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- Price :negotiated
Volvo loader L90 L120 differential spider gear , Iran
- Price :To negotiate
- order by whatsapp
The differential spider gear in the Volvo L90 and Volvo L120 is installed at the center of the differential carrier inside the axle housing. It is mounted on a hardened steel cross shaft and meshes with the side gears connected to the axle shafts. The gear is typically manufactured from chromium molybdenum alloy steel and heat treated to achieve a surface hardness of approximately 58 to 62 HRC. The gear module commonly ranges from 4 to 6 mm depending on axle design. Its primary function is to allow angular velocity difference between left and right wheels during turning. This mechanism prevents excessive torsional stress on the axle shafts and improves vehicle stability under load.
Under heavy duty operating conditions, the differential spider gear is subjected to combined shear and compressive stresses that may exceed 900 MPa. Lubrication is provided by API GL-5 gear oil with 80W-90 viscosity to minimize adhesive wear and surface fatigue. Permissible radial clearance between the cross shaft and gear bore is typically maintained below 0.15 mm. Failure is often indicated by knocking noise during cornering and metallic particles in the axle oil. Periodic inspection of backlash, lubrication quality, and carrier integrity can extend service life beyond 8000 operating hours.You can order and buy Volvo loader L90 L120 differential spider gear from Iran by contacting us through whatsaap and email.
WEBSITE: Volvo loader L90 L120 differential spider gear Iran
Grade and material of OEM volvo loader differential spider gear in Iran
In OEM differential spider gears for Volvo loaders such as Volvo L90 and Volvo L120, the common steel alloy is 20CrMnTi with controlled carbon content of 0.18–0.23%. This alloy is selected for its balance of core toughness and case hardness. Before heat treatment, the microstructure is fine pearlite with uniform distribution of carbide. Case depth after carburizing typically measures 0.8–1.2 mm. After carburizing and quenching, surface hardness reaches 58–62 HRC, while core hardness remains around 30–35 HRC. Tensile strength of the core commonly exceeds 1100 MPa, and impact energy at room temperature is typically above 15 J.
Top OEM brands like Volvo Genuine and major Tier 1 suppliers such as SKF and Timken use vacuum carburizing to reduce distortion and decarburization. Alloying elements include 0.9–1.2% manganese for hardenability, 0.15–0.25% silicon for strength, and 0.02–0.04% titanium to refine grains. Controlled induction hardening may also be applied to some productions to boost fatigue resistance to over 10^7 cycles at operating loads. Quality assurance tests include Rockwell hardness profiles every 10 mm and metallographic inspection to ensure uniform case depth before assembly.
