External Swivel Joint & Double Support Spring Reel
The external swivel joint is positioned outside the main reel assembly and can be installed on either the left or right side. This configuration is particularly useful for equipment requiring symmetrical installation or different hose connection directions. The external arrangement also makes the swivel joint easier to access during installation and maintenance. The swivel joint can be selected according to the working medium and connection requirements. A high-durability swivel joint configuration is available with a rated service life of up to 500,000 rotational cycles, making it suitable for applications involving frequent reel rotation and repeated hose operation.
Structural Engineering & Mechanical Features
High-Strength Spring System
The reel uses a spring-driven mechanism to automatically retract the hose after it has been pulled to the required working position. Two spring configurations can be selected according to application requirements:
- Heavy-duty spring: suitable for applications requiring hose retraction while the hose remains pressurized, subject to the specified working conditions.
- Standard spring: a more economical configuration for applications where pressure-assisted retraction is not required.
Spring force is matched to the hose length, hose weight, and reel capacity to provide controlled retraction without excessive pulling force.
Double Support Reel Structure
The reel drum is supported from both sides by a rigid support bracket. This double-support structure distributes the mechanical load across the frame and helps maintain stable drum rotation during repeated extension and retraction.
The reel drum is manufactured using a stamping process, allowing the structure to remain relatively lightweight while providing sufficient mechanical strength for mobile and vehicle-mounted applications. The combination of a stamped reel drum and double-side support makes the reel suitable where installation weight and structural stability both need to be considered.
Corrosion-Resistant Surface Treatment
The reel can be finished using powder coating and galvanizing processes according to the component and application requirements. These surface treatments provide protection against general corrosion and help the reel withstand exposure to oil contamination, moisture, dust, and routine workshop conditions.
For vehicle-mounted applications and outdoor service environments, the surface treatment can be selected according to the expected exposure conditions. Additional component protection can also be considered for specific operating environments.
Ratchet Locking & Working Length
A ratchet locking mechanism allows the hose to stop at designated positions during extension. The operator can pull out the hose to the required working length and keep it in position rather than continuously holding the hose against the spring force.
Practical Benefits:
- Multiple selectable working lengths
- Controlled hose extension
- Reduced unnecessary hose movement
- Easier operation during maintenance work
- Better hose organization after use
When the locking mechanism is released according to the reel configuration, the spring system retracts the hose back onto the drum.
Multi-Direction Guide Frame
The guide frame provides multiple hose outlet directions, allowing the reel to adapt to different installation positions and working areas.
Instead of requiring the hose to leave the reel from only one fixed direction, the guide assembly can be configured to accommodate different routing requirements. This is particularly useful for vehicle-mounted equipment where the available installation space and hose operating direction may vary.
The guide frame also helps control the hose path during extension and retraction, reducing unnecessary bending and improving winding consistency.
Technical Specifications
| Item | Specification |
|---|---|
| Product Type | Double Support Spring Reel |
| Drive System | Spring-driven automatic rewind |
| Support Structure | Double-side support |
| Reel Drum | Stamped steel construction |
| Swivel Joint | External type |
| Swivel Installation | Left or right side |
| Swivel Joint Life | Up to 500,000 rotational cycles |
| Spring Options | Heavy-duty / standard spring |
| Locking System | Ratchet locking |
| Guide Frame | Multi-direction outlet |
| Surface Treatment | Powder coating / galvanizing |
| Working Medium | Air, water or compatible media |
| Hose Length | Customized |
| Hose Diameter | Customized |
| Mounting | Vehicle / wall / equipment mounting |
| Customization | Available |
Final specifications depend on hose type, dimensions, working pressure, spring configuration, installation method, and customer requirements.
Vehicle & Industrial Applications
The compact double-support construction makes this spring reel particularly suitable for vehicle-mounted applications where equipment needs to withstand movement while maintaining a controlled hose storage system. Typical applications include:
Customization
The Double Support Spring Reel can be configured according to the customer's hose, equipment, and installation requirements. Custom options include hose length, hose diameter, connection size, swivel joint configuration, spring type, mounting bracket, guide direction, surface treatment, and product identification.
For OEM projects, customers can provide equipment drawings, installation dimensions, hose specifications, working pressure, and required working length. The reel configuration can then be matched to the actual operating conditions.
FAQ
Can the swivel joint be installed on either side?
Yes. The external swivel joint supports left-side or right-side installation, making the reel suitable for symmetrical equipment layouts.
What is the service life of the swivel joint?
The high-durability swivel joint configuration can provide up to 500,000 rotational cycles, depending on the specified operating conditions.
What is the difference between the two spring options?
The heavy-duty spring configuration can be selected for applications requiring retraction while the hose remains pressurized, while the standard spring provides a more economical solution for conventional applications.
Can the hose stop at different working lengths?
Yes. The ratchet mechanism provides locking positions so the operator can select an appropriate working length.
Is it suitable for vehicle installation?
Yes. The double-support structure and stamped reel drum provide a lightweight and rigid construction that is particularly suitable for vehicle-mounted equipment.
Can the outlet direction be customized?
Yes. The guide frame can be configured to meet different hose outlet and routing requirements.
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