Free wheel introduction
The original four-wheel-drive model was originally designed to meet the needs of normal road conditions. The automatic hub is an important component used in time-sharing four-wheel-drive vehicles. There are two types of joint hub systems, one for Manual type, the other is automatic type. Auto-locking—The free hub automatically engages the hub with the rotation of the drive shaft. When the cam disc is activated, the sliding gear slides along the drive gear, completing the free lock-free operation between the drive shaft and the hub. Thanks to the action of the automatic hub, the front wheel is free to rotate, while the front drive shaft, differential gear and drive shaft remain stable, which reduces unnecessary wear between these components and saves fuel.