Views: 0 Author: Site Editor Publish Time: 2026-03-31 Origin: Site
Determine the circuit type
Single‑passage: media inlet and outlet are on opposite sides.
Dual‑passage: both inlet and outlet are on the same side.
Multi‑passage: multiple independent circuits for different media or multiple distribution points.
Define critical parameters
Number of passages
Media type (hydraulic oil, water, air, steam, coolant, etc.) – ensure compatibility between media if multiple are used.
Maximum working pressure
Maximum rotational speed (often inversely related to pressure)
Operating temperature range
Confirm connection details
Port size and thread type (NPT, BSP, MPT, etc.)
Connection style (threaded or flanged)
Rotation direction (if threaded connection)
Consider special requirements
Installation space constraints
Additional functions (e.g., through‑hole for cables, simultaneous electrical signal transmission)
Plan for safety & maintenance
Allow for leakage ports and ensure leakage fluids are properly collected.
Maintain filtration (typically ≤10 µm) to protect seals.
Parameter | Typical Range / Consideration |
|---|---|
Number of passages | 1 – 12+ (depending on design) |
Pressure | Up to 50 MPa (higher for special hydraulic models) |
Speed | 50 – 300 RPM (trade‑off with pressure) |
Temperature | Up to 70‑80 °C for standard seals; higher with special seals |
Media compatibility | Seals must match the media (NBR, FKM, PTFE, etc.) |
Brand | Type / Origin | Strengths | Typical Applications |
|---|---|---|---|
Mofelon | China – general purpose | Wide model range, good cost‑performance, widely used in industrial robots and rotary tables | Multi‑media transmission, packaging machinery |
Tengxuan | China – professional | Clear classification for high/low pressure and high/low speed | Machine tools, hydraulic machinery (ML / MR series) |
Kadant | USA – premium international | High reliability, long service life, suited for critical applications | Complex automated equipment with multiple media |
Wuquan | China – low‑cost pneumatic | Compact, economical, dedicated to pneumatic circuits | Automation fixtures, pneumatic control systems |
Xinxuan | China – custom‑oriented | Highly flexible for non‑standard dimensions and connections | Special machinery requiring custom interfaces |
FUXUAN (FOCUS) | China (Shandong Focus Machinery) | Strong customisation (OEM/ODM), CE/ISO certified, accepts small batches | Hydraulic systems, water cooling, general industry |
FUXUAN is a Chinese manufacturer offering two main product lines for multi‑passage rotary joints:
High‑pressure series
– Max pressure: ≤40 MPa
– Max speed: ≤50 RPM
– Media: air, oxygen, hydrogen, water, hydraulic oil, etc.
Medium/low‑pressure series
– Max pressure: ≤10 MPa
– Max speed: ≤100 RPM
– Media: water, air, hydraulic oil, brine, etc.
Common features:
Threads: NPT / BSP / MPT (left‑ or right‑hand available)
Materials: stainless steel or brass
Temperature: ≤70‑80 °C
Minimum order: 1 piece
Installation notes from the manufacturer:
Do not rigidly fix both the rotor and the housing – allow one side to float to compensate for misalignment.
A torque arm must be used; do not rely solely on flexible hoses to prevent rotation.
Only use with media compatible with the seal and bearing materials.
Cleanliness – Thoroughly clean all pipes and the joint before installation to remove debris.
Concentricity – Align the housing and the shaft carefully to avoid vibration during operation.
Seal compatibility – Verify that seal materials (NBR, FKM, PTFE, etc.) are suitable for the media and temperature.
Torque arm – Always provide an effective anti‑rotation device.
Leakage management – If the model has a leakage port, keep the drain line unobstructed and free of back pressure.
If you have detailed operating conditions (media, pressure, speed, number of passages, space constraints), you can:
Contact the brands directly for a formal quotation.
Request a customised solution from manufacturers like FUXUAN / FOCUS if standard products do not fit your requirements.
For further assistance, please provide your specific parameters and I can help narrow down the suitable models.
Note: The previously mentioned “FOCUS (焦点)” rotary joint could be identified as a mainstream industrial product. If you have a product sample or datasheet, please share it for a more accurate assessment.
