High Temperature Slip Ring NHG1233

Slip rings of the NHG1233 series are specially fit for high temperature 100℃~250℃ working environment such as hot roller, heating device. Grand applies noble precious metal reduced noises and interference between circuits, low friction torque assures long life-span.

NHG1233 series with through hole 12mm, OD33mm, suitable for rotating application which requires a through hole ≤12mm, standard model supports 1-12rings signal(0~2A/ring).


Electrical DataMechanical Data
Rated Current2~5A/ringMax. Speed0-250RPM
Rated Voltage0~240VAC/VDCWorking Temperature-20℃~+250℃
Insulation Resistance≥500MΩ/500VDCWorking Humidity0-85% RH
Dielectric Strength500VAC@50Hz,60sStructure MaterialEngineering plastic
or metal
Wire SizeSliver plated Teflon AWG26Contact materialPrecious metal
Wire LengthStandard 500mm(adjustable)Protection levelIP51
Dynamic Resistance<0.01Ω
Operating Torque0.1N•m within 6 rings, increase 0.03 N•m for every 6 rings added


ModelNo. of RingsRated CurrentRated VoltageLength L(mm)

Typical drawing

high temperature slip ring drawing


◆ Multi-point brush contact material ensure long life

◆ Integrated structure design for easy installation

◆ Standard model supports 1-96rings power or signal (0~20A/ring)

◆ IP 51 (IP54-IP68 can be customized)

◆ Both the data bus agreement compatible

◆ Free maintenance


◆ Optional for underwater IP65, IP68 operation speed, current &voltage

◆ No. of rings

◆ Connector

◆ Housing material

◆ Position of wire outlet, wire length

◆ Protection level (dust and water)

◆ Optional for flange mounting

◆ Support integrated high speed data transmission(including Ethernet, USB, Profibus, Ethercat, CANOPEN, CANBUS, RS232, RS485, etc.)

◆ Hydraulic rotary joints, FORJ and electric slip ring can be integrated

Typical application

◆ Automatic machines

◆ Robotics, rotary sensors, urgent illumination equipment

◆ Roller

◆ Packaging

◆ Heating device

◆ Medical, pharmaceutical equipment

◆ Converting machines

◆ Capping machines

◆ Labeling machines

◆ Filling machine

◆ Machine tools

Model designation

high temperature slip ring name

Lead wires color code