Main Reducer Rear axe

Description：High-quality AZ9112320143 Steyr Rear Axle Main Reducer, gear ratio 5.73. Premium alloy steel, precise machining, and durable design for Steyr and heavy-duty trucks. OEM standard.

Product model：AZ9112320143

Category ：Transmission System

Update time：2025-10-22

Product Description

The AZ9112320143 Rear Axle Main Reducer is a key component of the Steyr heavy truck rear axle assembly.It reduces the engine output speed by a fixed ratio of 5.73, transmitting torque to the wheels to ensure smooth start, acceleration, and optimal load traction.Manufactured from high-strength alloy steel with precision machining and heat treatment, this main reducer provides high load capacity, low noise, and long service life.It is widely used in Steyr heavy trucks, construction vehicles, and tractor trucks, suitable for highway transport, mining, and heavy-duty applications.

Product Features

High Load Capacity: Premium alloy steel gears designed for heavy-duty operation.

Precision Gear Processing: Smooth tooth surfaces and accurate meshing for low noise.

Durable & Wear-Resistant: Carburized and hardened gears ensure long service life.

Accurate Gear Ratio: Fixed 5.73 ratio for optimal vehicle power and fuel efficiency.

Modular Design: Easy assembly, disassembly, and maintenance.

Technical Specifications

Item	Description
Part Number	AZ9112320143
Product Name	Main Reducer Rear Axle
Applicable Models	Steyr / HOWO Series Heavy Trucks
Rear Axle Type	Single-stage or Dual-stage Reduction
Gear Ratio	5.73
Material	High-strength Alloy Steel
Heat Treatment	Carburized & Hardened
Gear Accuracy	Grade 6–7 (per standard)
Bearing Type	Rolling Bearings / Adjustable Thrust Bearings
Mounting Method	Flange or Bolt Fixation
Function	Reduces speed and transmits power to wheels
Operating Environment	Heavy Load / Continuous Operation
Certification	ISO9001 / TS16949 / OEM Standard
Warranty	12 Months (under normal use)