LG-N7003-2G Automatic 2-Speed Drum Brake Lock Hub For Shared E-Bikes
| Model: | LG-N7003-2G | Product Type: | Automatic 2-Speed Chain Drive Hub |
| Application: | City E-bikes And Low-maintenance Bicycle Platforms Requiring Integrated Drum Brake Lock Matching. | Total Gear Ratio: | 133% |
| Shifting Operation: | Mechanical Automatic Shifting | Gear Ratios: | 1.00 / 1.33 |
| Drive Compatibility: | Chain Drive System | Brake Type: | Drum Brake Lock |
| O.L.D.: | 135 Mm | Chainline: | G1: 56 Mm / G2: 50.8 Mm |
| Weight: | 1.3 Kg | Waterproof Rating: | IPX6 |
| High Light: | LG-N7003-2G automatic drum brake hub,2-speed e-bike lock hub,shared e-bike automatic gear hub |
||
LG-N7003-2G is the drum brake lock matching version of the A02 automatic 2-speed internal gear hub. It is designed for shared city e-bikes, public-use bicycles and fleet mobility platforms that need simple mechanical automatic shifting, maintenance-free sealed internal gearing and a rear hub structure matched for drum brake lock layouts.
For shared and fleet use, rider operation should be simple. LG-N7003-2G shifts automatically between 1.00 and 1.33 ratios without requiring a manual shifter for normal riding. This helps reduce rider-side gear selection dependency in short-distance, public-use city riding.
Compared with the disc brake A02 versions, LG-N7003-2G uses 135 mm O.L.D., chain drive, 56 mm G1 chainline, 50.8 mm G2 chainline and 30.8 mm brake mounting width. These values should be reviewed carefully with the frame, brake and wheel structure before sampling.
- Shared/Fleet City Mobility Focus
- Drum Brake Lock Matching For Public-Use Bicycle Platforms
- Mechanical Automatic 2-Speed Shifting
- No Manual Shifter Required For Normal Riding
- 135 mm O.L.D. Chain Drive Rear Hub Structure
- 1.00 / 1.33 Gear Ratios For Start And Cruise
- 36H Spoke Hole Number
- Maintenance-Free Sealed Internal Gear Design
- IPX6 Waterproof Rating
- RoHS / REACH Certification
LG-N7003-2G uses the A02 CentriGear mechanical shifting structure. Centrifugal-force triggering and planetary gear operation allow the hub to shift between two internal ratios inside the rear hub body. The low ratio supports easier starting, while the high ratio supports city cruising.
For shared mobility pages, keep the technical language focused on mechanical automatic shifting and drum brake lock matching. Do not describe the product as a smart lock, anti-theft lock, communication module or anti-lock system unless those functions are separately confirmed.
This model is best used for city e-bikes and low-maintenance bicycle platforms requiring integrated drum brake lock matching. It is especially relevant for OEM projects where the buyer wants a lower-maintenance alternative to exposed external shifting, but still needs the hub to match a specific brake interface, dropout width and drivetrain line.
| Parameter | LG-N7003-2G |
|---|---|
| Product Type | Automatic 2-Speed Chain Drive Version |
| Product Category | Automatic Gear Hub |
| Speed Level | 2 Speed |
| Total Gear Ratio | 133% |
| Gear Ratio 1 | 1.00 |
| Gear Ratio 2 | 1.33 |
| Brake Type | Drum Brake Lock |
| Spoke Size | #13 / #14 |
| O.L.D. | 135 mm |
| Axle Length | 180 mm |
| Chainline G1 | 56 mm |
| Chainline G2 | 50.8 mm |
| Offset | 3.85 mm |
| Axle Length From Hub, Left | 23 mm |
| Axle Length From Hub, Right | 23 mm |
| Thread Size | JIS BC3/8-26 |
| Spoke Hole Diameter | 3.2 mm |
| Spoke Hole Number | 36H |
| Brake Mounting Width | 30.8 mm |
| Color | Silver |
| Matching Belt Cog | Not Provided |
| Average Weight | 1.3 kg |
| Operating / Storage Temperature | -30–80℃ / -40–85℃ |
| Waterproof Rating | IPX6 |
| Certifications | ROHS / REACH |
Before sampling, fleet customers and OEM teams should confirm 135 mm O.L.D., drum brake lock layout, 30.8 mm brake mounting width, chainline G1 / G2, spoke specification, wheel build, axle matching, frame clearance and target operating environment.
