Industrial Bus Slip Rings (Profinet, EtherCAT, CANbus)
Eliminate PLC communication errors and data loss on rotating machinery. Transmit high-speed industrial Ethernet and fieldbus signals smoothly through 360° continuous rotation.
No Machine Stops. No Signal Noise. Just Clean Data Flow.
When a rotary table or robot arm turns, low-quality slip rings create electrical noise jumps. These jumps ruin data signal waveforms, forcing your PLC to throw network fault alarms and stop the production line.
JARCH Industrial Bus Slip Rings fix this issue at the engineering source. Using gold-to-gold contacts, 100Ω / 120Ω impedance matching wires, and heavy internal metal shields, dynamic contact noise stays below 5 mOhm. Your motor signals and Ethernet data run smoothly without dropping a single packet.
Engineering Problems We Solve
1. Stop Network Fault Stops
The Problem: Bended signal waveforms cause PLC E-Stop communication errors.
JARCH Solution: Strict 100Ω / 120Ω characteristic impedance matching keeps data shapes clean for zero packet loss.
2. Block Electric Power Noise
The Problem: High voltage motor power lines leak noise into delicate communication lines.
JARCH Solution: Heavy metal wall barriers isolate power from data wires, keeping signals completely quiet.
3. Plug and Play Design
The Problem: Soldering network cables on-site is slow and prone to wiring mistakes.
JARCH Solution: Pre-installed M12 (D-coded / X-coded), RJ45, or DB9 plugs connect straight to your PLC.
Customization & Tailored OEM Solutions
Every industrial machine has unique space and cable demands. At JARCH, we engineer custom bus slip ring solutions tailored to your exact project requirements:
1. Hybrid Pneumatic & Fluid Channels
Combine industrial bus lines, 100A power circuits, and compressed air / hydraulic pass-through in one single compact housing.
2. Custom Connectors & Pinouts
Specify any connector type: M12 (D-coded, X-coded, A-coded), RJ45, Harting industrial plugs, DB9, or military-grade connectors.
3. Extreme Temperature Options
Engineered for harsh environments with operational temperature ranges from ultra-cold -55°C up to high-temp +120°C.
4. High Ingress Protection (IP68)
Fully sealed stainless steel or anodized aluminum housings with IP65, IP67, or IP68 protection for underwater and outdoor use.
Supported Protocols & Technical Parameters
Check our protocol capabilities to match your automation control system:
| Bus Category | Supported Protocols | Cable & Connector Specifications |
|---|---|---|
| Industrial Ethernet | Profinet, EtherCAT, Ethernet/IP, CC-Link IE, Modbus TCP | Cat5e / Cat6 double-shielded cables; M12 (D-coded/X-coded) or RJ45 plugs; 100 Mbps / 1 Gbps speed |
| Fieldbus Networks | Profibus-DP, CANopen, DeviceNet, CC-Link | 120Ω / 150Ω bus cable; DB9 or M12 connectors; Baud rate up to 12 Mbps |
| Encoder Signals | SSI, BiSS-C, RS422, RS485, Modbus RTU | Shielded twisted pairs for precise motor encoder position feedback |
| Power & Signal Combo | 2 to 48 Wires (Power up to 600V / 50A + Bus Signals) | Combines motor power, sensor wires, and data bus into 1 compact housing |
| Mechanical Specs | Speed: 0-300 RPM; Temp: -30°C to +80°C; Protection: IP54 / IP65 / IP68 | Through-bore hollow shaft or flange mounting; Customized dimensions |
Need a Special Shaft Size or Custom Connector Wiring?
Send us your mechanical drawings and PLC specifications. Our technical team delivers custom drawings in 24 hours.
4 Simple Steps to Order Your Bus Slip Ring
When contacting our engineers for a custom quotation, please provide:
- Which bus protocol do you use? (e.g., Profinet, EtherCAT, CANopen, RS485)
- Which connectors are required? (e.g., RJ45, M12 D-coded 4-pin, or open wire leads)
- Are extra power channels needed? (e.g., 4 wires x 10A motor power + 1 Profinet line)
- Mechanical mounting limits: (e.g., Through-bore hole diameter or outer dimensions)
Where Our Slip Rings Are Used
Robot End Grippers (EOAT)
Passes EtherCAT / Profinet signals to 3D vision cameras and pneumatic grippers on rotating 6-axis robot arms.
Rotary Index Tables
Connects remote I/O blocks and valves on 360° turning automation tables back to Siemens or Beckhoff PLCs.
Wind Power Pitch Systems
Sends CANbus / Profibus control data between the stationary nacelle and turning propeller blades.
Always ground the metal shield layer of your cable to the machine body. Keep bus cables separated from unshielded high-voltage power lines outside the slip ring to avoid external electric noise.
Frequently Asked Questions
Q1: Why does my PLC show error stops when using cheap slip rings?
Cheap slip rings have high resistance jumps when rotating. This distorts the high-speed bus signal waveform and causes PLC communication drops. JARCH slip rings use gold contacts and impedance control to keep electrical noise under 5 mOhm for zero data loss.
Q2: Can I run 380V motor power and Profinet signals inside the same slip ring?
Yes. We put thick metal shield walls inside the slip ring to separate power lines from data wires. Electric noise from motor power lines cannot cross over into your communication cables.
Q3: Do you offer pre-wired connectors like M12 or RJ45?
Yes. We can supply pre-installed M12 (D-coded 4-pin or X-coded 8-pin), RJ45 network plugs, or DB9 connectors so you can plug directly into your PLC or switch without soldering.