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Hollow Shaft Rotary Union

20mm Hollow Shaft Electrical Rotary Union Slip Ring Electrical Support 4~6mm Pipes

  • Place of Origin:


  • Brand Name:


  • Certification:

    CE, ISO9001

  • Model Number:


  • Product Details

Product Name:

Electrical Rotary Union

Hollow Shaft Size:




Pipe Size:

4~6mm Pipe, M5quot; Port

Working Temp.:


Work Humidity:

0~85% RH

  • Product Description

IP51 Electrical Rotary Union Support 2 M5 Port For 4~6mm Pipes

Description of 3402004 Hollow Shaft Slip Ring

1. Dual passage design: The rotary joint has two passages, allowing for the simultaneous transmission of multiple gas media without interference.

2. Wide range of media transmission: The rotary joint can transmit compressed air, steam, vacuum, and other gas media, making it suitable for a variety of industrial applications.

3. Support for mixed transmission of currents: In addition to gas media, the rotary joint also supports the mixed transmission of various currents ranging from 2A to 800A, providing flexibility in system design.

4. Support for 4mm and 6mm air pipes: The rotary joint supports both 4mm and 6mm air pipes, providing flexibility in system design and allowing for the transmission of gas media.

5. Small size and light weight: The rotary joint's small size and lightweight design make it easy to install and maintain.

6. Low torque: The rotary joint has low torque, reducing the energy required to rotate the system and improving overall system efficiency.

Technical Specification of 3402004 Hollow Shaft Slip Ring

Passages(Gas)2 passages
Pipe Size4~6mm pipe, M5quot; Port
Mechanical Data
Working life20millions for ref(depends on working conditions)
Max. Operating Speed250RPM continously, 1000RPM intermittently
Working temp.-30°C~80°C
Work humidity0~85% RH
Contact MateriaPrecious Metal
Housing Materialaluminum alloy
IP GradeIP51
Max. Operating PressurePositive Pressure 1Mpa, Vacuum -90kPa
Electrical Data
Voltage range0~440VAC/VDC0~440VAC/VDC
Insolution resistance<500M&Omega;/300VDC<500M&Omega;/300VDC
Lead wire spec.AWG17# Silver-plated teflon wireAWG22# Silver-plated teflon wire
Lead wire lengthstandard 250mm
(can be customized)
Insolution resistance500VAC@50Hz,6s
Electrical noise<0.01&Omega;

Features of 3402004 Hollow Shaft Slip Ring

1. Can be installed with mechanical arm to rotate together ;

2. Support transmitting mixed power and signals, such as USB, HDMI, 1000M ethernet, VGA, DVI, coaxial RF (high frequency), servo motor signal, industrial bus slip rings...etc;

3. 360° transmits compressed air, steam, vacuum, negative pressure, positive pressure...etc;

4. Max. Pressure(s):1Mpa (vacuum: -100kPa, higher Pressure can be customized);

5. Support 2 M5 port for 4~6mm pipes;

6. Standard hollow shaft size 20mm.

The rotary joint's low torque can improve overall system efficiency in a few ways. First, it reduces the energy required to rotate the system, which can result in lower power consumption and energy cost savings. Second, it can reduce wear and tear on the rotating components of the system, such as motors and bearings, which can extend their lifespan and reduce maintenance costs. Finally, low torque can improve the accuracy and precision of the system, which is particularly important in applications that require precise positioning or control.

By using a rotary joint with low torque, the overall efficiency of the system can be improved, resulting in cost savings and improved performance. This is especially important in industrial applications where energy costs and maintenance expenses can be significant factors.

Part no. description

3402004 series 3402004 Series Two Passage Hollow Shaft Rotary Unions slip ring description


HF Series High Frequency Coaxial RF Rotary Joint

Standard model list

ModelPassages(Gas)Port SizePipe Size
34020042 passagesM54&sim;6mm
Coaxial RF Small Electrical Slip Ring Connectors Rotary Union 2
Standard model list
ModelPassages(Gas)Port SizePipe SizePower/Signal(5A/10A)Length L(mm)
3402004-06052 PassagesM54&sim;6mm634.5
3402004-12052 PassagesM54&sim;6mm1252.5

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Service hotline


Phone:+86 18100274370


ADDRESS:No.36 Xingda Road, Yanchuan Community, Yanluo Street, Bao'an District, Shenzhen

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