LHK030-2Y series hollow hydraulic rotary joint 2 channels hydraulic and hole diameter 30mm
LHK030-2Y puts 2 circuits through a 30 mm bore without limiting rotation. Power and signals cross the joint through sliding precious metal contacts, so the moving assembly can turn indefinitely in either direction.
LHK030-2Y at a Glance
LHK030-2Y puts 2 circuits through a 30 mm bore without limiting rotation. Power and signals cross the joint through sliding precious metal contacts, so the moving assembly can turn indefinitely in either direction.
- Ø30 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 30 mm interface
The 30 mm bore lets the shaft, cable bundle or air line pass straight through the axis, 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
Machine builders working on rotary tables, wrapping and filling machines, drilling and subsea tools, antenna positioners and process equipment.
Application scenarios
- Any continuously rotating axis
Three Failures It Removes
Failure 1
Cables that have to follow a rotating part fail at the flex point, and the failure always happens in production rather than on the bench.
Failure 2
Slip rings that need periodic servicing pull a machine out of production for a job that should never have been on the schedule.
Failure 3
Adding one more circuit late in a project means a new ring stack, which is why circuit headroom is worth specifying at the start.
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.
| Model code | LHK030-2 |
|---|---|
| Bore diameter | 30 mm |
| Product family | Rotary Joints |
| Manufacturer | JiuJiang Ingiant Technology Co., Ltd, Jiujiang, Jiangxi, China |
| Standard lead time | 7–15 days |
| Warranty | 12 months from date of sale |
The parameter table for this model is issued with the quotation because the build is set against the customer drawing. Send your requirement and the datasheet comes back with the price.
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
- Bore 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
A capsule unit is smaller but leaves nothing free at the centre of the axis. Choose the through bore format when a shaft, a cable bundle, an air line or a fibre has to pass straight through the joint.
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.
Related Models
Other models in the same family and nearby sizes.
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About LHK030-2Y
How many circuits does LHK030-2 have?
This build has 2 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 30 mm in the model number refer to?
It is the bore diameter. In LHK030-2 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 LHK030-2Y
Tell us the application and the quantity. A standard unit ships in 7–15 days; a modified build comes back with a drawing first.