Bolt On Lower Ball Joint

The main body is made from high-quality alloy steel meeting international standards. The bolt-on structure is optimized for maximum connection security and durability. The main body has a tensile strength over 850 MPa, providing excellent impact resistance.

The bolts themselves are made from high-strength alloy steel and heat-treated for extra toughness, achieving a tensile strength over 1000 MPa. Precision threads ensure secure locking, preventing loosening from vibrations. The main body is precision-forged, producing a uniform internal structure. Forged blanks undergo flaw detection to ensure no internal defects. Dimensional consistency is strictly controlled to provide a reliable foundation for finishing.

The ball surface undergoes precision grinding and is paired with specialized grease for smooth rotation, low wear, and long service life. Surface roughness is controlled to Ra 0.2 or less.

The surface receives phosphating plus powder coating for dual corrosion protection. This effectively isolates air, moisture, and contaminants, preventing rust. Salt spray testing shows 72 hours without red rust.

The bolt-on design ensures a secure connection between the ball joint, lower control arm, and steering link. It resists loosening from long-term driving and road bumps. On a vibration test rig simulating extreme road conditions, after 100 hours of continuous vibration, bolt torque loss remained under 5%.

This bolt-on lower ball joint passed rigorous tests:

Locking force test: 2× rated load with no loosening or displacement

Fatigue test: 2.5 million cycles with clearance change under 0.12 mm

Vibration test: 100 hours continuous vibration, torque loss under 5%, no loosening

Reliable, secure, and durable-this bolt-on lower ball joint ensures peace of mind on every road.