Silver Differential Box

Frequent and hard-to-solve differential gearbox failures?

In the field of electric freight tricycles, the differential gearbox, as a core component of power transmission, directly affects the operational efficiency of the entire vehicle. Currently, the industry commonly faces technical issues such as early gear wear, seal failure and oil leakage, as well as abnormal noises and vibrations. These problems not only increase maintenance frequency but also lead to reduced transportation timeliness and increased operational costs.

To address this technical challenge, we have developed a new generation of differential gearbox systems. The product offers two gear specifications, 14 teeth and 16 teeth, and adopts a modular design architecture of integral and split types. By combining chromium-molybdenum alloy forged gears with carburizing and quenching processes, and incorporating a labyrinth-type multi-seal structure, the durability of the product is significantly enhanced. Field tests show that when matched with an Electric Motor, the loading vehicle with a rated load of 1.5 tons did not experience thermal fade during continuous 30-kilometer uphill driving. After a certain logistics company's Electric Cargo Tricycle fleet adopted this solution, the differential gearbox failure rate decreased by 82%, and the stability during cornering improved by 45%.

Core technological innovations

• Adopting carburizing and quenching gear processing, the wear resistance is 3.2 times that of the national standard
• Combining double oil seals with labyrinth-type seals, the reliability of preventing oil leakage is increased by 76%
• Output signals are perfectly compatible with mainstream Electric Tricycle Controllers

Maintenance guidelines

① Gear lubricating oil should be replaced after the initial 500 kilometers of operation ② Fixed bolts should be checked at a torque of 28 N·m monthly ③ After driving through water, impurities at the transmission shaft connection should be cleaned. 

Technical Q&A

Q: How well does it adapt to mountainous road conditions?

A: The reinforced planetary gear set is specially designed for rough terrain and exceeds the standard requirements in terms of shock resistance.

Q: Is it necessary to replace the rear axle assembly?

A: The split structure supports the separate replacement of the differential, reducing maintenance costs by 60%.

Q: What is the lubricating oil replacement cycle?

A: Under standard conditions, it should be replaced every 8,000 kilometers, and under heavy load conditions, it should be shortened to every 4,000 kilometers.

Q: How to determine abnormal sounds?

A: It is equipped with wear indicator pins that can provide early warnings of abnormal gear clearance.

Field test data from a freight fleet in Yunnan shows that vehicles using a 16-tooth integrated differential have reduced their comprehensive maintenance costs by 43,000 yuan over a three-year period and have seen a 91% decrease in failure rates during the rainy season. Currently, this solution has been widely applied in the Electric Cargo Tricycle in the building materials transportation sector, proving its successful achievement of dual technical breakthroughs in "heavy-load reliability" and "cornering stability".