Part Number: FDC3193200030002201
Product Name: HDZ300 TGX Series Single-Reduction Main Reducer Assembly (Differential Carrier / Complete Inter-Axle Differential Assembly)
Manufacturer/System: Produced by HAN DE AXLE (Weichai-SHACMAN Joint Venture) and Forward OEM Genuine Supply Chain Network. Fully matched with SHACMAN Delong full-series tractors and commercial cargo trucks
1. Part Number & Coding Rules Decoded
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FDC31932: Universal prefix for HDZ300 single-reduction driving axles.
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0003: 300-Series standard housing carrier configuration with serrated-face input flange.
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0002201: Unique coding designated for specific gear ratio, differential lock, and factory assembly version.
2. Core Technical Specifications & Parameters
| Parameter Item | Technical Specifications & Design Features |
| Applicable Axle Model |
HAN DE HDZ300 13-Ton Single-Reduction Drive Axle (TGX Lightweight High-Speed Axle Series) |
| Structural Design | Single-reduction spiral bevel gear system, equipped with standard Inter-Axle Differential Lock. |
| Net Weight | Approx. 190 KG (Standard weight for this high-strength series). |
| Input Flange Spec | 180-Serrated Face Teeth , engineered for seamless fitment with FAST Gearbox and Weichai powertrain drive shafts. |
| Lubrication Type | Advanced Splash + Pressure Composite Lubrication (Optimized for long-drain gear oils). |
| Installation Fitment |
Standard HDZ300 rear axle housing bolt pattern. Direct drop-in replacement with zero modifications required to the axle housing |
3. Gear Ratio Matrix & Application Scenarios
Under the same FDC319320003 production segment, different gear ratios target distinct logistical operations:
| OEM Part Number | Gear Ratio (i) | Recommended Application Scenarios |
| FDC3193200030000015 | 1.5 | Standard-load, high-speed interstate highway line-haul tractors. |
| FDC3193200030002406 | 1.933 | Standard-load "Green Channel" agricultural logistics, express courier, and fast e-commerce fleets. |
| FDC3193200030002201 | 4.111 | Heavy-duty tipping, construction sand/gravel hauling, coal logistics, and mountainous terrains. |
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