MachineU > China Products > Sports & Entertainment > Cycling > Electric Bicycle Part > Electric Bicycle Motor
A03 Automatic 3-Speed Internal Gear Hub For City E-Bikes
A03 Automatic 3-Speed Internal Gear Hub For City E-Bikes
Specifications
Model Number :
A03
Technology :
CentriGear Mechanical Automatic Shifting
Brake Type :
6-Bolt Disc Brake
Application :
City E-Bikes / Commuter OEM Projects
Certification :
RoHS,REACH
Product Category :
Automatic Gear Hub
Payment Terms :
T/T,PayPal,L/C,D/A,D/P,Western Union,MoneyGram
Drive Versions :
LG-N7118-3D Chain Drive / LG-N7122-3D Belt Drive
Shifting Principle :
Centrifugal Force + Planetary Gear Operation
Delivery Time :
<20days
Gear Range :
166% Total Gear Ratio
Brand Name :
ELEVANDI
Product Series :
A03 Automatic 3-Speed Internal Gear Hub
Place of Origin :
GUANGZHOU,CHINA
MOQ :
TBD
Price :
Negotiable
Target Buyer :
City E-Bike Brands / Commuter Bicycle OEMs
Supply Ability :
Ten thousand sets per month
Packaging Details :
1pcs/carton
Description
Product Description
A03 Automatic 3-Speed Internal Gear Hub For City E-Bikes
Product Overview

A03 is a mechanical automatic 3-speed internal gear hub for city e-bikes, commuter bicycles and OEM projects that need automatic shifting without electronic control. It uses CentriGear shifting technology, combining centrifugal-force triggering with planetary gear operation to support start, cruising and higher-speed riding conditions.

The A03 series includes chain drive and belt drive model directions. LG-N7118-3D is the chain drive version for practical city e-bike and commuter OEM projects. LG-N7122-3D is the belt drive version for premium city e-bikes and low-maintenance platforms.

With 166% total gear range, 6-bolt disc brake compatibility, 135 mm O.L.D., 184 mm axle length, IPX6 protection and 1.64 kg average weight, A03 provides a clear automatic 3-speed internal gear hub direction for urban vehicle development.

Key Features

  • Mechanical Automatic 3-Speed Hub: No electronic controller required for shifting.

  • CentriGear Shifting Technology: Uses centrifugal force and planetary gear operation.

  • 166% Total Gear Range: Covers starting, cruising and higher-speed city riding.

  • Chain And Belt Drive Versions: Supports different drivetrain planning directions.

  • 6-Bolt Disc Brake Matching: Source-backed brake type for this replacement page.

  • 135 mm O.L.D.: Suitable for city e-bike and commuter OEM review.

  • Sealed Internal Gear Structure: Helps reduce exposed shifting parts.

A03 Automatic 3-Speed Internal Gear Hub For City E-Bikes

Technical Advantages / How It Works

A03 changes gear ratios through centrifugal-force triggering and planetary gear operation. The hub automatically supports common riding stages such as starting, cruising and higher-speed city riding without requiring an electronic controller or manual shifter.

Applications

A03 is suitable for city e-bikes, commuter bicycles, urban utility e-bikes and OEM projects that need automatic 3-speed shifting, sealed construction and lower routine maintenance.

Technical Parameters
Parameter LG-N7118-3D LG-N7122-3D
Drive Type Chain Drive Belt Drive
Speed Level 3 Speed 3 Speed
Total Gear Ratio 166% 166%
Gear Ratios 1.00 / 1.29 / 1.66 1.00 / 1.29 / 1.66
Brake Type 6-Bolt Disc Brake 6-Bolt Disc Brake
Spoke Size #13 / #14 #13 / #14
O.L.D. 135 mm 135 mm
Axle Length 184 mm 184 mm
Chainline G1 49 mm 57 mm
Chainline G2 43.4 mm Not Provided
Offset 2.4 mm 2.38 mm
Thread Size JIS BC3/8-26 JIS BC3/8-26
Spoke Hole Diameter 3.2 mm 3.2 mm
Spoke Hole Number 36H 36H
Disc Brake Mounting Width 13 mm 13 mm
Color Black Black
Matching Cog Chain Sprocket / Threaded Buckle 9-Tooth Belt Cog, 6.2 mm Slot
Average Weight 1.64 kg 1.64 kg
Operating / Storage Temperature -30-80°C / -40-85°C -30-80°C / -40-85°C
Waterproof Rating IPX6 IPX6
Certification RoHS / REACH RoHS / REACH
FAQ

Q: Is A03 an electronic shifting hub? A: No. A03 is a mechanical automatic 3-speed internal gear hub.

Q: What is the difference between LG-N7118-3D and LG-N7122-3D? A: LG-N7118-3D is the chain drive version. LG-N7122-3D is the belt drive version.

Q: Can this page mention V-Brake? A: No. The A03 source document supports 6-Bolt Disc Brake.

Q: Does A03 require a manual shifter? A: No. A03 is designed as a mechanical automatic internal gear hub.

Send your message to this supplier
Send Now

A03 Automatic 3-Speed Internal Gear Hub For City E-Bikes

Ask Latest Price
Product Detail
Model Number :
A03
Technology :
CentriGear Mechanical Automatic Shifting
Brake Type :
6-Bolt Disc Brake
Application :
City E-Bikes / Commuter OEM Projects
Certification :
RoHS,REACH
Product Category :
Automatic Gear Hub
Contact Supplier
A03 Automatic 3-Speed Internal Gear Hub For City E-Bikes

Guangdong Lofandi Intelligent Technology Co.,LTD

Verified Supplier
1 Years
guangdong, guangzhou
Since 2013
Business Type :
Manufacturer
Main Products :
3 Speed Internal Gear Hub, 5 Speed Internal Gear Hub, Automatic Gear Hub
Employee Number :
>300+
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Automatic Gear Hub
MachineU China Products Sports & Entertainment Cycling Electric Bicycle Part Electric Bicycle Motor
Contact Supplier
Submit Requirement