Belt Drive Automatic Gear Hub 135mm Waterproof 2 Speed Internal Gear Hub

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.

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.