and application-specific requirements across our industrial cable portfolio.
Depending on the cable design and intended application, validation may include:
Torsion and Motion Testing
Robot cable constructions can be evaluated under repeated twisting and changing motion conditions based on the agreed torsion angle, test length, speed and cycle requirements.
Repeated Bending and Double-Loop Testing
High-flex and moving cables can be tested under repeated bending or double-loop motion to assess conductor, insulation, shielding and jacket performance throughout the test program.
Electrical Performance Testing
Electrical measurements are used to verify relevant characteristics such as conductor performance, insulation integrity and transmission requirements according to the approved cable specification.
Material and Construction Testing
Cable dimensions, jacket properties, insulation characteristics and other construction parameters are checked to confirm consistency with the approved design.
Application-Specific Validation
Where standard tests do not represent the customer’s operating conditions, HULK can develop a customized validation plan around the required movement, environment and electrical performance.
Testing Capability at a Glance:
HULK manufactures industrial cables in a 15,000-square-meter facility supported by more than 150 skilled professionals and a daily production capacity exceeding 300,000 meters. ERP-based production management supports material, process and order traceability from approved specification to finished cable.
Our wider portfolio is supported by more than 35 international certifications and compliance credentials, including ISO 9001:2015, UL/cUL, CE, TÜV, IEC, VDE, RoHS and REACH. The applicable certification scope must be confirmed for each cable construction and part number.
Robotics Cable FAQs
What is the difference between a robot cable and a drag chain cable?
A drag chain cable is normally designed for repeated bending within a controlled plane and defined bend radius. A robot cable may need to withstand twisting around its longitudinal axis as well as changing three-dimensional movement. Some robotic systems use both types in different locations, so the correct cable should be selected according to the actual route rather than the equipment name alone.
When does a robotic application require a torsion-rated cable?
A torsion-rated cable is generally required when the installed cable rotates around its longitudinal axis or follows a route that changes direction through multiple axes. The torsion angle, active torsion length, movement speed, acceleration and expected cycles should be provided before a suitable construction is recommended.
Can power, signal and data conductors be combined in one custom cable?
It may be possible to combine several electrical functions in one custom construction, depending on voltage, current, signal type, shielding, thermal conditions and available cable diameter. HULK evaluates electromagnetic compatibility, internal arrangement and mechanical movement before confirming whether an integrated design is appropriate.
What information is needed to select an industrial robot cable?
The most useful information includes the robot type, cable position, movement type, torsion angle, bend radius, travel distance, speed, acceleration, target cycles, electrical requirements, operating environment, approvals, cable length and quantity. A drawing, existing datasheet or cable sample can also help accelerate the review.
Can HULK match an existing cable specification or sample?
HULK can review an existing datasheet, drawing, cable marking or physical sample together with the required application performance. The engineering team will assess the electrical construction, dimensions, materials, shielding and movement requirements before proposing a suitable HULK specification.
How quickly can HULK produce a custom robotics cable sample?
Rapid custom samples can be available in as little as seven days. Actual timing depends on conductor configuration, materials, tooling and the required testing program. The expected sampling schedule is confirmed after the technical requirements have been reviewed.
Are UL, CE or other certifications available for robotics cables?
HULK maintains a broad portfolio of international certifications and compliance credentials. However, approval coverage varies by cable family and construction. Required markets and standards should be identified at the beginning of the project so the appropriate certified or compliant design can be selected.
Explore Related Robotics Cable Resources
Robot & Torsion Cable Technology
Learn how conductor stranding, core arrangement, shielding, insulation and jacket materials influence cable performance under multi-axis robotic motion.
Designing Cables for 6-Axis Robots
Explore the relationship between torsion, bending, cable routing and movement profiles when specifying cables for articulated robotic arms.
Robotic Cables vs Drag Chain Cables
Understand the difference between multi-axis torsional movement and controlled repeated bending—and why each motion type requires a different cable design.
Selecting Servo Power and Feedback Cables for Robotics
Review the electrical, shielding, movement and installation factors involved in choosing servo-related cables for robotic and automation systems.
Plan Your Robotics Cable Specification
The most reliable cable recommendation starts with an accurate understanding of the robot, cable route and operating environment. Share the information you already have, and our engineering team can help identify any missing parameters.
Information to Include
- Robot type and manufacturer, if applicable
- Number of axes
- Cable installation position
- Fixed, flexing, torsional or combined movement
- Torsion angle and active torsion length
- Minimum bend radius
- Travel distance
- Speed and acceleration
- Expected operating cycles
- Voltage, current and conductor requirements
- Signal or industrial communication protocol
- Shielding requirements
- Temperature and environmental exposure
- Required certifications
- Cable length and estimated order quantity