Input Shaft 2nd Gear AZ2210040206 SINOTRUK HW SERIES GEARBOX

Product Introduction

• Structure: Precisionforged from highstrength 20CrMnTi alloy steel, with external involute gear teeth and internal splines for pressfit onto the input shaft. The gear undergoes carburizing + quenching + precision grinding, achieving surface hardness HRC 58–62and core hardness HRC 33–45, balancing wear resistance and impact toughness.

• Key Specifications:

• Material: 20CrMnTi carburized steel

• Surface treatment: Carburizing, quenching, gear grinding

• Fit type: Press-fit with internal splines

• Operating temperature: -40°C to +150°C

  • Performance: Hardened, ground tooth surface resists pitting/wear under high torque; tough core withstands shock loads during shifting; precision splines ensure zero-backlash power transfer; quiet meshing under heavy-load conditions.

Core Function

1. Torque Transmission: Transmits engine torque from input shaft to countershaft 2nd gear, delivering strong low-speed torque for heavy-load acceleration and mild climbing.

2. Power Transfer: Smoothly meshes with countershaft 2nd gear to route power through the transmission main box.

3. Wear & Fatigue Resistance: Withstands millions of shifting cycles in heavy hauling, construction, and long-haul scenarios.