Shanxi Helios Casting And Forging Industrial Co., Ltd. is one of the most experienced manufacturers and suppliers of differential case in China. The company has world-leading production equipment and strong manufacturing capabilities. Please feel free to wholesale bulk customized differential case from our factory.
Differential Case

Introduction
The differential case is a critical component in a vehicle's drivetrain system, housing and protecting the internal gears of the differential. Its primary role is to ensure smooth power transfer from the driveshaft to the wheels while accommodating differences in wheel speed during turns. Its material (cast iron) provides unique advantages for demanding applications.
Functions
|
Housing and Protecting Internal Components |
Encloses differential gears (ring gear, pinion gear, spider gears, and side gears) to shield them from dirt, debris, and moisture and to prevent damage from external impacts or vibrations. |
|
Torque Transfer and Distribution |
Transmits torque from the driveshaft (via the pinion gear) to the ring gear, which is bolted directly to the differential case. Distributes power evenly to the axle shafts (via the spider and side gears), allowing wheels to rotate at different speeds during turns. |
|
Supporting Gear Alignment |
Maintains precise alignment of the ring-and-pinion gears to ensure smooth meshing and reduce wear. Provides mounting points for bearings that support the rotating components. |
|
Handling Axle Loads |
Withstands torsional forces and axial loads generated by the engine, transmission, and wheels. |
|
Mounting for Differential Components |
Secures the differential carrier assembly to the vehicle's axle housing or chassis. Provides attachment points for axle shafts, bearings, and seals. |
Application
The differential case is mainly used for heavy-duty commercial vehicles, Off-Road and 4x4 Vehicles, High-Performance and Modified Vehicles, Agricultural and Forestry Machinery, Industrial Machinery, Legacy and Vintage Vehicles.


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