Auxiliary Drive Gear

Description：High-strength auxiliary drive gear for heavy truck transmissions. Transfers torque to the auxiliary section of FAST, HW19710, and EATON gearboxes. Precision-machined, heat-treated, and OEM-compatible for maximum performance and durability.

Product model：

Category ：Transmission System

Update time：2025-07-03

Product Overview

The auxiliary drive gear is a key component within the auxiliary section of a heavy-duty truck transmission system. It serves as the primary power-transmitting gear that connects the main transmission to the auxiliary range section (low/high). This gear helps transfer torque smoothly, enabling a broader range of gear ratios, optimized traction, and better fuel efficiency in heavy-load or off-road conditions.

Engineered with high-precision machining and heat treatment, our auxiliary drive gears are compatible with popular gearboxes such as FAST 12JSD, HW19710, and EATON, making them suitable for SINOTRUK HOWO, SHACMAN, FAW, and other commercial vehicles.

Key Features

Forged from high-quality alloy steel for maximum strength
Precision-ground teeth for smooth meshing and minimal noise
Carburized and quenched for excellent wear resistance and durability
Supports OEM part numbers and various gear ratios
Compatible with both split and integrated transmission systems
Fully tested for balance, hardness, and gear engagement performance

Technical Specifications

Parameter	Specification
Material	20CrMnTi / 8620 alloy steel
Heat Treatment	Carburized & hardened (HRC 58–62)
Gear Type	Spur / Helical (based on gearbox type)
Module & Tooth Count	Customizable (e.g., M4.5, 31T / 36T etc.)
Application Location	Auxiliary gearbox section (input side)
Compatible Transmissions	FAST 12JSD180/200, HW19710, EATON RT, ZF 16S etc.
Finish	Polished / Black phosphate / Gear-ground
Operating Conditions	High torque, lubricated environment