T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
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AZ9231320745
Trailer Parts
| Attribute | Description |
|---|---|
| Product Name | Middle Axle Main Reducer Assembly / First Drive Axle Reducer |
| Part Number | AZ9231320745 |
| Alternative Names | Middle Bridge Differential, Through-Drive Reducer, Tandem Axle Gear Set |
| Function | Primary gear reduction and torque distribution; transmits power to rear axle via through-shaft |
| Gear Ratio | 5.73:1 |
| Weight (approx.) | ~200 kg (complete assembly) |
| Housing Material | Cast Iron or Cast Steel (high-strength, vibration-damping) |
| Gear Material | High-strength alloy steel (e.g., 20CrMnTi, 22CrMo), carburized & hardened |
| Heat Treatment | Precision forging + quenching & tempering + tooth surface hardening |
| Application Axle Type | HC16 Cast Center Axle, STR (Steyr-based) two-stage reduction axle |
| Mounting Position | Middle Axle (Drives first in tandem setup) |
| Drivetrain Feature | Equipped with贯通轴 (through-shaft) for rear axle power transfer |
| Manufacturing Origin | Jinan, Shandong, China |
| Standard Compliance | GB/T Standards, CNHTC Internal Quality Control, ISO 9001 |
| Parameter | Specification |
|---|---|
| Part Number | AZ9231320745 |
| Component Type | Complete Main Reducer & Differential Assembly |
| Gear Ratio | 5.73:1 |
| Input Torque Capacity | Up to 18,000 N·m |
| Output Torque (after reduction) | ~103,000 N·m (estimated, system-dependent) |
| Gear Type | Spiral Bevel Gears (Hypoid design) |
| Bearing System | Tapered roller bearings (preloaded) |
| Lubrication Requirement | GL-5 Grade Heavy-Duty Gear Oil (80W-90 or 85W-140) |
| Oil Capacity | 10–14 liters |
| Sealing Design | Double-lip oil seals, breather plug included |
| Through-Shaft Included | Yes – allows power transfer to rear axle |
| Noise Level (at 50 km/h) | ≤ 85 dB(A) |
| Operating Temperature Range | -40°C to +150°C |
| Design Life | ≥ 800,000 km under normal conditions |
| Approvals | OEM-approved for SINOTRUK HOWO, SITRAK, Steyr series |
| Attribute | Description |
|---|---|
| Product Name | Middle Axle Main Reducer Assembly / First Drive Axle Reducer |
| Part Number | AZ9231320745 |
| Alternative Names | Middle Bridge Differential, Through-Drive Reducer, Tandem Axle Gear Set |
| Function | Primary gear reduction and torque distribution; transmits power to rear axle via through-shaft |
| Gear Ratio | 5.73:1 |
| Weight (approx.) | ~200 kg (complete assembly) |
| Housing Material | Cast Iron or Cast Steel (high-strength, vibration-damping) |
| Gear Material | High-strength alloy steel (e.g., 20CrMnTi, 22CrMo), carburized & hardened |
| Heat Treatment | Precision forging + quenching & tempering + tooth surface hardening |
| Application Axle Type | HC16 Cast Center Axle, STR (Steyr-based) two-stage reduction axle |
| Mounting Position | Middle Axle (Drives first in tandem setup) |
| Drivetrain Feature | Equipped with贯通轴 (through-shaft) for rear axle power transfer |
| Manufacturing Origin | Jinan, Shandong, China |
| Standard Compliance | GB/T Standards, CNHTC Internal Quality Control, ISO 9001 |
| Parameter | Specification |
|---|---|
| Part Number | AZ9231320745 |
| Component Type | Complete Main Reducer & Differential Assembly |
| Gear Ratio | 5.73:1 |
| Input Torque Capacity | Up to 18,000 N·m |
| Output Torque (after reduction) | ~103,000 N·m (estimated, system-dependent) |
| Gear Type | Spiral Bevel Gears (Hypoid design) |
| Bearing System | Tapered roller bearings (preloaded) |
| Lubrication Requirement | GL-5 Grade Heavy-Duty Gear Oil (80W-90 or 85W-140) |
| Oil Capacity | 10–14 liters |
| Sealing Design | Double-lip oil seals, breather plug included |
| Through-Shaft Included | Yes – allows power transfer to rear axle |
| Noise Level (at 50 km/h) | ≤ 85 dB(A) |
| Operating Temperature Range | -40°C to +150°C |
| Design Life | ≥ 800,000 km under normal conditions |
| Approvals | OEM-approved for SINOTRUK HOWO, SITRAK, Steyr series |
