
Volvo L90 and L120 differential housing , Iran
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The differential housing of Volvo L90 and L120 loaders is a critical component of the powertrain, designed to protect the internal gears and axle shafts. It is manufactured from alloy steel with precise heat treatment to achieve high fatigue resistance against torsional loads and repeated impacts. Its dimensions are optimized through finite element analysis, with wall thicknesses ranging from 12 to 22 mm to ensure a minimum allowable stress of 350 MPa. The gearbox flange thickness is 18 mm, and the internal bore for the bearing seats measures 120 mm, derived from durability tests exceeding 6,000 operational hours under heavy-duty conditions.
In operation, the Volvo differential housing transfers engine torque to the wheels with minimal energy loss. Its geometry maintains the axle shaft centerline under load and can withstand a torque of 8,600 Nm continuously. The mating surfaces are micro-machined to prevent oil leakage, maintaining lubrication efficiency at operating temperatures of 80–110°C. Reinforced 60 mm axle shafts and tapered roller bearings conforming to ISO 492 standards ensure long-term durability and stable performance in harsh construction environments.You can order and buy Volvo L90 and L120 differential housing from Iran by contacting us through whatsaap and email.
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Hardness and strength of Volvo loader differential housing
The final drive system of the Volvo L90, L120, and BM loaders utilizes a specific spiral bevel gear set known as the crown wheel and pinion. For the Volvo BM L90C and L120C models, the differential side gear assemblies carry Volvo OE reference numbers 17415136 and 1524588 . These hardened steel components are engineered to exacting tolerances to manage high torque loads and ensure smooth power transfer to the wheels .
The ring gear and pinion are matched sets designed for optimal tooth contact patterns and quiet operation. Technical specifications for these drivetrain components are critical for service replacements . These parts are common across multiple Volvo articulated hauler models, indicating a shared engineering platform . Precise backlash and preload settings are mandatory during installation to guarantee long service life.






