Ball Joint

A ball joint is a critical component of a car’s suspension system. It works similarly to a human hip or shoulder joint, allowing movement in multiple directions. Specifically, it connects the control arms to the steering knuckles, enabling the front wheels to move up and down (for absorbing road bumps) while also turning left and right (for steering).

• Connects suspension to the wheels: Links the control arm and steering knuckle.
• Enables steering and suspension movement: Allows smooth rotation and vertical motion of the wheel.
• Supports the vehicle’s weight and absorbs shocks from the road.

Ball joints allow movement in the suspension system while maintaining wheel alignment. Here's a summary of the common types:

• Located at the top of the suspension, connects the steering knuckle to the control arm

• Positioned at the bottom, handles more weight and stress, connects the steering knuckle to the lower control arm.

• Features a grease fitting for lubrication, ensuring smooth movement and durability.

• Sealed and pre-lubricated, requiring little maintenance.

• Pressed into the control arm or housing, common in older vehicles.

• Secured with bolts, easy to install and replace, commonly found in modern vehicles.

• Built for trucks and SUVs to handle higher stress and wear.