
Waterproof Slip Ring Ø78mm OD IP65/IP68 – Custom Sealed Rotary Joint for Marine & Industrial Use
Waterproof is a rotating slip ring built around a 78 mm envelope and current per circuit circuits. The stator stays with the frame and the rotor turns with the machine, so the wiring on the moving side keeps its connection through unlimited 360° rotation.





Waterproof at a Glance
Waterproof is a rotating slip ring built around a 78 mm envelope and current per circuit circuits. The stator stays with the frame and the rotor turns with the machine, so the wiring on the moving side keeps its connection through unlimited 360° rotation.
- current per circuit circuits
- Ø78 mm
What This Model Gives the Machine
Unlimited rotation without cable wind-up
The rotating side keeps its electrical connection through continuous 360° turning, so the machine never has to stop and unwind.
Maintenance-free contact system
Precious metal contact pairs are designed to run without lubrication or servicing for the rated life, so there is nothing to schedule on this axis.
Fits a 78 mm interface
The 78 mm envelope keeps the joint inside the space the assembly already has, so the surrounding design does not have to change.
Stable transmission under vibration
The contact geometry is designed so that shock and vibration do not translate into resistance variation on the signal rings.
Backed by a 12 month warranty
12 months from date of sale; free repair or replacement for quality problems not caused by human damage
Engineers Who Specify This Part
OEM engineering teams, defence and research institutes, special machine builders and integrators who cannot design around a catalogue part.
Application scenarios
Three Failures It Removes
Failure 1
Rotation limited to ±180° forces an unwind move into every cycle, and that time is lost on every part the machine makes.
Failure 2
A rotating joint that is not sealed for its environment lets dust or wash water reach the contact surfaces, and the symptom looks like an electrical fault.
Failure 3
Sourcing several rotating joints for one axis multiplies lead times and alignment tolerances.
Materials Contacts and Construction
Build
Specifications for this model are set against the customer's drawing. Send your requirement and the datasheet is issued with the quotation.
Full Parameter Table
Values published for this model. Anything in this table can be changed on a customised build.
| Body diameter | 78 mm |
|---|---|
| Product family | Customized Slip Rings |
| Manufacturer | JiuJiang Ingiant Technology Co., Ltd, Jiujiang, Jiangxi, China |
| Standard lead time | 7–15 days |
| Warranty | 12 months from date of sale |
| Number of circuits | current per circuit |
How the Unit Is Built and Checked
Machining runs on the in-house CNC centre across roughly 6000 m² of research and production space, and assembly is done by the production team in Jiujiang.
Before despatch each unit is checked for insulation resistance, insulation strength, dynamic resistance variation and functional signal performance, using the test equipment and procedures held under the ISO 9001 and GJB9001C quality systems.
Certifications
- ISO 9001
- GJB9001C
- GB/T 19001-2008 / ISO 9001:2008
What Can Be Changed on This Build
- Circuit count, and the current and voltage rating of each ring
- Body diameter, overall length and mounting interface
- Added channels — Ethernet, USB, HD-SDI, optical fibre, RF coaxial, pneumatic or hydraulic passages
- Sealing grade from IP51 to IP68, and housing material
- Lead length, lead specification, connector termination and outlet direction
- Quality grade S Standard, I Industrial or P Premium against the revolutions expected
Simple customisation 10–20 days. Complex customisation 15–40 days.
How It Compares With the Other Formats
The alternative formats are the capsule, the through bore and the separate rotor and brush assembly. Which one is right depends on whether anything has to pass through the centre of the axis and how much space is left around it.
Fitting and Commissioning
Mount the stator, not the load
Fix the stator to the frame through the flange or the anti-rotation arm and couple the rotor to the rotating part. The slip ring must never be used as a bearing — the machine's own bearing carries the load.
Respect the lead route
Leave a service loop at both ends and keep the bend radius above the cable's own minimum. Most field failures start at a lead that was pulled straight.
Separate power and signal runs
Route the power leads and the signal leads apart from each other after they leave the unit, and ground the shield at one end only.
Commission at low speed
Turn the assembly by hand first, check continuity on every circuit, then run up to speed and confirm the signal quality before the machine goes into production.
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About Waterproof
How many circuits does this model have?
This build has current per circuit circuits. The ring count can be changed on a customised build — send the number of single wires that have to cross the joint.
What does the 78 mm in the model number refer to?
It is the outside diameter of the body. In the model code the digits after the series letters give that dimension in millimetres, and the number after the dash is the circuit count.
How long does delivery take?
Standard products ship in 7–15 days. Simple customised products take 10–20 days and complex customised products take 15–40 days. The delivery port is Jiujiang, China Mainland.
Can this model be modified for my machine?
Yes. Send the rotating speed, the installation type and size, the circuit count, the voltage and current per ring, the signal types and their parameters, the operating temperature and the IP requirement, and the unit is redesigned around them.
Get a Price and Lead Time for Waterproof
Tell us the application and the quantity. A standard unit ships in 7–15 days; a modified build comes back with a drawing first.








