Product Description
Automatic 2-Speed Internal Gear Hub For Urban E-Bikes And Shared Fleets
Product Overview
The A02 Automatic 2-Speed Internal Gear Hub is a maintenance-free mechanical shifting series for urban e-bikes, shared city bicycles and light mobility platforms. It is designed to make daily riding simpler by shifting automatically between two gear ratios inside the rear hub, without requiring a handlebar shifter or gear cable for normal riding.
The A02 series uses CentriGear mechanical shifting technology. Based on centrifugal-force triggering and planetary gear operation, the hub changes between a 1.00 starting ratio and a 1.33 cruising ratio as riding conditions change. This gives riders an easier start at low speed and a more efficient cruising feel once the bicycle is moving.
For OEM brands and fleet operators, the main value is simplicity. The sealed internal gear structure keeps the shifting mechanism inside the hub body, supports a cleaner rear-wheel layout and reduces exposed shifting parts. The A02 series includes chain drive, belt drive and drum brake lock matching directions, allowing product teams to choose the right version according to frame spacing, brake structure and drivetrain layout.
Key Features
- Mechanical Automatic 2-Speed Shifting: No manual shifter required for normal riding.
- CentriGear Shifting Technology: Uses centrifugal-force triggering and planetary gear operation.
- 1.00 / 1.33 Gear Ratios: Low gear for starting and high gear for cruising.
- 133% Total Gear Range: A simple ratio range for urban e-bike and city riding.
- Maintenance-Free Sealed Design: Keeps the shifting mechanism protected inside the hub.
- Cleaner Rear-Wheel Layout: Reduces exposed shifting parts compared with external shifting systems.
- Shared/Fleet Application Focus: Suitable for public-use city bicycles when the selected model matches the frame and brake structure.
- Multiple A02 Versions: Chain drive disc brake, belt drive disc brake and drum brake lock matching options.
- IPX6 And RoHS / REACH: Provides a clear baseline for product planning and compliance review.
Technical Advantages / How It Works
A02 uses a mechanical automatic shifting structure. The internal mechanism is based on CentriGear shifting logic, where centrifugal-force triggering works with a planetary gear system to change between the low and high gear ratios. The low gear supports easier starting, while the high gear supports more efficient cruising in city riding.
The product page should not publish shift trigger speed, threshold values or threshold adjustment procedures. These details should be handled through project communication when required.
Technical Parameters
| Parameter |
LG-N7000-2D |
| 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 |
6-Bolt Disc Brake |
| Spoke Size |
#13 / #14 |
| O.L.D. |
130 mm |
| Axle Length |
180 mm |
| Chainline G1 |
49.4 mm |
| Chainline G2 |
44.5 mm |
| Offset |
2.75 mm |
| Axle Length From Hub, Left |
25 mm |
| Axle Length From Hub, Right |
25 mm |
| Thread Size |
JIS BC3/8-26 |
| Spoke Hole Diameter |
3.2 mm |
| Spoke Hole Number |
36H |
| Brake Mounting Width |
15.3 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 |
Applications
A02 is suitable for urban e-bikes, city commuter bicycles, shared e-bike fleets, rental bicycles, campus mobility vehicles and light electric mobility products that need simple operation, a clean rear-wheel structure and maintenance-free internal shifting.
OEM Matching Notes
Before sampling, OEM customers should confirm rear frame drawing, O.L.D., brake type, chainline or belt line, spoke specification, axle matching, wheel build, target vehicle type and expected operating environment. Installation and matching details should be confirmed during project communication.
FAQ
Q: What is this model best suited for?
A: Urban e-bikes and city bicycle projects that need a compact 130 mm rear dropout disc brake hub.
Q: How is this model different from the other A02 versions?
A: 130 mm O.L.D., 6-bolt disc brake, chain-drive layout with G1 49.4 mm and G2 44.5 mm chainline.
Q: Does it require manual shifting?
A: No. The A02 series uses a mechanical automatic 2-speed shifting structure and does not require a manual shift lever for normal riding.
Q: What should be confirmed before sampling?
A: Confirm rear frame O.L.D., brake interface, chainline or belt line, spoke specification, axle matching, wheel build and target riding scenario.
Q: Can Lofandi support OEM project matching?
A: Yes. OEM support can include product selection, drawing review, drivetrain matching, sample preparation and project validation according to the vehicle requirements.
Q: What ordering information should buyers provide?
A: Please provide expected order volume, sample quantity, target market, vehicle type, configuration requirements and validation schedule. Price, MOQ and lead time should be confirmed after project details are clear.
Q: What quality or compliance information is available?
A: The source parameter table lists IPX6 and RoHS / REACH. Additional compliance documents or test reports should be confirmed according to project and market requirements.
Q: Is it suitable for shared or fleet bicycles?
A: It can be considered for shared or fleet-style city bicycles when the frame, brake structure and maintenance requirements match the selected model. Final use should be confirmed through project validation.
