Ground vs. Unground Gears: What's Best for Low-Speed EV Rear Axles?

In rear axle systems for golf carts, low-speed four-wheelers, sightseeing vehicles, and other off-road electric vehicles,
gear quality significantly affects driving comfort, durability, and noise level.

🔧 Ground Gears 

• Precisely ground after heat treatment

• Lower gear noise (≈71dB), smoother operation

• Ideal for passenger applications like golf carts and tourist shuttles

• Enhanced gear life and surface finish, minimizing maintenance

⚙️ Unground Gears 

• Lower manufacturing cost

• Rougher surface, higher noise and wear

• Suitable for basic utility EVs with minimal comfort requirement

💡 Which One to Choose?
If your priority is quiet, smooth, and reliable performance, especially for people-carrying LSEVs, ground gears are the clear choice despite slightly higher cost.
For purely utilitarian or off-road applications with lower comfort demands, unground gears remain a valid economical option.