The HT3899 series through-bore slip ring features a bore diameter of 38.1mm, an outer diameter of 99mm, and 1–72 channels. It is designed for equipment that requires continuous 360° rotation while transmitting power, signal, or data between stationary and rotating parts.
This series supports signal transmission at 2A, as well as power transmission at 5A or 10A, with a rated voltage of 380VAC / 24VDC. With its standard through-bore structure and flexible circuit combinations, it is suitable for shaft-mounted rotating systems, rotary tables, industrial automation equipment, packaging machinery, testing systems, and other medium-size rotating applications.
Custom options are available for circuit number, current capacity, signal type, wire length, connector type, housing material, protection grade, and working environment.
| Item | Specification |
|---|---|
| Product Type | Through-Bore Slip Ring |
| Bore Diameter | 38.1mm |
| Outer Diameter | 99mm |
| Number of Channels | 1–72 channels |
| Transmission Type | Power / Signal / Data |
| Current | 2A signal / 5A / 10A power |
| Rated Voltage | 380VAC / 24VDC |
| Working Speed | 0–300RPM |
| Contact Material | Precious Metal |
| Lead Wire Length | Stator / Rotor: 300mm |
| Protection Grade | IP51 |
| Insulation Resistance | ≥500MΩ@500VDC |
| Custom Options | Circuits, current, signal type, wire length, connector, housing, IP grade |

To select a suitable model, please confirm the following information:
Bore size
Number of circuits
Current and voltage requirements
Signal type, such as Ethernet, RS485, CANBus, USB, sensor signal, etc.
Working speed
Installation space
Wire length or connector requirements
Working environment and protection grade
Whether power, signal, data, pneumatic, hydraulic, RF, or fiber optic integration is required
If you are not sure which model is suitable, please send us your equipment requirements. Our engineers can help recommend a suitable slip ring solution.

38.1mm through-bore design, suitable for shaft-mounted rotating equipment
99mm outer diameter for medium-size industrial rotating systems
Supports power, signal, and data transmission in one unit
Flexible circuit combinations from 1 to 72 channels
Supports mixed transmission of power and industrial signals
Compatible with Ethernet, RS485, USB, CANBus, sensor signals, and other common industrial signals
Precious metal contact design for stable electrical performance
Designed for continuous 360° rotation in industrial equipment
Customizable circuits, current, wire length, connector type, protection grade, and signal type
| Application | Typical Use |
|---|---|
| Industrial Automation | Used in rotating platforms, indexing tables, and automated machinery |
| Rotary Tables | Allows continuous rotation while maintaining stable electrical connection |
| Packaging Machinery | Transfers power and control signals in rotating parts |
| Test Equipment | Supports stable signal transmission in rotating test systems |
| Robotics | Suitable for rotating joints or equipment requiring power and signal transmission |
| Construction Machinery | Used in rotating structures requiring reliable power and signal transmission |
| Exhibition / Display Equipment | Used in rotating display platforms and moving display systems |
| Marine & Offshore Equipment | Suitable for rotating systems requiring stable power and signal transfer |
Bore size
Number of circuits
Current capacity
Voltage rating
Signal type
Wire length
Connector type
Housing material
Protection grade
Working speed
Working temperature
Integration with pneumatic, hydraulic, RF, or fiber optic rotary joints
If the standard model does not meet your requirements, please send us your application details, including bore size, circuit number, current, voltage, signal type, working speed, installation space, and operating environment.
Our engineers can help confirm the suitable model or provide a customized through-bore slip ring solution according to your equipment requirements.
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