Middle Axle Differential Assy 199014320166 Sinotruk

Product Introduction

This middle axle differential assembly is a heavy-duty, fully integrated unit designed for multi-axle heavy-duty trucks. It is constructed from high-strength alloy steel and ductile cast iron, featuring precision-forged gears, a robust differential case, and integrated splined input/output shafts. The assembly includes all necessary internal components: differential side gears, pinion gears, cross shaft, and pre-adjusted bearings, eliminating the need for complex on-site assembly. The gear teeth are precision-cut and carburized for exceptional wear resistance, while the case is engineered to withstand the high torque loads and dynamic stresses of multi-axle operation. Precision-machined mounting surfaces and oil passages ensure proper lubrication and alignment, making it suitable for the demanding conditions of long-haul and heavy-load transportation.

Core Function

• Distributes torque from the transmission to both the middle and rear axles, enabling effective power delivery in multi-axle drive configurations.

• Allows the middle and rear axles to rotate at different speeds, compensating for differences in tire wear and road conditions, and preventing drivetrain binding.

• Maintains precise gear meshing and bearing preload, ensuring efficient power transmission and minimizing noise, vibration, and harshness (NVH).

• Serves as a direct, pre-assembled OE replacement, reducing installation time and ensuring consistent performance within the multi-axle drive