Spring Balancer for EV Charging Stations
The BESSUN Spring Balancer uses a vertical spring-assisted support structure to balance the charging cable while allowing the support to follow the cable direction during use.
Available in charger-mounted and free-standing configurations, they provide flexible cable management solutions for different charging station designs and installation requirements.
Spring Balancer in Action
See how the BESSUN Spring Balancer supports EV charging cables and assists cable movement during charging, helping reduce handling effort and cable dragging.
Note: This video demonstrates the charger-mounted BSM-SB configuration. Free-standing configurations are also available for different installation requirements.
Why Use a Spring Balancer?
Cable Retractors provide a compact and practical solution for EV charging cable management, while Swing Arms offer a different cable handling experience through their articulated arm structure.
However, not every DC charging station has sufficient space or structural capacity to accommodate a Swing Arm.
BESSUN Spring Balancers are designed to bridge this gap, combining spring-assisted cable support with rotational movement in a relatively compact structure.
This provides an alternative for charging stations where improved cable handling is required but installing a conventional Swing Arm may not be practical.
Flexible Installation
Charger-mounted and free-standing configurations accommodate different charging station designs and retrofit requirements.
Reduce Cable Dragging
Helps support charging cable weight and reduce contact with the ground during use.
Reduce Bending & Twisting
Provides an alternative where the charger structure or available space is unsuitable for a conventional Swivel Arm Balancer.
Improve Cable Handling
Spring-assisted cable support and rotational movement help users maneuver charging cables with less effort.
Choose Your Spring Balancer
BESSUN offers different Spring Balancer configurations to accommodate various charging cable specifications and installation requirements.
Choose between charger-mounted and free-standing configurations based on your charging station structure, available installation space, and cable management needs.
BSM-SB
Charger-Mounted
BSM-SB-2000-S
Free-Standing
| Model | Overall Length | Applicable Cable Diameter | Charging cable length | Charging cable weight |
|---|---|---|---|---|
| BSM-SB-880-D22-25 | 880 mm | Ø22–25 mm | 5 ~ 7 m | 8–10 kg |
| BSM-SB-1100-D22-25 | 1100 mm | |||
| BSM-SB-880-D26-29 | 880 mm | Ø26–29 mm | 10–12 kg | |
| BSM-SB-1100-D26-29 | 1100 mm | |||
| BSM-SB-880-D30-33 | 880 mm | Ø30–33 mm | 13–15 kg | |
| BSM-SB-1100-D30-33 | 1100 mm | |||
| BSM-SB-880-D34-37 | 880 mm | Ø34–37 mm | 15–17 kg | |
| BSM-SB-1100-D34-37 | 1100 mm | |||
| BSM-SB-880-D38-43 | 880 mm | Ø38–43 mm | 18–25 kg | |
| BSM-SB-1100-D38-43 | 1100 mm |
Notes:
- Free-standing configuration: The BSM-SB-2000-S free-standing version is not listed separately in the table, as it uses the same spring balancer configuration with an additional supporting tube.
- Extended length: Extended lengths of up to 10 m may be possible depending on the cable specifications and application conditions, subject to technical evaluation.
Engineered for Demanding Charging Environments
BESSUN Spring Balancers combine robust construction, spring-assisted cable support, and rotational movement to meet the demands of DC charging applications.
Robust Construction
Durable aluminum alloy construction for demanding charging environments.
Smooth Operation
Provides smooth, controlled movement to help users handle the charging cable more easily during connection and return.
Corrosion Resistance
Corrosion-resistant materials and surface treatments for outdoor applications.
Long Service Life
Designed for repeated operation, with endurance testing to validate mechanical durability.
Applications
BESSUN Spring Balancers are designed for charging applications where heavy cables require additional support and flexible movement.
Different spring configurations and installation options allow the BSM-SB Series to accommodate a range of DC charging environments.
Public DC Fast Charging
Supports heavy charging cables at public fast charging stations during frequent use.
Fleet & Depot Charging
Suitable for locations with frequent charging operations and repeated cable handling.
Bus & Truck Charging
Provides cable support for heavier charging applications.
Highway Charging Stations
Helps manage cables at high-power locations with frequent public use.
Commercial & Industrial
Suitable for robust cable-management applications.
Retrofit Applications
Can be evaluated for existing charging stations where a suitable mounting solution is available.
Explore our Retrofit Cable Management Solutions for DC Fast Chargers.
Testing & Validation
Initial Tension Force
The initial tension force is measured and verified to ensure that it meets the specified value for each Spring Balancer configuration.
Endurance Testing
Repeated operating cycles to evaluate mechanical durability.
Temperature Testing
Evaluation under defined high- and low-temperature conditions.
Corrosion Testing
Evaluation of corrosion resistance for metal parts and surface treatments.
Need Detailed Technical Data or Drawings?
To help us recommend the right Spring Balancer configuration, please provide:
- Cable length
- Cable diameter
- Cable weight
- Installation height / mounting position
Based on this information, we can recommend a suitable Spring Balancer configuration for your application.
QUICK ANSWERS
FAQ
Is there a right-hand and left-hand version?
No. A separate right-hand or left-hand version is not required. The installation direction can be adjusted by loosening the fixing screws, rotating the support tube to the required position, and then tightening the screws again.
What is the difference between basic type and extended type?
The 880 mm and 1100 mm versions refer to Overall Length.
What is your MOQ?
No MOQ. The sample lead time is 10 ~ 12 days.
What information should I provide when sending an inquiry?
To ensure we provide the best possible solution, it would be great to receive the following information:
- Cable length
- Cable diameter
- Cable weight
- Installation height / mounting position
Do all versions use the same spring?
No, the springs are not identical across all versions. Each model is equipped with a specific spring suitable to its load capacity and operational requirements.
How should I select a model if my specific weight or length exceeds the standard specifications in the table? (e.g., Diameter: 32mm, Length: 7m, Weight: 17kg)
If your requirements fall between two models, we strongly recommend selecting the next higher capacity model.
Example: For a diameter of 32mm, length of 7m, and weight of 17kg, you should choose the BSM-SB-1100-D34-37 rather than the BSM-SB-1100-D30-33.
Selecting a model with a slightly higher specification ensures safer operation and longer service life for the spring mechanism.
Before placing an order, we recommend confirming the final model selection with BESSUN based on your cable specifications and installation conditions.
Can I use my own cable clamps with this cable management system?
Unfortunately, no. Due to the unique design of this system, third-party cable clamps are unlikely to be compatible.
Do DC charger panels require reinforcement for Spring Balancer installation?
The mounting area should have sufficient structural strength to support the Spring Balancer during operation. As a general reference, approximately 5 mm sheet metal can be considered, but the actual requirement depends on the charger structure and mounting conditions.
If the mounting panel is relatively thin or does not provide sufficient rigidity, additional reinforcement or a mounting plate is recommended.
Related Resources
Check out the Design Recommendations for Accessible Electric Vehicle Charging Stations by the U.S. Access Board for expert guidance on creating inclusive and accessible charging solutions.