This small inner hole slip ring features a 9mm inner diameter, making it ideal for compact rotary applications, like ultrasonic probes and precision instruments. With multi-channel design, it supports specific signal transmission like RS485, CAN-Bus, etc. When in use, the slip ring rotates with the shaft of the equipment, with a maximum speed of 500 rpm.
360° continuous rotation
The annular conductive ring of small inner hole slip ring is installed around the rotating shaft, and the brushes are in continuous sliding contact with the conductive ring. Its rotor rotates 360° without being limited by the rotation range of the device.
Reinforced insulation
It is equipped with a POM shell and maintains electrical insulation through rubber and plastic insulators at the connection of components. This can reduce the frequency of leakage current and short circuit.
Multi-channel integration
The slip ring adopts a micro-structure design and has up to 20 channels. It can be quickly integrated into the device and integrate the internal chaotic lines.


Mechanical
Working speed |
500rpm |
Operating temperature |
-40℃~ +100℃ |
Contact material |
Precious metal |
IP Grade |
IP 54 |
Electrical
Circuit |
8 & 12 & 18&20 |
Current |
2A |
Voltage |
≤380V |
Dielectric strength |
≥1000V@50Hz between each circuit |
Insulation resistance |
1000MΩ@ 500VDC |
Electric noise |
≤7mΩ |
Lead wire size |
26AWG, UL, color Teflon, silver or tin plated |
Lead wire length |
200mm |
Dimension
TYPE |
Rings |
Length |
ID |
OD |
BHT0932-8 |
8 |
28.4mm |
Φ9mm |
Φ32mm |
BHT0932-12 |
8 |
35.6mm |
Φ9mm |
Φ32mm |
BHT0932-18 |
12 |
46.4mm |
Φ9mm |
Φ32mm |
BHT0932-20 |
12 |
50mm |
Φ9mm |
Φ32mm |
Q: What communication protocols do your slip rings use?
A: Our slip rings have a wide range of channel and current transmission options, compatible with common protocols such as Ethernet, Ethercat, Devicenet, Profibus, CanBus, and other special types, such as USB3.0. Please contact us for more information.
Q: Can your slip rings be customized?
A: Of course, we not only support customized slip rings, but also provide personalized design solutions according to your equipment and application requirements. For example, the standard inner hole of our through-hole slip rings can vary from 3 mm to 300 mm.
Q: How do you ensure the quality of slip rings?
A: We have a strict production management system, and every step meets ISO standards. In addition, our products have passed many international quality certifications, such as CE, RoHS, UL, SGS.
https://www.bt-slipring.com/