Belt Drive Automatic Gear Hub 135mm Waterproof 2 Speed Internal Gear Hub
| Model: | LG-N7001-2D | Product Type: | Automatic 2-Speed Belt Drive Hub |
| Speed Level: | 2 Speed | Total Gear Ratio: | 133% |
| Shifting Operation: | Mechanical Automatic Shifting | Gear Ratios: | 1.00 / 1.33 |
| Drive Compatibility: | Belt Drive System | Brake Type: | 6-Bolt Disc Brake |
| O.L.D.: | 135 Mm | Belt Line: | 45.5 Mm |
| Weight: | 1.3 Kg | Waterproof Rating: | IPX6 |
| High Light: | Belt Drive Automatic Gear Hub,Automatic Gear Hub 135mm,waterproof 2 speed internal gear hub |
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LG-N7001-2D is the belt-drive version of the A02 automatic 2-speed internal gear hub. It is built for clean and quiet urban e-bike drivetrains that use belt drive while still requiring 6-bolt disc brake compatibility and automatic shifting for daily commuting.
The model features 135 mm O.L.D., 45.5 mm G1 line and CDC9 spline Gates belt cog / thread fastener matching. For OEM buyers, this makes it more suitable for premium low-maintenance city e-bikes where belt-line accuracy, frame clearance and rear brake matching must be confirmed before sampling.
- Automatic 2-speed shifting reduces rider operation during daily city riding.
- 133% total gear range supports easier starting and efficient cruising.
- Sealed internal gear structure helps protect transmission parts from dust, mud and rainwater.
- Belt Drive System configuration for the target drivetrain layout.
- 6-Bolt Disc Brake matching for the selected rear brake structure.
- 135 mm O.L.D. rear hub structure for frame matching.
- IPX6 waterproof rating and RoHS / REACH certification support international product planning.
The A02 automatic internal gear hub uses a mechanical self-shifting structure to change between two gear ratios according to riding conditions. The first ratio provides stable starting support, while the second ratio improves pedaling efficiency at higher city riding speeds.
Because the gear mechanism is built inside the hub shell, the system is less exposed to external contamination than traditional external shifting systems. This enclosed structure helps reduce chain alignment issues, dirt accumulation and frequent adjustment work.
For e-bike brands, the A02 series offers a practical solution for clean urban vehicle design, with different models available for chain drive, belt drive, disc brake and drum brake lock requirements.
| Parameter | LG-N7001-2D |
|---|---|
| Product Type | Automatic 2-Speed Belt 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. | 135 mm |
| Axle Length | 180 mm |
| Chainline G1 | 45.5 mm |
| Chainline G2 | Not Provided |
| Offset | 2.85 mm |
| Axle Length From Hub, Left | 22.5 mm |
| Axle Length From Hub, Right | 22.5 mm |
| Thread Size | JIS BC3/8-26 |
| Spoke Hole Diameter | 3.2 mm |
| Spoke Hole Number | 36H |
| Brake Mounting Width | 17.8 mm |
| Color | Silver |
| Matching Belt Cog | CDC9 Spline Gates Belt Cog / Thread Fastener |
| Average Weight | 1.3 kg |
| Operating / Storage Temperature | -30–80℃ / -40–85℃ |
| Waterproof Rating | IPX6 |
| Certifications | ROHS / REACH |
The Automatic 2-Speed Internal Gear Hub is suitable for urban e-bikes, city commuter bicycles, light electric mobility vehicles and daily-use bicycle platforms. It is especially useful for riders who want a simple riding experience without manual shifting.
For city commuting, the 2-speed automatic structure helps make starting and cruising easier. For OEM bicycle brands, the sealed hub design reduces exposed drivetrain components and supports cleaner vehicle styling. With chain-drive, belt-drive, disc brake and drum brake lock options, the A02 series can be matched to different frame structures and urban mobility projects.
Before sampling, OEM customers should provide frame drawings, rear dropout spacing, brake type, wheel size, spoke requirements, chainline or belt-line target, axle compatibility and expected use scenario. Lofandi can support model selection, drawing confirmation, sample preparation and installation matching according to the final vehicle platform.
A: Clean, quiet urban e-bike projects using belt drive and 6-bolt disc brake rear hub design.
A: Belt-drive version with CDC9 spline Gates belt cog / thread fastener matching, 135 mm O.L.D. and 17.8 mm disc brake mounting width.
A: No. The A02 series uses a mechanical automatic 2-speed shifting structure and does not require a manual shift lever for normal riding.
A: Confirm rear frame O.L.D., brake interface, chainline or belt line, spoke specification, axle matching, wheel build and target riding scenario.
A: Yes. OEM support can include product selection, drawing review, drivetrain matching, sample preparation and project validation according to the vehicle requirements.
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.
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.
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.
