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Suspension and steering components. Reliability and durability

Suspension and steering components are key elements of a vehicle’s chassis, operating under some of the most demanding conditions — continuous dynamic loads combined with aggressive exposure to moisture and dust — while ensuring the required suspension kinematics and vehicle handling. Therefore, NGN premium suspension and steering components are subject to some of the most stringent requirements for reliability and durability.

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Extended service life

Minimizing friction and wear within the joint is a complex engineering challenge. To address this, NGN engineers have implemented five solutions: I) Ball studs (1) are made from upgraded chromium-molybdenum structural steel 42CrMo, offering high strength and impact toughness;  II) Surface hardening to 30–36 HRC;  III) Polished spherical working surface (2) with a roughness not exceeding 0.4 μm;  IV) Japanese synthetic, wear-resistant, water-repellent grease — Sumico Lubricant (Japan);  V) Bearing (3) made from POM-500M polymer, combining high stiffness, wear resistance, and dimensional stability. These features ensure excellent wear resistance of NGN joints, eliminate play, and provide up to three times longer service life.

Absolute protection

To protect joint assemblies from moisture and dust, NGN uses high-strength dust boots (4) made of CR+ chloroprene rubber with special modifiers, ensuring the required elasticity, wear resistance, and durability across a wide temperature range from -50°C to +120°C. NGN dust boots are securely fixed to the ball stud and housing using spring rings (5) made of cold-drawn steel wire (EN10270-1 standard) with an anti-corrosion coating.

Corrosion protection

NGN suspension arms feature one of the most effective corrosion protection solutions — electrophoretic coating (E-coating). For ball joints, stabilizer links, tie rod ends, and steering rods, a zinc-nickel protective coating (6) is used. A distinctive feature of NGN is the black zinc-nickel coating applied to ball studs. For both types of coatings, salt spray testing in accordance with ASTM B117 demonstrates one of the best results in the industry — over 400 hours.