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The H-Type Rotary Joint (often referred to as a water rotary joint or cooling water rotary joint) is specifically designed for industrial cooling systems. It is an ideal solution for transferring water, air, or hydraulic oil from a stationary pipe into a rotating roller or drum.
Key advantages for your customers:
Superior Sealing Technology: Features a balanced mechanical seal design and uses high-precision sealing faces (e.g., silicon carbide, tungsten carbide) which provide excellent wear resistance and are tolerant to rust and scale in water systems.
Reliable Performance: Built with high-precision rolling bearings and robust materials like brass or stainless steel, ensuring a long service life and low friction torque even under demanding conditions.
Industry Versatility: Widely used across many industries, making it a staple product with consistent demand.
Steel mills (for cooling rolls)
Rubber and plastic processing (calenders, internal mixers)
Papermaking, textile, and chemical industries
This breakdown helps customers quickly identify the right model. The naming convention is primarily based on flow direction and connection type.
Category | Series/Model | Description | Typical Use Case |
|---|---|---|---|
Single Flow | HD Series | Single passage for medium to flow into the rotating equipment. | Simple cooling applications. |
Dual Flow | HS-G Series | Dual passage for medium to flow in and out. | More efficient cooling with a dedicated return path. |
Dual Flow | HS-X Series | Dual passage with a rotating inner pipe. | Applications requiring the inner pipe to rotate with the drum. |
Connection Type | Suffix "-F" | Indicates a flanged connection. | High-torque or high-pressure applications where a more rigid connection is needed. |
Naming Example | HS-XF40-20 | Dual flow (HS), rotating inner pipe (X), flange connection (F). Outer pipe dia. 40mm, inner pipe dia. 20mm. | A demanding application requiring both supply and return flow with a flange connection. |
Parameter | Standard Range | Notes / Options for Customization |
|---|---|---|
Max. Pressure | ≤ 1.0 MPa | Standard model. Higher pressure options are available upon request. |
Max. Speed | ≤ 1000 RPM | Standard model. High-speed versions (e.g., up to 3000 RPM) are available. |
Max. Temperature | ≤ 100°C | Standard model. High-temperature versions (e.g., up to 180°C or 250°C) are available. |
Media | Water, Air, Hydraulic Oil, Salt Water, Coolants | Versatile for many common industrial fluids. |
Materials | Brass, Copper Alloy, or Stainless Steel | |
Connection Size | Ranging from DN10 (3/8") to DN80 (3") | Thread standards include BSPT, BSP, NPT, etc. |
Connection Type | Threaded or Flanged | The "-F" suffix indicates a flanged connection. |
Emphasize Shandong Focus Machinery's ability to handle non-standard requirements. This is a key differentiator.
Standard Modifications: We can modify standard products, such as changing housing/shaft dimensions, seal materials, mounting configurations, and connection types .
Tailored Design: If a standard product isn't suitable, our team can design and manufacture a complete custom solution to meet exact performance, cost, and delivery requirements .
Contact for Customization: For any custom product request, customers are encouraged to contact us directly for a quick quote.
To assist in initial inquiries, below are the technical parameters for some common models. For complete dimensional drawings, please contact us directly.
Typical Standard Model Specifications:
Model | Connection Size | Max. Speed | Max. Pressure | Max. Temperature | Media |
|---|---|---|---|---|---|
HD/HS-G/HS-X | 1/8" to 4" | ≤ 1000 RPM | ≤ 1.1 MPa | ≤ 120°C | Water, Air, Hydraulic Oil |
High-Speed/High-Pressure Variant | Customizable | ≤ 5000 RPM | ≤ 10 MPa | ≤ 260°C | Water, Air, Hydraulic Oil |
Dimensional Reference (in mm) for Threaded H-Type Joints:
Size | K | M | L1 | L2 | L3 | L4 | SW | d |
|---|---|---|---|---|---|---|---|---|
15A (1/2") | R1/2" | Ro1/2" | 111 | 96 | 36 | 15 | 22 | 15 |
20A (3/4") | R3/4" | Ro3/4" | 123 | 105 | 40 | 18 | 24 | 17 |
25A (1") | R1" | Ro1" | 138 | 116 | 46 | 20 | 30 | 21.6 |
40A (1-1/2") | R1-1/2" | Ro1-1/2" | 173 | 144 | 53 | 21.4 | 45 | 36 |
50A (2") | R2" | Ro2" | 225 | 189 | 65 | 25.5 | 59 | 48 |
Note: Dimensions are for reference. Please consult with our team for exact specifications.
To qualify leads and provide accurate recommendations, use a structured inquiry form. This helps both the sales team and the customer.
Inquiry Parameter | Customer's Details |
|---|---|
Application | (e.g., Steel mill cooling roll, Rubber calender) |
Media | (e.g., Water, Air, Hydraulic Oil) |
Max. Operating Pressure | (e.g., 0.8 MPa) |
Max. Operating Speed | (e.g., 800 RPM) |
Max. Operating Temperature | (e.g., 80°C) |
Number of Flow Passages | (e.g., Single Flow "HD", Dual Flow "HS") |
Connection Size & Type | (e.g., 1" BSPT Thread, Flanged DN40) |
Desired Housing Material | (e.g., Brass, Stainless Steel) |
Q: How do I choose the right model?
A: Proper selection depends on your application's operating parameters. This includes pressure, speed, media type, the number of flow passages needed, and the connection size/type. Contact our experts for assistance.
Q: Do you offer custom rotary unions?
A: Yes, custom solutions are our specialty. We can modify our standard products or create a completely custom design for your exact requirements.
Q: What is the difference between HD and HS types?
A: HD models provide a single flow path for the media to go into the rotating equipment. HS models provide a dual flow path, allowing media to flow in and out of the equipment, which is often used for more efficient cooling.
Q: What does the "-F" suffix mean?
A: The "-F" suffix indicates that the outer pipe connects to the equipment via a flange instead of a thread, such as in the HS-XF40-20 model.
Q: What materials are available for the housing?
A: Standard housing is made of brass for good corrosion resistance. We also offer stainless steel for applications requiring higher corrosion resistance or compliance with certain standards.
Q: What is the standard threading for your joints?
A: The standard threading is typically BSPT for the outer pipe connection and BSP for the inner pipe connection, but we can supply with NPT threads upon request
Annie Ben
Focus Machinery Rotary Joint
WeChat 0086 13869496275
Email: annie@focusesmachinery.com
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Company：Shandong Focus Machinery Co.,Ltd.
Contact: Annie Ben <Sales Director>
Tel/WeChat: 0086-138-6949-6275
WhatsApp/Facebook: 0086-138-6949-6275
Email: annie@focusesmachinery.com
Website: https://focusesmachinery.com/
Made In China Site：https://membercenter.made-in-china.com/
Alibaba: https://china-focus.en.alibaba.com/
Add: No. 988 Xingteng East Road, Shannan Street, Zaozhuang, Shandong, China
