Smart Servo Bike Drum Brake - 4 Magnet Speed Sensing For Shared E-Bikes
Product Overview
The Smart Servo Drum Brake Lock is designed for shared e-bikes, rental bicycles and fleet mobility vehicles that need rear wheel braking and electronic lock control in one compact assembly. SS2715 combines a drum brake structure with a smart locking module, allowing the vehicle platform to manage rear wheel security through the controller, IoT module or battery-side system.
Unlike a separate external lock, SS2715 is installed around the rear hub or rear motor area. This helps reduce exposed locking parts and keeps the anti-theft function integrated with the vehicle's rear wheel structure. For public-use vehicles, this compact brake-lock layout can support cleaner appearance, better tamper resistance and easier fleet operation.
The product supports UART, RS485 and CAN communication, making it suitable for connected vehicle platforms that require remote lock and unlock commands, vehicle status feedback and speed-aware control logic. With standard 4-magnet speed sensing and IPX7 lock-core waterproof protection, SS2715 is suitable for outdoor shared mobility applications where frequent use, rain exposure and service reliability are important.
Key Features
- Integrated rear wheel braking and electronic smart lock control
- Mounted at the rear wheel center hub area, generally on the left side of the rear hub or rear motor
- Supports UART / RS485 / CAN communication for vehicle-side integration
- Electronic protection speed can be defined according to customer requirements
- Standard 4 magnets per ring support speed sensing and safer locking logic
- Torque resistance test: ≥160 N.m
- IPX7 lock-core waterproof protection and 72 Hours, Neutral salt spray test requirement
- Suitable for shared bikes, e-bikes, rental vehicles and fleet mobility platforms
Technical Advantages
SS2715 works by combining a rear drum brake structure with an electronically controlled locking module. When the vehicle-side system sends a lock or unlock command, the lock module performs the corresponding action while the brake structure remains integrated with the rear wheel assembly.
The 4-magnet speed sensing configuration helps the vehicle system detect wheel movement status before executing lock control. This is important for shared e-bike and rental vehicle projects, where safer locking logic and vehicle status feedback are required during frequent public use.
For OEM projects, the main value of SS2715 is compact rear wheel integration. Instead of adding a separate exposed lock, the brake and lock functions are combined around the rear hub area. This helps simplify vehicle design, improve anti-theft integration and support remote fleet operation.
Technical Specifications
| Product Name | Smart Following Drum Brake Lock |
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| Model | SS2715 |
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| Product Category | Bike Drum Brake |
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| Product Type | Servo Brake Lock / Following Drum Brake Lock |
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| Mounting Position | Left Side Of Rear Hub Or Rear Motor |
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| Voltage | 5V-60V DC |
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| Communication | UART / RS485 / CAN |
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| Power Source | Main Controller / IoT / Battery |
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| Electronic Protection Speed | Defined According To Customer Requirements |
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| Speed Sensing Solution | Standard 4 Magnets / Ring, Customizable By Requirement |
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| Torque Resistance Test | ≥160N*m |
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| Axle Hole Diameter | 10 mm / 12 mm |
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| Brake Diameter | 100 mm |
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| Compatible Brakes / Braking Performance | Servo Brake, Complies With ISO 4210-2015 Standard |
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| Operating Temperature | -20℃ To 65℃ |
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| Waterproof Rating | IPX7 Lock Core |
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| High Temperature Storage | 80℃ ± 2℃ For 48 Hours |
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| Low Temperature Storage | -35℃ ± 2℃ For 48 Hours |
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| High Temperature And Humidity | 65℃, 95%RH, 48 Hours |
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| Salt Spray Test | 72 Hours, Neutral |
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| Reference Weight | 1 kg |
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| Brake Disc Info | 6-Bolt Interface, φ44 mm |
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| Certifications | Not Provided |
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Applications
SS2715 is suitable for shared bicycles, e-bikes and rental fleets requiring rear hub brake-lock integration and electronic speed sensing. It is especially useful when operators need remote lock control, integrated braking, vehicle status feedback and reduced exposed lock components on public-use vehicles.
OEM & Service Support
Before sampling, OEM customers should provide rear hub structure, frame drawings, wheel size, brake layout, axle hole requirement, voltage platform, communication protocol, controller or IoT interface, speed sensing requirement, waterproof requirement, vehicle weight, load condition and target operating environment. Lofandi can support technical matching, drawing confirmation, sample preparation and project validation.
Frequently Asked Questions
Where is this servo brake lock installed?
It is installed at the rear wheel center hub area, generally on the left side of the rear hub or rear motor. It locks the rear wheel and integrates rear braking function.
Is this a normal brake or a smart lock?
It is both a rear braking assembly and an electronic smart lock module. It is designed for connected shared mobility vehicles rather than as a simple mechanical brake only.
What is the main difference between SS2715 and ATL3733?
Updated public model name from SS2727 to SS2715, 10 mm / 12 mm axle hole options, no mechanical-layer safety lock speed, -20°C to 65°C working temperature.
What should be confirmed before sampling?
Confirm rear hub layout, axle hole size, brake diameter, wheel size, voltage, communication protocol, speed sensing solution, waterproof requirement, vehicle load and operating conditions.
Does it support remote operation?
Yes. The product is designed to receive lock and unlock commands from the vehicle controller, IoT module or battery-side system, subject to project communication matching.
Can the speed protection logic be customized?
Electronic protection speed can be defined according to customer requirements. Mechanical safety-speed behavior, when applicable, should be validated according to wheel diameter and vehicle operating conditions.
What testing information is available?
The extracted source lists operating temperature, IPX7 lock-core protection, high/low temperature storage, high temperature and humidity testing, and 72-hour neutral salt spray testing. Formal reports should be confirmed by project requirement.
What ordering information should buyers provide?
Please provide model, target vehicle type, expected quantity, voltage, communication interface, mounting drawings, sample schedule and validation requirements. Price, MOQ and lead time should be confirmed after the project scope is clear.
