Avetlink AK Differential Gearbox: Reliable Performance for Cargo Tricycles
Early gear wear, oil leaks, noise, and vibration can lead to frequent repairs and delayed deliveries.
The Avetlink AK differential gearbox offers 14T and 16T gear configurations, with one-piece and split-body housing options.
Forged chromium-molybdenum alloy gears undergo carburizing and quenching to improve durability. Double oil seals and a labyrinth sealing structure help prevent leakage and protect internal components.
Reported vehicle testing showed that a vehicle with a rated payload of 1.5 tons, using a matched motor, completed 30 km of continuous uphill driving without heat-related performance loss.
A logistics fleet also reported an 82% reduction in differential failures and a 45% improvement in cornering stability after adopting the system.
Key Features
- Hardened gears: Reported wear resistance is 3.2 times the stated reference benchmark.
- Improved sealing: Double oil seals and labyrinth seals provide a reported 76% improvement in leak-prevention reliability.
- Drivetrain compatibility: Designed for integration with a suitable motor and correctly matched electric tricycle controller.

Maintenance Guidelines
1. First oil change: Replace the gear oil after the first 500 km.
2. Monthly bolt inspection: Check the designated mounting bolts, applying the specified 28 N·m tightening torque to the bolts covered by that requirement.
3. After water exposure: Remove dirt and debris around the drive-shaft connection and inspect for leakage or contamination.
Frequently Asked Questions
Q1: Is the AK gearbox suitable for mountainous roads?
The reinforced planetary gear set is designed to withstand impacts and demanding road conditions. Select the configuration according to the vehicle’s load and operating requirements.

Q2: Do I need to replace the entire rear axle?
On compatible assemblies, the split-body design allows the differential to be replaced separately. The reported reduction in maintenance costs is 60%.

Q3: How often should the gear oil be changed?
After the initial 500 km oil change, the stated replacement intervals are:
- Every 8,000 km under standard operating conditions.
- Every 4,000 km under heavy-load conditions.
Use the lubricant specified for your AK configuration.

Q4: How can I identify abnormal gear wear?
Wear indicator pins provide an early indication of changes in gear clearance. If unusual noise or vibration develops, inspect the gear clearance, bearings, and lubrication.
Feedback from a Yunnan Freight Fleet
A freight fleet in Yunnan using the AK 16T one-piece configuration reported:
- RMB 43,000 lower total maintenance costs over three years.
- A 91% reduction in rainy-season failures.
The configuration is used in building-material transport applications where heavy-load reliability and smooth cornering are important.
Contact Avetlink with your vehicle specifications, load requirements, and mounting dimensions to discuss a suitable AK differential configuration.

Item	Value
Number of Teeth	14 teeth or 16 teeth
Installation Method	One-piece or split body
Shift Control	Shift gears or Unchanged file
Color	Customizable
Place of Origin	China