Az2210030215 Sinotruk Howo Gearbox Countershaft Right Spare Parts

Sinotruk HOWO Transmission Countershaft (Layshaft) – Part No. AZ2210030215

Product Description:
The AZ2210030215 is a genuine countershaft (layshaft) designed for heavy-duty Sinotruk HOWO truck transmissions. This critical rotating component forms the core of the gear train within the gearbox, working in constant mesh with both the input shaft gears and the output shaft gears.

Key Features & Function:
Core Transmission Component: Serves as an intermediate shaft essential for transferring engine torque from the input shaft to the output shaft via selected gear pairs.
Multiple Gear Mounting: Features precision-machined splines or journals where multiple constant-mesh gear wheels are rigidly mounted.
Torque Transfer & Gear Reduction/Increase: Enables the selection of different gear ratios by engaging different pairs of gears via the synchronizer sleeves and collars on the main shaft.
Forged Steel Construction: Manufactured from high-strength alloy steel, typically through forging, to withstand significant torsional stress, shear forces, and high-cycle fatigue inherent in heavy-duty truck operations.
Precision Machining: Gear teeth and bearing/journal surfaces are precision-ground and hardened (often through processes like carburizing or induction hardening) to ensure durability, smooth meshing, quiet operation, and resistance to wear and pitting.
Critical Bearing Surfaces: Includes precisely machined surfaces at each end for mounting high-capacity bearings (needle roller, tapered roller, or ball bearings), allowing smooth rotation within the gearbox housing.
Genuine Sinotruk Part: Engineered to exact Sinotruk specifications for optimal fit, performance, reliability, and longevity within designated HOWO transmission models.

Typical Application:
This countershaft is a replacement part for various models of Sinotruk HOWO trucks, commonly found in transmissions such as the HW series (e.g., HW19710, HW19712, HW20716, HW13710 variants) and possibly others. Always verify compatibility specifically for the transmission model and truck VIN.