Connection Technology for Robotics & Automation.
We assemble Motor cables, encoder cables, hybrid cables and Fieldbus connections exactly to the requirements of your robot cell — with technical consultation up front, manufacturer-independent, from a single unit.
- Minimum order quantity
- 1 piece
- Quote
- ≤ 24 h
- Prototype
- 1–2 weeks
- Manufacturer
- All common
01 · Why KnorrTec
Four reasons why KnorrTec is the right partner for your robotics connections.
As a cable assembly specialist — not a distributor — we bring the technical expertise that is essential for heavily stressed connections in robotics. We do not supply off-the-shelf standard parts; we develop the connection that fits your application.
Technical consultation in advance
Before we assemble your cables, we clarify your requirements together — robot type, drive system, cable routing, ambient conditions. That way, the cable set fits right the first time.
Custom assembly from quantity 1
No minimum order quantity. Exactly your length, your connector, your protective jacket — from a prototype for the first cell to series production for the line.
Manufacturer-independent
Compatible with all common robot and drive systems. We know the standard connection types used across the market and supply the right connection — regardless of your system's manufacturer.
Tested quality
Every cable assembly is 100% electrically tested. Connectors are available in protection ratings up to IP69K for continuous industrial use — with a test report available on request.
02 · Technical Requirements
What cables in robotics need to be capable of.
Standard industrial cables quickly fail in robot cells. Knowing the requirements of a robot axis is what lets you choose the right cable material — that is the consulting expertise KnorrTec brings.
High flexibility
Millions of load cycles in cable carriers and robot arms without cable breakage — requires fine-wire strands to class 5/6 with a torsion-resistant outer jacket.
Torsion Resistance
6-axis robots twist the cable by several hundred degrees with every cycle. Robot cables must withstand ±180° of torsion over millions of cycles.
Oil resistance
Coolants and hydraulic oil attack standard PVC jackets. In manufacturing environments, oil-resistant PUR or TPE jackets are essential.
EMC shielding
Frequency inverters and welding equipment generate strong interference fields. Braided shields with ≥ 85% coverage reliably protect signal and fieldbus conductors.
IP67 / IP69K
High-pressure washdown cleaning in food-industry and welding applications requires connectors and cable glands rated IP67 to IP69K.
Temperature Range
From −40 °C in cold storage rooms to +90 °C in welding cells. We select the jacket material (PVC, PUR, silicone, PTFE) based on your operating temperature.
“No off-the-shelf robot cables. Every connection we supply has been discussed with you in advance.”
KnorrTec — cable assembler, not a distributor.
03 · Made-to-Measure Assembly
From requirement to finished cable — starting at a single piece.
We are not a catalog supplier. Every cable we deliver was specified together with you and manufactured at our facility in Beratzhausen. That's the difference between a connection that holds — and one that fails.
Inquiry & Consultation
You describe your requirements: robot type, drive, cable routing, environment. We ask the right questions — and work with you to find the optimal cable specification.
Technical specification
Our team determines conductor cross-section, flex class, shielding design, sheath material, connector, and protection rating — documented as a drawing for your records.
Assembly
We manufacture in-house at our own facility — exactly your length, your connector, your print marking. From a single unit to series production, using the same materials and processes.
Testing & Delivery
Every cable is electrically tested. Delivered with a test report — on request with labeling and set packaging for direct installation in the cell.
No standard solution for your application?
Tell us about your robot cell — we will get back to you within 24 hours with a concrete recommendation.
04 · Applications
Three robotics segments — one source.
Whether a classic industrial robot, a collaborative robot, or a highly dynamic automation line — we know the specific cable requirements of each area and deliver the right cable assembly.
B.01
6-Axis Robotics
Welding robots, handling, painting — the right motor cable, encoder cable, and fieldbus connection for every axis. Torsion-resistant, matched to the robot's kinematics.
- Motor cables for axis drives
- Encoder Cables (SSI, EnDat, Resolver)
- Hybrid Cables: Power + Signal
- Fieldbus connectivity (Profinet, EtherCAT)
B.02
Collaborative Robotics
Cobots operate in tight cells close to people — cable routing must be compact, safe, and easy to maintain. We assemble cables to match these constraints.
- Compact motor cables (small cross-sections)
- IP67 connectors for easy replacement
- IO-Link and Profinet fieldbus cables
- Short custom lengths for tight cells
B.03
Servo Axes & Gantries
Linear axes and gantry systems travel the same path millions of times — the cable-carrier cable is the weakest link. We supply the right cable class for your dynamics.
- Cable-carrier cables by flex class
- Servo motor cables (4×1.5 mm² to 4×10 mm²)
- Encoder cables for linear encoders
- System cabling: control cabinet → axis
05 · Product Categories
The product range for robotics.
Motor cables
Power cables for servo and stepper motors — torsion-resistant, highly flexible, with a fitted connector matched to your connection contacts.
Encoder Cables
Encoder and feedback cables for SSI, EnDat 2.2, resolver, and Hiperface — shielded for maximum interference immunity in the robot cell.
Hybrid Cables
Power and signal in a single cable — reduces cable volume at tight robot axes and simplifies installation. For servo and linear drives.
Cable-carrier cables
For linear axes and gantry systems with millions of bending cycles — fine-wire strands to class 5/6 for continuous cable-carrier use.
Fieldbus connections
Profinet, EtherCAT, Profibus, CAN — assembled Industrial Ethernet and fieldbus cables with industrial RJ45, M12-D/X, or SubD connectors, to your required length.
Connectors
M8, M12, M23, SubD, Intercontec, and more — individually or as a complete cable assembly. Protection ratings from IP65 to IP69K for all robotics environments.
06 · Compatibility
Compatible with all common interfaces.
KnorrTec assembles cables independently of manufacturer — we adapt to the connectors, encoder protocols, and fieldbus standards already installed in your system, instead of tying you to a specific make.
07 · Standards & Certifications
Certified for industrial use.
Every robotics cable assembly is 100% electrically tested. Test reports available on request.
08 · Frequently Asked Questions
To robotics cable assembly.
From what quantity does KnorrTec produce custom cable assemblies?
From a single piece. There is no minimum order quantity. Whether it is a prototype for your first robot cell, a replacement cable for an existing system, or series production for your production line — we manufacture the quantity you need, with no surcharge for small quantities.
What exactly does “technical consultation up front” mean?
Before we assemble your cables, we clarify together: Which robot type, which drive manufacturer, which type of motion (linear, torsional, combined)? What ambient conditions (oil, temperature, IP requirements)? Which connectors are fitted on the robot? This conversation ensures that the cable set on first use fits — and does not need to be replaced after three months.
How long does a custom assembly take?
You will receive technical feedback and a quote within 24 hours after your inquiry. Prototypes are typically available in 1–2 weeks available. Series production depending on scope and material availability on request — we communicate delivery dates transparently and reliably.
What is the difference between a robot cable and a cable-carrier cable?
Cable-carrier cables are designed for linear bending movements — they flex in a single plane. Robot cables must additionally withstand torsional movements of ±180° over millions of cycles, as occur at axes 4, 5, and 6 of 6-axis robots. We advise on which cable class is right for your specific kinematics — and whether a combination of both makes sense.
Which robot manufacturers does KnorrTec supply compatible cables for?
We assemble manufacturer-independent for all common industrial robot and cobot systems. Since we are not tied to a particular make, we can also develop solutions for less common or older series — simply state the robot type and connector standard in your inquiry.
Robotics Inquiry
Cable set for your
Request a quote for your robot cell.
Tell us your robot type, drive, and operating conditions — we will get back to you within 24 hours with a technical recommendation and quote. From a single unit, with no minimum order quantity.