K-Series Configuration at a Glance
The K-Series is available in different combinations of hose diameter, hose length, reel size, and hose/no-hose configuration.
For hose-equipped models, the available hose inside diameters are 6 mm, 10 mm, and 13 mm, with corresponding outside diameters of 12 mm, 15 mm, and 19 mm. The listed hose lengths range from 7.5 m to 15 m, allowing users to select the appropriate working radius without unnecessarily increasing reel size.
| Configuration | Hose I.D. | Hose O.D. | Hose Length | Max. Pressure | Max. Temperature |
|---|---|---|---|---|---|
| K435 LP | 6 mm | 12 mm | 10.5 m | 21 bar | 65°C |
| K635 LP | 10 mm | 15 mm | 10.5 m | 21 bar | 65°C |
| K650 LP | 10 mm | 15 mm | 15 m | 21 bar | 65°C |
| K825 LP | 13 mm | 19 mm | 7.5 m | 21 bar | 65°C |
| K835 LP | 13 mm | 19 mm | 10.5 m | 21 bar | 65°C |
| K850 LP | 13 mm | 19 mm | 15 m | 21 bar | 65°C |
For customers who already have their own hose, the corresponding reel-only versions are also available.
| Reel-Only Model | Weight | Max. Pressure | Corresponding Size |
|---|---|---|---|
| K405 LP | 7 kg | 21 bar | Size 1 |
| K605 LP | 12 kg | 21 bar | Size 2 |
| K805 LP | 12 kg | 21 bar | Size 2 |
| K806 LP | 12.5 kg | 21 bar | Size 3 |
The final configuration should be selected according to hose diameter, required hose length, connection size, working pressure, and installation space.
How the Spring Rewind System Works
The K-Series uses a spring-powered rewind mechanism to manage the hose during repeated deployment and retraction.
When the operator pulls the hose outward, the reel rotates and the internal spring is tensioned. The hose can then be positioned at the required working distance. When the hose is released according to the reel's operating mechanism, stored spring energy rotates the reel in the reverse direction and retracts the hose onto the drum.
Controlled Hose Storage
The hose remains wound around the reel instead of being left loose on the workshop floor. This helps maintain a more organized work area and reduces the likelihood of the hose being stepped on, driven over, or caught by moving equipment.
Faster Hose Deployment
The operator only needs to pull the hose to the required working position. There is no need to manually unwind a loose coil before starting work.
Automatic Retraction
After the operation, the spring mechanism provides the force required to rewind the hose. This is particularly useful in maintenance stations where hoses are deployed and retracted many times during a working shift.
Reduced Hose Handling
Repeated manual coiling can create sharp bends and inconsistent storage patterns. A properly configured reel provides a defined winding path around the reel, helping maintain controlled hose management.
Carbon Steel Reel Construction
The K-Series is constructed entirely from carbon steel, providing a straightforward mechanical structure suitable for general industrial hose management.
The reel discs are produced through mold stamping. Compared with manually fabricated disc structures, stamping allows the two reel sides to maintain consistent geometry across production batches. The stamped discs form the primary side structure of the reel and support the rotating hose storage assembly.
Main Structural Elements
| Component | Material / Construction | Primary Function |
|---|---|---|
| Reel Disc | Mold-stamped carbon steel | Supports and contains the hose winding area |
| Reel Frame | Carbon steel | Supports the rotating reel assembly |
| Spring Mechanism | Spring-driven mechanical system | Provides automatic hose retraction |
| Hose Connection | NPT threaded connection | Connects the hose to the supply system |
| Surface Finish | Powder coating | Protects exposed carbon steel surfaces |
| Hose Assembly* | Selected hose specification | Transfers compressed air or water |
*Applicable to hose-equipped models.
Powder-Coated Surface Treatment
The reel discs and exposed carbon steel components use a powder-coated finish.
Powder coating creates a continuous protective coating over the prepared steel surface. It provides resistance against routine abrasion, handling, and environmental exposure encountered in typical workshop applications.
The coating also provides a uniform surface finish that is suitable for industrial equipment where the reel is frequently handled or installed in visible work areas.
Hose Options for Different Flow Requirements
The K-Series provides three main hose diameter configurations:
6 mm I.D. Hose Configuration
The 6 mm internal diameter configuration is represented by the K435 LP model. With a 12 mm outside diameter and 10.5 m hose length, it is suited to applications where a relatively compact hose is sufficient for the required air or water delivery.
10 mm I.D. Hose Configuration
The 10 mm internal diameter configuration is available in both 10.5 m and 15 m versions. The 15 m configuration provides a longer operating radius while maintaining the same 10 mm internal diameter.
| Model | Hose I.D. | Hose O.D. | Length | Hose Outlet | Reel Inlet |
|---|---|---|---|---|---|
| K635 LP | 10 mm | 15 mm | 10.5 m | 1/4" NPT female | 3/8" NPT male |
| K650 LP | 10 mm | 15 mm | 15 m | 1/4" NPT female | 3/8" NPT male |
13 mm I.D. Hose Configuration
The 13 mm internal diameter configuration uses a 19 mm outside diameter hose and is available in three hose lengths. The larger internal diameter is appropriate when the application requires a greater air or water flow capacity.
| Model | Hose I.D. | Hose O.D. | Length | Hose Outlet | Reel Inlet |
|---|---|---|---|---|---|
| K825 LP | 13 mm | 19 mm | 7.5 m | 3/8" NPT female | 3/8" NPT male |
| K835 LP | 13 mm | 19 mm | 10.5 m | 3/8" NPT female | 3/8" NPT male |
| K850 LP | 13 mm | 19 mm | 15 m | 3/8" NPT female | 3/8" NPT male |
Connection Configuration
The hose-equipped K-Series models use NPT threaded connections. The reel-side inlet is specified as a 3/8" NPT male thread across the listed hose-equipped configurations.
| Hose I.D. | Hose O.D. | Outlet Connection | Reel Inlet |
|---|---|---|---|
| 6 mm | 12 mm | 1/4" NPT female | 3/8" NPT male |
| 10 mm | 15 mm | 1/4" NPT female | 3/8" NPT male |
| 13 mm | 19 mm | 3/8" NPT female | 3/8" NPT male |
This configuration allows the reel to connect to a fixed compressed-air or water supply through the reel inlet while providing a practical threaded outlet for the working hose. Before installation, verify thread standard, fitting orientation, and working pressure.
Product Dimensions
Three reel size configurations are provided. All dimensional values below are in millimeters.
| Dimension (mm) | Size 1 | Size 2 | Size 3 |
|---|---|---|---|
| A | 324 | 438 | 438 |
| B | 305 | 419 | 419 |
| C | 76.2 | 76.2 | 76.2 |
| D | 76.2 | 76.2 | 76.2 |
| E | 125 | 138 | 163 |
| F | 25.4 | 25.4 | 25.4 |
For installation planning, buyers should reserve sufficient clearance for reel rotation, hose deployment, hose retraction, connection routing, mounting access, and routine inspection.
Max Pressure & Temperature
Max Pressure: 21 bar
Max Working Temp: 65°C
These values are key selection parameters. The complete assembly should not be operated beyond the pressure and temperature limits of its lowest-rated component.
Designed For Industrial Environments
- Workshop Pneumatic Stations: Supplies air impact wrenches, pneumatic drills, blow guns, etc.
- Equipment Maintenance: Quick temporary access around industrial machinery.
- Vehicle Service Areas: Reliable air supply in service bays.
- General Cleaning Stations: Low-pressure water deployment across working radiuses.
- Production Workstations: Integrated hose routing directly inside manufacturing cells.
Why Choose the Economical K-Series
1. Cost-Controlled Steel
Carbon steel structure provides a practical solution without expensive specialized material overhead.
2. Compact Configuration
Engineered for installations where mounting space is strictly limited.
3. Automatic Rewind
Internal spring mechanism removes manual coiling labor after each operation.
4. Multiple Hose Diameters
6 mm, 10 mm, and 13 mm options cover diverse air and water delivery demands.
5. Multiple Hose Lengths
7.5 m, 10.5 m, and 15 m configurations match required working radiuses.
6. Hose or Bare Supply
Complete assembly or reel-only variants accommodate existing inventories.
Purchasing Options
Hose-Equipped Version
Ready-to-install complete assembly with predefined hose and thread.
Models: K435 LP, K635 LP, K650 LP, K825 LP, K835 LP, K850 LP
Reel-Only Version
For buyers with existing hose inventory or custom hose needs.
Models: K405 LP, K605 LP, K805 LP, K806 LP
Model Selection Guide
| Requirement | Recommended Selection Consideration |
|---|---|
| Small air tools | 6 mm I.D. configuration |
| General pneumatic tools | 10 mm I.D. configuration |
| Higher flow requirement | 13 mm I.D. configuration |
| Short working radius | 7.5 m hose |
| Standard workstation coverage | 10.5 m hose |
| Larger working area | 15 m hose |
| Existing compatible hose | Reel-only model |
| Ready-to-install requirement | Hose-equipped model |
| Standard system pressure up to 21 bar | K-Series LP configuration |
System Routing Flow
The supply connects via 3/8" NPT male inlet. The mounting point must be rigid enough to withstand deployment forces without side loading.
Precision 8-Step Production
- Carbon Steel Preparation
- Mold Stamping Discs
- Component Forming
- Surface Preparation
- Powder Coating Finish
- Spring Rewind Assembly
- Hose Fitting Integration
- Final Inspection Check
Quality Control Points
| Inspection Item | Control Focus |
|---|---|
| Reel Disc | Stamping geometry and dimensional consistency |
| Reel Structure | Assembly alignment and mechanical stability |
| Surface Finish | Powder-coating coverage and surface condition |
| Spring Mechanism | Rewind action and operating consistency |
| Hose | I.D., O.D., length, and physical condition |
| NPT Connection | Thread specification and assembly |
| Overall Dimension | Compliance with specified size |
| Pressure Rating | Verification against the selected configuration |
Economical Does Not Mean Simplified Function
The K-Series is economical because its construction is focused on essential functions required for general-purpose hose management without unnecessary complexity.
OEM & Bulk Supply Options
For distributors, equipment manufacturers, and industrial procurement projects, the K-Series can be evaluated according to required configurations.
FAQ
Technical Specification Summary
| Item | K-Series Economical Spring Reel |
| Product Type | Spring-rewind hose reel |
| Main Material | Carbon steel |
| Reel Disc Manufacturing | Mold stamping |
| Surface Finish | Powder coating |
| Application Media | Compressed air / low-pressure water |
| Maximum Pressure | 21 bar |
| Maximum Temperature | 65°C |
| Hose I.D. / O.D. | 6 / 10 / 13 mm (I.D.) | 12 / 15 / 19 mm (O.D.) |
| Hose Length | 7.5 / 10.5 / 15 m |
| Reel Inlet / Hose Outlet | 3/8" NPT male (Inlet) | 1/4" or 3/8" NPT female (Outlet) |
| Supply Options | Hose-equipped / reel-only |
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